Make href prop optional in SubHeaderLinkItem and update StructurePreview to remove default href values

Add SiteSectionList to StructurePreviewVariantSelector for improved section display
Add social account links to StructurePreviewMoreMenu component
2026-09-16 15:45:13 +00:00 · 2026-06-24 20:23:30 +02:00 · 2026-06-24 20:14:18 +02:00 · 2026-06-24 20:11:48 +02:00 · 2026-06-24 19:56:36 +02:00 · 2026-06-24 10:47:51 +02:00
317 changed files with 18888 additions and 2893 deletions
@@ -1,5 +0,0 @@
---
-"gitbook": minor
---
-
-Add "Content-Signal" to "robots.txt"
@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Support an optional `goal` query parameter on the markdown ask interface (`?ask=…&goal=…`), letting agents describe the broader end goal they are working towards so the answer can be steered towards it.
@@ -1,5 +0,0 @@
---
-"gitbook": minor
---
-
-Support variant selector in hidden section
@@ -1,5 +0,0 @@
---
-"gitbook": patch
---
-
-Fix embeddable search links
@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix grouped top-nav section dropdowns rendering empty when the site is embedded in an iframe (visitor-auth embeds, editor preview) or shown in the embeddable view. The dropdown viewport is composited and animated, and a clipped composited layer fails to rasterize its text in Chromium when painted inside a sub compositing root; the rounded-corner clipping is now done on an inner wrapper so the viewport itself is no longer clipped.
@@ -0,0 +1,12 @@
+{
+    "version": "0.0.1",
+    "configurations": [
+        {
+            "name": "🚀 Dev server",
+            "runtimeExecutable": "sh",
+            "runtimeArgs": ["-c", "bun install && bun dev"],
+            "port": 3000,
+            "autoPort": false
+        }
+    ]
+}
@@ -55,6 +55,7 @@ runs:
            GITBOOK_OAUTH_SERVER_URL: ${{ inputs.opItem }}/GITBOOK_OAUTH_SERVER_URL
            GITBOOK_PREVIEW_BASE_URL: ${{ inputs.opItem }}/GITBOOK_PREVIEW_BASE_URL
            GITBOOK_INTEGRATIONS_HOST: ${{ inputs.opItem }}/GITBOOK_INTEGRATIONS_HOST
+            GITBOOK_INTEGRATIONS_CONTENT_HOST: ${{ inputs.opItem }}/GITBOOK_INTEGRATIONS_CONTENT_HOST
            GITBOOK_IMAGE_RESIZE_SIGNING_KEY: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_SIGNING_KEY
            GITBOOK_IMAGE_RESIZE_URL: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_URL
            GITBOOK_IMAGE_RESIZE_MODE: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_MODE
@@ -57,6 +57,7 @@ runs:
            GITBOOK_OAUTH_SERVER_URL: ${{ inputs.opItem }}/GITBOOK_OAUTH_SERVER_URL
            GITBOOK_PREVIEW_BASE_URL: ${{ inputs.opItem }}/GITBOOK_PREVIEW_BASE_URL
            GITBOOK_INTEGRATIONS_HOST: ${{ inputs.opItem }}/GITBOOK_INTEGRATIONS_HOST
+            GITBOOK_INTEGRATIONS_CONTENT_HOST: ${{ inputs.opItem }}/GITBOOK_INTEGRATIONS_CONTENT_HOST
            GITBOOK_IMAGE_RESIZE_SIGNING_KEY: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_SIGNING_KEY
            GITBOOK_IMAGE_RESIZE_URL: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_URL
            GITBOOK_IMAGE_RESIZE_MODE: ${{ inputs.opItem }}/GITBOOK_IMAGE_RESIZE_MODE
@@ -15,6 +15,10 @@ jobs:
            id-token: write
            pull-requests: write
            contents: write
+        env:
+            # The repo is managed by Bun, but publishing uses npm for provenance.
+            # Keep Corepack from rejecting packageManager: bun@... when npm runs.
+            COREPACK_ENABLE_PROJECT_SPEC: 0
        steps:
            - name: Checkout Repo
              uses: actions/checkout@v3
@@ -1,12 +1,13 @@
 {
  "lockfileVersion": 1,
+  "configVersion": 0,
  "workspaces": {
    "": {
      "name": "gitbook",
      "devDependencies": {
        "@biomejs/biome": "^1.9.4",
-        "@changesets/cli": "^2.30.0",
-        "turbo": "^2.9.6",
+        "@changesets/cli": "^2.31.0",
+        "turbo": "^2.9.18",
        "vercel": "50.37.3",
      },
    },
@@ -47,7 +48,7 @@
    },
    "packages/embed": {
      "name": "@gitbook/embed",
-      "version": "0.5.0",
+      "version": "0.5.1",
      "dependencies": {
        "@gitbook/api": "catalog:",
        "@gitbook/icons": "workspace:",
@@ -73,7 +74,7 @@
    },
    "packages/expr": {
      "name": "@gitbook/expr",
-      "version": "1.2.5",
+      "version": "1.3.0",
      "dependencies": {
        "acorn": "^8.15.0",
        "acorn-loose": "^8.5.2",
@@ -108,7 +109,7 @@
    },
    "packages/gitbook": {
      "name": "gitbook",
-      "version": "0.25.1",
+      "version": "0.27.1",
      "dependencies": {
        "@cloudflare/workers-types": "^4.20251011.0",
        "@gitbook/api": "catalog:",
@@ -126,8 +127,8 @@
        "@gitbook/react-openapi": "workspace:*",
        "@mermaid-js/mermaid-zenuml": "^0.2.2",
        "@modelcontextprotocol/sdk": "1.17.5",
-        "@opennextjs/aws": "3.10.1",
-        "@opennextjs/cloudflare": "1.19.1",
+        "@opennextjs/aws": "4.0.1",
+        "@opennextjs/cloudflare": "1.19.8",
        "@panzoom/panzoom": "^4.6.1",
        "@radix-ui/react-checkbox": "^1.0.4",
        "@radix-ui/react-collapsible": "^1.1.12",
@@ -139,7 +140,7 @@
        "@sindresorhus/fnv1a": "^3.1.0",
        "@tailwindcss/container-queries": "^0.1.1",
        "@tusbar/cache-control": "^1.0.2",
-        "@vercel/agent-readability": "^0.2.1",
+        "@vercel/agent-readability": "^0.4.0",
        "ai": "^4.2.2",
        "assert-never": "catalog:",
        "bidc": "catalog:",
@@ -147,6 +148,7 @@
        "direction": "^2.0.1",
        "event-iterator": "^2.0.0",
        "feed": "^5.1.0",
+        "flexsearch": "^0.8.212",
        "image-size": "^2.0.2",
        "js-cookie": "^3.0.5",
        "jsontoxml": "^1.0.1",
@@ -158,19 +160,22 @@
        "mdast-util-gfm": "^3.1.0",
        "mdast-util-to-markdown": "^2.1.2",
        "memoizee": "^0.4.17",
-        "mermaid": "^11.12.3",
+        "mermaid": "^11.14.0",
        "micromark-extension-frontmatter": "^2.0.0",
        "micromark-extension-gfm": "^3.0.0",
        "motion": "^12.23.24",
-        "next": "^16.2.3",
+        "negotiator": "^1.0.0",
+        "next": "^16.2.6",
        "next-themes": "^0.4.6",
        "nuqs": "^2.2.3",
        "object-hash": "^3.0.0",
        "object-identity": "^0.1.2",
        "openapi-types": "^12.1.3",
        "p-map": "^7.0.3",
+        "p-retry": "^8.0.0",
        "quick-lru": "^7.0.1",
        "react": "19.2.4",
+        "react-aria": "^3.44.0",
        "react-dom": "19.2.4",
        "react-hotkeys-hook": "^4.4.1",
        "rehype-raw": "^7.0.0",
@@ -184,6 +189,7 @@
        "shiki": "^3.21.0",
        "tailwind-merge": "^2.2.0",
        "tailwind-shades": "^1.1.2",
+        "tldts": "^7.0.30",
        "unified": "^11.0.5",
        "unist-util-remove": "^4.0.0",
        "unist-util-visit": "^5.0.0",
@@ -226,7 +232,7 @@
    },
    "packages/icons": {
      "name": "@gitbook/icons",
-      "version": "0.4.6",
+      "version": "0.5.0",
      "bin": {
        "gitbook-icons": "./bin/gitbook-icons.js",
      },
@@ -264,7 +270,7 @@
    },
    "packages/react-contentkit": {
      "name": "@gitbook/react-contentkit",
-      "version": "0.7.15",
+      "version": "0.7.16",
      "dependencies": {
        "@gitbook/api": "catalog:",
        "@gitbook/icons": "workspace:*",
@@ -306,7 +312,7 @@
    },
    "packages/react-openapi": {
      "name": "@gitbook/react-openapi",
-      "version": "1.5.12",
+      "version": "1.5.14",
      "dependencies": {
        "@gitbook/expr": "workspace:*",
        "@gitbook/openapi-parser": "workspace:*",
@@ -341,7 +347,7 @@
  },
  "patchedDependencies": {
    "decode-named-character-reference@1.0.2": "patches/decode-named-character-reference@1.0.2.patch",
-    "next@16.2.3": "patches/next@16.2.3.patch",
+    "next@16.2.6": "patches/next@16.2.6.patch",
  },
  "overrides": {
    "@codemirror/state": "6.4.1",
@@ -354,7 +360,7 @@
    "react-dom": "catalog:",
  },
  "catalog": {
-    "@gitbook/api": "0.177.0",
+    "@gitbook/api": "0.185.0",
    "@scalar/api-client-react": "^1.3.46",
    "@tsconfig/node20": "^20.1.6",
    "@tsconfig/strictest": "^2.0.6",
@@ -369,6 +375,7 @@
    "tsdown": "^0.15.6",
    "typescript": "^5.5.3",
    "usehooks-ts": "^3.1.1",
+    "vercel": "^50.26.1",
  },
  "packages": {
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@@ -549,21 +556,21 @@

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    "@gitbook/browser-types": ["@gitbook/browser-types@workspace:packages/browser-types"],

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@@ -2525,6 +2538,8 @@

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@@ -2739,7 +2754,7 @@

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@@ -2847,7 +2862,7 @@

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+    "next": ["next@16.2.6", "", { "dependencies": { "@next/env": "16.2.6", "@swc/helpers": "0.5.15", "baseline-browser-mapping": "^2.9.19", "caniuse-lite": "^1.0.30001579", "postcss": "8.4.31", "styled-jsx": "5.1.6" }, "optionalDependencies": { "@next/swc-darwin-arm64": "16.2.6", "@next/swc-darwin-x64": "16.2.6", "@next/swc-linux-arm64-gnu": "16.2.6", "@next/swc-linux-arm64-musl": "16.2.6", "@next/swc-linux-x64-gnu": "16.2.6", "@next/swc-linux-x64-musl": "16.2.6", "@next/swc-win32-arm64-msvc": "16.2.6", "@next/swc-win32-x64-msvc": "16.2.6", "sharp": "^0.34.5" }, "peerDependencies": { "@opentelemetry/api": "^1.1.0", "@playwright/test": "^1.51.1", "babel-plugin-react-compiler": "*", "react": "^18.2.0 || 19.0.0-rc-de68d2f4-20241204 || ^19.0.0", "react-dom": "^18.2.0 || 19.0.0-rc-de68d2f4-20241204 || ^19.0.0", "sass": "^1.3.0" }, "optionalPeers": ["@opentelemetry/api", "@playwright/test", "babel-plugin-react-compiler", "sass"], "bin": { "next": "dist/bin/next" } }, "sha512-qOVgKJg1+At15NpeUP+eJgCHvTCgXsogweq87Ri/Ix7PkqQHg4sdaXmSFqKlgaIXE4kW0g25LE68W87UANlHtw=="],

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@@ -2915,6 +2930,8 @@

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+    "p-retry": ["p-retry@8.0.0", "", { "dependencies": { "is-network-error": "^1.3.0" } }, "sha512-kFVqH1HxOHp8LupNsOys7bSV09VYTRLxarH/mokO4Rqhk6wGi70E0jh4VzvVGXfEVNggHoHLAMWsQqHyU1Ey9A=="],
+
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@@ -2987,7 +3004,7 @@

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-    "postcss": ["postcss@8.5.6", "", { "dependencies": { "nanoid": "^3.3.11", "picocolors": "^1.1.1", "source-map-js": "^1.2.1" } }, "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg=="],
+    "postcss": ["postcss@8.5.10", "", { "dependencies": { "nanoid": "^3.3.11", "picocolors": "^1.1.1", "source-map-js": "^1.2.1" } }, "sha512-pMMHxBOZKFU6HgAZ4eyGnwXF/EvPGGqUr0MnZ5+99485wwW41kW91A4LOGxSHhgugZmSChL5AlElNdwlNgcnLQ=="],

    "postcss-import": ["postcss-import@15.1.0", "", { "dependencies": { "postcss-value-parser": "^4.0.0", "read-cache": "^1.0.0", "resolve": "^1.1.7" }, "peerDependencies": { "postcss": "^8.0.0" } }, "sha512-hpr+J05B2FVYUAXHeK1YyI267J/dDDhMU6B6civm8hSY1jYJnBXxzKDKDswzJmtLHryrjhnDjqqp/49t8FALew=="],

@@ -3301,6 +3318,10 @@

    "tinyglobby": ["tinyglobby@0.2.15", "", { "dependencies": { "fdir": "^6.5.0", "picomatch": "^4.0.3" } }, "sha512-j2Zq4NyQYG5XMST4cbs02Ak8iJUdxRM0XI5QyxXuZOzKOINmWurp3smXu3y5wDcJrptwpSjgXHzIQxR0omXljQ=="],

+    "tldts": ["tldts@7.0.30", "", { "dependencies": { "tldts-core": "^7.0.30" }, "bin": { "tldts": "bin/cli.js" } }, "sha512-ELrFxuqsDdHUwoh0XxDbxuLD3Wnz49Z57IFvTtvWy1hJdcMZjXLIuonjilCiWHlT2GbE4Wlv1wKVTzDFnXH1aw=="],
+
+    "tldts-core": ["tldts-core@7.0.30", "", {}, "sha512-uiHN8PIB1VmWyS98eZYja4xzlYqeFZVjb4OuYlJQnZAuJhMw4PbKQOKgHKhBdJR3FE/t5mUQ1Kd80++B+qhD1Q=="],
+
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@@ -3335,7 +3356,7 @@

    "tsx": ["tsx@4.21.0", "", { "dependencies": { "esbuild": "~0.27.0", "get-tsconfig": "^4.7.5" }, "optionalDependencies": { "fsevents": "~2.3.3" }, "bin": { "tsx": "dist/cli.mjs" } }, "sha512-5C1sg4USs1lfG0GFb2RLXsdpXqBSEhAaA/0kPL01wxzpMqLILNxIxIOKiILz+cdg/pLnOUxFYOR5yhHU666wbw=="],

-    "turbo": ["turbo@2.9.6", "", { "optionalDependencies": { "@turbo/darwin-64": "2.9.6", "@turbo/darwin-arm64": "2.9.6", "@turbo/linux-64": "2.9.6", "@turbo/linux-arm64": "2.9.6", "@turbo/windows-64": "2.9.6", "@turbo/windows-arm64": "2.9.6" }, "bin": { "turbo": "bin/turbo" } }, "sha512-+v2QJey7ZUeUiuigkU+uFfklvNUyPI2VO2vBpMYJA+a1hKFLFiKtUYlRHdb3P9CrAvMzi0upbjI4WT+zKtqkBg=="],
+    "turbo": ["turbo@2.9.18", "", { "optionalDependencies": { "@turbo/darwin-64": "2.9.18", "@turbo/darwin-arm64": "2.9.18", "@turbo/linux-64": "2.9.18", "@turbo/linux-arm64": "2.9.18", "@turbo/windows-64": "2.9.18", "@turbo/windows-arm64": "2.9.18" }, "bin": { "turbo": "bin/turbo" } }, "sha512-bwabv6PupzeavybzEoArBAkwq5fnzwf8OFnRtpHwnviFWuwJPFxtyH+aVp36TmIqK3aYYgtTJ3J0m2ysxxSzQg=="],

    "type": ["type@2.7.3", "", {}, "sha512-8j+1QmAbPvLZow5Qpi6NCaN8FB60p/6x8/vfNqOk/hC+HuvFZhL4+WfekuhQLiqFZXOgQdrs3B+XxEmCc6b3FQ=="],

@@ -3547,10 +3568,6 @@

    "@babel/highlight/picocolors": ["picocolors@1.1.0", "", {}, "sha512-TQ92mBOW0l3LeMeyLV6mzy/kWr8lkd/hp3mTg7wYK7zJhuBStmGMBG0BdeDZS/dZx1IukaX6Bk11zcln25o1Aw=="],

-    "@changesets/assemble-release-plan/semver": ["semver@7.7.2", "", { "bin": { "semver": "bin/semver.js" } }, "sha512-RF0Fw+rO5AMf9MAyaRXI4AV0Ulj5lMHqVxxdSgiVbixSCXoEmmX/jk0CuJw4+3SqroYO9VoUh+HcuJivvtJemA=="],
-
-    "@changesets/get-dependents-graph/semver": ["semver@7.7.2", "", { "bin": { "semver": "bin/semver.js" } }, "sha512-RF0Fw+rO5AMf9MAyaRXI4AV0Ulj5lMHqVxxdSgiVbixSCXoEmmX/jk0CuJw4+3SqroYO9VoUh+HcuJivvtJemA=="],
-
    "@changesets/logger/picocolors": ["picocolors@1.1.0", "", {}, "sha512-TQ92mBOW0l3LeMeyLV6mzy/kWr8lkd/hp3mTg7wYK7zJhuBStmGMBG0BdeDZS/dZx1IukaX6Bk11zcln25o1Aw=="],

    "@codemirror/lang-html/@codemirror/autocomplete": ["@codemirror/autocomplete@6.18.1", "", { "dependencies": { "@codemirror/language": "^6.0.0", "@codemirror/state": "^6.0.0", "@codemirror/view": "^6.17.0", "@lezer/common": "^1.0.0" } }, "sha512-iWHdj/B1ethnHRTwZj+C1obmmuCzquH29EbcKr0qIjA9NfDeBDJ7vs+WOHsFeLeflE4o+dHfYndJloMKHUkWUA=="],
@@ -4015,6 +4032,8 @@

    "@vue/compiler-sfc/magic-string": ["magic-string@0.30.18", "", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.5" } }, "sha512-yi8swmWbO17qHhwIBNeeZxTceJMeBvWJaId6dyvTSOwTipqeHhMhOrz6513r1sOKnpvQ7zkhlG8tPrpilwTxHQ=="],

+    "@vue/compiler-sfc/postcss": ["postcss@8.5.6", "", { "dependencies": { "nanoid": "^3.3.11", "picocolors": "^1.1.1", "source-map-js": "^1.2.1" } }, "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg=="],
+
    "@zenuml/core/marked": ["marked@4.3.0", "", { "bin": { "marked": "bin/marked.js" } }, "sha512-PRsaiG84bK+AMvxziE/lCFss8juXjNaWzVbN5tXAm4XjeaS9NAHhop+PjQxz2A9h8Q4M/xGmzP8vqNwy6JeK0A=="],

    "@zenuml/core/tailwind-merge": ["tailwind-merge@3.4.1", "", {}, "sha512-2OA0rFqWOkITEAOFWSBSApYkDeH9t2B3XSJuI4YztKBzK3mX0737A2qtxDZ7xkw9Zfh0bWl+r34sF3HXV+Ig7Q=="],
@@ -4587,6 +4606,8 @@

    "@vue/compiler-sfc/@babel/parser/@babel/types": ["@babel/types@7.28.2", "", { "dependencies": { "@babel/helper-string-parser": "^7.27.1", "@babel/helper-validator-identifier": "^7.27.1" } }, "sha512-ruv7Ae4J5dUYULmeXw1gmb7rYRz57OWCPM57pHojnLq/3Z1CK2lNSLTCVjxVk1F/TZHwOZZrOWi0ur95BbLxNQ=="],

+    "@vue/compiler-sfc/postcss/nanoid": ["nanoid@3.3.11", "", { "bin": { "nanoid": "bin/nanoid.cjs" } }, "sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w=="],
+
    "@zenuml/core/tailwindcss/arg": ["arg@5.0.2", "", {}, "sha512-PYjyFOLKQ9y57JvQ6QLo8dAgNqswh8M1RMJYdQduT6xbWSgK36P/Z/v+p888pM69jMMfS8Xd8F6I1kQ/I9HUGg=="],

    "@zenuml/core/tailwindcss/chokidar": ["chokidar@3.6.0", "", { "dependencies": { "anymatch": "~3.1.2", "braces": "~3.0.2", "glob-parent": "~5.1.2", "is-binary-path": "~2.1.0", "is-glob": "~4.0.1", "normalize-path": "~3.0.0", "readdirp": "~3.6.0" }, "optionalDependencies": { "fsevents": "~2.3.2" } }, "sha512-7VT13fmjotKpGipCW9JEQAusEPE+Ei8nl6/g4FBAmIm0GOOLMua9NDDo/DWp0ZAxCr3cPq5ZpBqmPAQgDda2Pw=="],
@@ -4595,6 +4616,8 @@

    "@zenuml/core/tailwindcss/jiti": ["jiti@1.21.7", "", { "bin": { "jiti": "bin/jiti.js" } }, "sha512-/imKNG4EbWNrVjoNC/1H5/9GFy+tqjGBHCaSsN+P2RnPqjsLmv6UD3Ej+Kj8nBWaRAwyk7kK5ZUc+OEatnTR3A=="],

+    "@zenuml/core/tailwindcss/postcss": ["postcss@8.5.6", "", { "dependencies": { "nanoid": "^3.3.11", "picocolors": "^1.1.1", "source-map-js": "^1.2.1" } }, "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg=="],
+
    "@zenuml/core/tailwindcss/postcss-selector-parser": ["postcss-selector-parser@6.1.2", "", { "dependencies": { "cssesc": "^3.0.0", "util-deprecate": "^1.0.2" } }, "sha512-Q8qQfPiZ+THO/3ZrOrO0cJJKfpYCagtMUkXbnEfmgUjwXg6z/WBeOyS9APBBPCTSiDV+s4SwQGu8yFsiMRIudg=="],

    "accepts/mime-types/mime-db": ["mime-db@1.53.0", "", {}, "sha512-oHlN/w+3MQ3rba9rqFr6V/ypF10LSkdwUysQL7GkXoTgIWeV+tcXGA852TBxH+gsh8UWoyhR1hKcoMJTuWflpg=="],
@@ -4767,6 +4790,8 @@

    "@zenuml/core/tailwindcss/chokidar/readdirp": ["readdirp@3.6.0", "", { "dependencies": { "picomatch": "^2.2.1" } }, "sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA=="],

+    "@zenuml/core/tailwindcss/postcss/nanoid": ["nanoid@3.3.11", "", { "bin": { "nanoid": "bin/nanoid.cjs" } }, "sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w=="],
+
    "micro/raw-body/http-errors/depd": ["depd@1.1.2", "", {}, "sha512-7emPTl6Dpo6JRXOXjLRxck+FlLRX5847cLKEn00PLAgc3g2hTZZgr+e4c2v6QpSmLeFP3n5yUo7ft6avBK/5jQ=="],

    "micro/raw-body/http-errors/setprototypeof": ["setprototypeof@1.1.1", "", {}, "sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw=="],
@@ -6,8 +6,8 @@
    },
    "devDependencies": {
        "@biomejs/biome": "^1.9.4",
-        "@changesets/cli": "^2.30.0",
-        "turbo": "^2.9.6",
+        "@changesets/cli": "^2.31.0",
+        "turbo": "^2.9.18",
        "vercel": "50.37.3"
    },
    "packageManager": "bun@1.3.7",
@@ -43,7 +43,7 @@
        "catalog": {
            "@tsconfig/strictest": "^2.0.6",
            "@tsconfig/node20": "^20.1.6",
-            "@gitbook/api": "0.177.0",
+            "@gitbook/api": "0.185.0",
            "@scalar/api-client-react": "^1.3.46",
            "@types/react": "^19.0.0",
            "@types/react-dom": "^19.0.0",
@@ -55,12 +55,13 @@
            "react-dom": "^19.0.1",
            "tsdown": "^0.15.6",
            "typescript": "^5.5.3",
-            "usehooks-ts": "^3.1.1"
+            "usehooks-ts": "^3.1.1",
+            "vercel": "^50.26.1"
        }
    },
    "patchedDependencies": {
        "decode-named-character-reference@1.0.2": "patches/decode-named-character-reference@1.0.2.patch",
        "@vercel/next@4.4.2": "patches/@vercel%2Fnext@4.4.2.patch",
-        "next@16.2.3": "patches/next@16.2.3.patch"
+        "next@16.2.6": "patches/next@16.2.6.patch"
    }
 }
@@ -1,5 +1,13 @@
 # @gitbook/embed

+## 0.5.1
+
+### Patch Changes
+
+- 37a9453: Allow copying in embed
+- Updated dependencies [47c8ccb]
+  - @gitbook/icons@0.5.0
+
 ## 0.5.0

 ### Minor Changes
@@ -13,7 +13,7 @@
        }
    },
    "sideEffects": false,
-    "version": "0.5.0",
+    "version": "0.5.1",
    "dependencies": {
        "@gitbook/api": "catalog:",
        "@gitbook/icons": "workspace:",
@@ -44,6 +44,16 @@ export function createGitBookFrame(iframe: HTMLIFrameElement): GitBookFrameClien
    if (!iframe.contentWindow) {
        throw new Error('Iframe must have a content window');
    }
+
+    const allowTokens = iframe.allow
+        .split(';')
+        .map((token) => token.trim())
+        .filter(Boolean);
+
+    if (!allowTokens.includes('clipboard-write')) {
+        iframe.allow = [...allowTokens, 'clipboard-write'].join('; ');
+    }
+
    const channel = createChannel(iframe.contentWindow);

    channel.receive((message: FrameToParentMessage) => {
@@ -76,6 +76,7 @@ export function GitBookFrame(props: GitBookFrameProps) {
            src={frameURL}
            width="100%"
            height="100%"
+            allow="clipboard-write"
            className={className}
            style={colorScheme ? { colorScheme } : undefined}
        />
@@ -101,6 +101,7 @@ function getIframe() {
        widgetIframe?.remove();
        widgetIframe = document.createElement('iframe');
        widgetIframe.id = 'gitbook-widget-iframe';
+        widgetIframe.allow = 'clipboard-write';
        if (frameOptions?.colorScheme) {
            widgetIframe.style.colorScheme = frameOptions.colorScheme;
        }
@@ -1,5 +1,11 @@
 # @gitbook/expr

+## 1.3.0
+
+### Minor Changes
+
+- 6eabaec: Implement a getVariables function for ExpressionRuntime
+
 ## 1.2.5

 ### Patch Changes
@@ -1,7 +1,7 @@
 {
    "name": "@gitbook/expr",
    "description": "Safely evaluate & parse user-defined GitBook expressions.",
-    "version": "1.2.5",
+    "version": "1.3.0",
    "type": "module",
    "exports": {
        ".": {
@@ -195,6 +195,49 @@ describe('ExpressionRuntime', () => {
        );
    });

+    describe('getVariables', () => {
+        it.each([
+            {
+                scenario: 'single variable',
+                condition: 'isBetaUser === true',
+                expectedVariables: ['isBetaUser'],
+            },
+            {
+                scenario: 'multiple variables',
+                condition: 'useProductA && !isBetaUser',
+                expectedVariables: ['useProductA', 'isBetaUser'],
+            },
+            {
+                scenario: 'member expression',
+                condition: 'user.role === "admin"',
+                expectedVariables: ['user.role'],
+            },
+            {
+                scenario: 'nested member expression with method call',
+                condition: 'products.includes("productA") && userSegments.alpha',
+                expectedVariables: ['products.includes', 'userSegments.alpha'],
+            },
+        ])(
+            'should return variables used in expression: $scenario',
+            ({ condition, expectedVariables }) => {
+                expect(runtime.getVariables(condition)).toEqual(expectedVariables);
+            }
+        );
+
+        it.each([
+            {
+                scenario: 'invalid syntax',
+                condition: 't}=d',
+            },
+            {
+                scenario: 'non conditional expression',
+                condition: 'const a = 1;',
+            },
+        ])('should return an empty array for invalid expressions: $scenario', ({ condition }) => {
+            expect(runtime.getVariables(condition)).toEqual([]);
+        });
+    });
+
    describe.skip('generate', () => {
        it.each([
            {
@@ -11,7 +11,7 @@ import {
 import { parse as parseLoose } from 'acorn-loose';
 import escodegen from 'escodegen';
 import evalESTreeExpr from 'eval-estree-expression';
-const { evaluate } = evalESTreeExpr;
+const { evaluate, variables } = evalESTreeExpr;

 import { AutoComplete } from './autocomplete';
 import { ExpressionError } from './errors';
@@ -162,6 +162,28 @@ export class ExpressionRuntime {
            .join('');
    }

+    /**
+     * Given an expression, returns a list of variables used in the expression.
+     */
+    public getVariables(expr: string): string[] {
+        try {
+            const parsed = this.parse(expr);
+
+            if (parsed.invalidNodes.length > 0) {
+                throw new ExpressionError('Invalid nodes found when parsing');
+            }
+
+            return variables(parsed.result, {
+                functions: true,
+                withMembers: true,
+                generate: escodegen.generate,
+            });
+        } catch (error) {
+            this.#logger.error(`Error while parsing expression ${expr} to get variables`, error);
+            return [];
+        }
+    }
+
    /**
     * Parses a binary expression and returns an @ExpressionParserResult.
     */
@@ -41,6 +41,16 @@ declare module 'eval-estree-expression' {
        options?: EvalESTreeExpressionOptions
    ): Promise<any>;

+    /**
+     * Given an ESTree-compliant AST node, returns a list of variables used in the expression.
+     * @param ast An object representing an ESTree-compliant AST node.
+     * @param options Options for evaluation and compilation.
+     */
+    export function variables<ASTNode>(
+        ast: ASTNode,
+        options?: EvalESTreeExpressionOptions
+    ): string[];
+
    /**
     * Evaluates an ESTree expression synchronously against a given context.
     * @param expression - An object representing an ESTree-compliant AST node.
@@ -1,5 +1,90 @@
 # gitbook

+## 0.27.1
+
+### Patch Changes
+
+- acf2719: Mark the AI Assistant chat as `aria-busy` while it is generating a response (including the follow-up suggestion phase), so assistive technologies are notified of the in-progress state.
+- 72a1596: Fix the AI assistant panel overflowing its frame when rendering single/multi-choice question forms with long option text.
+- 77c717c: Assistant: group all of a turn's tool calls behind a single "Explored with N tools" expandable instead of rendering a separate single-item expandable for each client-side tool call.
+- c44d822: Trust an optional cookieless integration content host (`GITBOOK_INTEGRATIONS_CONTENT_HOST`) for WebFrame postMessage, in preparation for isolating integration-rendered content onto a separate origin. Defaults to `GITBOOK_INTEGRATIONS_HOST`, so behavior is unchanged until the content host is configured.
+- 7655041: Match keyboard shortcuts by the logical character typed instead of the physical key position, so that ⌘-C no longer opens the Assistant on the Dvorak layout (and other non-QWERTY layouts).
+- af3cda1: Fix wide content (such as code blocks and tables) overflowing the edges of hint blocks instead of scrolling within them.
+- 0ca4952: Remove the external link button from the link tooltip hover card, as its arrow read as clickable even though the preview card isn't interactive.
+- 3ff88ba: Add a Prompt block
+- 251630c: Drive page actions ordering and default action from the new `pageActions.items` list, including the reorderable assistant action
+- ddba803: Add a page reference chip when opening the Assistant from the page action, so the assistant is informed about the page the reader is currently on.
+- f4469b2: Support OpenAPI one-operation-per-page mode
+- 6c967c9: Add a client-side search field to table blocks, with per-column filters for select and checkbox columns
+- 882dfcd: Tidy prompt and add e2e test
+- Updated dependencies [f4469b2]
+- Updated dependencies [88b94b5]
+  - @gitbook/react-openapi@1.5.14
+
+## 0.27.0
+
+### Minor Changes
+
+- aa9d41a: Update llms.txt footer for GitBook sites
+- 4f754a7: Add GitBook information to footer of markdown pages
+- 2ecbdd8: Add a `navigateToPage` assistant tool that lets the AI open a documentation page on the reader's behalf. The page opens instantly (no confirmation) and is pushed to the browser history so the reader can navigate back.
+
+### Patch Changes
+
+- 7036b67: Fix custom assistants (e.g. Kapa, Inkeep) being opened twice when clicking "Ask with …" in the search bar.
+- 2885a13: Fix heading anchor alignment with heading text and translate its accessibility label.
+- b9bb535: Allow Mermaid diagrams to be enlarged into a fullscreen dialog from a control in the bottom-right corner. Clicking outside the dialog, pressing Escape, or using the reduce control returns to the inline view.
+- b116a0a: Fix OpenAPI CodeBlock scroll
+- d83ea4c: Improve a11y of list item collapse/extend toggle
+- 92b6856: Add Ask AI in CodeBlock
+- 7a1236a: Fix search results linking to the page instead of the section anchor when a section snippet is displayed.
+- b9bb535: Make `Tooltip` content non-interactive when `disableHoverableContent` is set, so its portaled popper wrapper no longer steals pointer events (e.g. hover-revealed controls) from the trigger.
+- Updated dependencies [6eabaec]
+- Updated dependencies [f158064]
+  - @gitbook/expr@1.3.0
+  - @gitbook/react-openapi@1.5.13
+
+## 0.26.2
+
+### Patch Changes
+
+- 67f31aa: Allow user-triggered AI assistants (ChatGPT-User, Claude-User, Perplexity-User) to read pages on non-indexable sites, so end-users can pull content into an LLM without an MCP connection. Search engines and training crawlers remain blocked.
+- 0c577a0: Allow CORS for the same root domain
+- 51fef84: Remove the date-gated header logo height logic and always apply the compact logo size to prevent size shifts between sections and translations.
+- f405fff: Add icon support in tab items
+- 3697dfe: Add support for hiding page actions from page layout options.
+- 127ef54: Add tag filtering controls for Updates blocks.
+
+## 0.26.1
+
+### Patch Changes
+
+- b70b8fd: Fix llms-full.txt pagination to include pages from all site sections.
+- 6ba5e54: Support isComposing for search
+- 47c8ccb: Render icons as svg markup
+- a9ba996: Fix left/right aligment of images with caption
+- 56aeb19: Fix events tracked from the middleware missing some properties.
+- Updated dependencies [47c8ccb]
+- Updated dependencies [37a9453]
+  - @gitbook/icons@0.5.0
+  - @gitbook/embed@0.5.1
+  - @gitbook/react-contentkit@0.7.16
+
+## 0.26.0
+
+### Minor Changes
+
+- d3d5150: Add "Content-Signal" to "robots.txt"
+- 7595706: Allow AI agents to ask questions and get the answer in markdown when fetching with `?ask=<question>`.
+- a17ab65: Support variant selector in hidden section
+
+### Patch Changes
+
+- d1a2958: Skip AI questions when it matches the example provided to agents / crawlers.
+- e3aca9e: Fix embeddable search links
+- 4b78672: Fix links to other spaces/sections in the llms.txt.
+- d1a2958: Pass visitor session to Ask AI.
+
 ## 0.25.1

 ### Patch Changes
@@ -110,11 +110,12 @@ const testCases: TestsCase[] = [
        contentBaseURL: 'https://docs.midas.app',
        tests: [{ name: 'Home', url: '/' }],
    },
-    {
-        name: 'docs.keeper.io',
-        contentBaseURL: 'https://docs.keeper.io',
-        tests: [{ name: 'Home', url: '/', run: waitForCookiesDialog }],
-    },
+    // Disabling for now, one of the image is making the tests timeout
+    // {
+    //     name: 'docs.keeper.io',
+    //     contentBaseURL: 'https://docs.keeper.io',
+    //     tests: [{ name: 'Home', url: '/en', run: waitForCookiesDialog }],
+    // },
    {
        name: 'adiblar.gitbook.io',
        contentBaseURL: 'https://adiblar.gitbook.io',
@@ -222,11 +223,12 @@ const testCases: TestsCase[] = [
        contentBaseURL: 'https://docs.soniclabs.com',
        tests: [{ name: 'Home', url: '/' }],
    },
-    {
-        name: 'docs.meshchain.ai',
-        contentBaseURL: 'https://docs.meshchain.ai',
-        tests: [{ name: 'Home', url: '/' }],
-    },
+    // This one redirects to binance now
+    // {
+    //     name: 'docs.meshchain.ai',
+    //     contentBaseURL: 'https://docs.meshchain.ai',
+    //     tests: [{ name: 'Home', url: '/' }],
+    // },
    {
        name: 'docs.thousandeyes.com',
        contentBaseURL: 'https://docs.thousandeyes.com',
@@ -31,12 +31,24 @@ import {
    headerLinks,
    runTestCases,
    setTimeToMorning,
+    waitForAIChatResponse,
    waitForCookiesDialog,
    waitForCoverImages,
    waitForNotFound,
 } from './util';

-const AI_PROMPT = `You're being invoked by the GitBook CI/CD pipeline. Search for "Lorem ipsum", then return the first sentence of the first page you find.`;
+// Kept as deterministic as possible to reduce visual flakiness: no preamble, a
+// single fixed search, a concise answer, and a fixed number of follow-ups. The
+// model is never perfectly deterministic, so `overrideAIResponse` still
+// normalizes the rendered content below — this prompt just narrows the variance.
+const AI_PROMPT = [
+    "You're being invoked by the GitBook CI/CD pipeline for automated visual testing.",
+    'Follow these instructions exactly and do not deviate:',
+    '1. Do not write any preamble, commentary, or reasoning before acting.',
+    '2. Perform a single search for exactly "Lorem ipsum".',
+    '3. Reply with only the first sentence of the first page you find, and nothing else.',
+    '4. Always end by proposing exactly 3 follow-up suggestions.',
+].join('\n');

 const overrideAIInitialState = () => {
    const greeting = document.querySelector('[data-testid="ai-chat-greeting-title"]');
@@ -44,21 +56,45 @@ const overrideAIInitialState = () => {
        greeting.textContent = 'Good morning';
    }
 };
+
+/**
+ * Normalize the non-deterministic content of an AI response before screenshotting,
+ * while preserving the surrounding structure (message bubbles, tool/activity
+ * summary, response container, suggestion buttons) so visual regressions in the
+ * chat chrome are still caught. The actual answer formatting is covered separately
+ * by the deterministic page tests, since the AI response renders through the same
+ * `DocumentView`.
+ *
+ * Must run only once the chat is no longer `aria-busy` (the response has fully
+ * settled), otherwise React re-renders from late stream events will clobber these
+ * mutations. See `waitForAIChatResponse`.
+ */
 const overrideAIResponse = () => {
-    const userMessage = document.querySelector('[data-testid="ai-chat-message-user"]');
-    if (userMessage) {
+    // The user's prompt varies in length; pin it to a fixed string.
+    document.querySelectorAll('[data-testid="ai-chat-message-user"]').forEach((userMessage) => {
        userMessage.textContent = '[Replaced message] Chat message sent by the user';
-    }
-    const assistantMessage = document.querySelectorAll(
-        '[data-testid="ai-chat-message-assistant"] .ai-response-document'
-    );
-    assistantMessage.forEach((message) => {
-        message.innerHTML = '[Replaced message] AI chat response';
    });
-    const suggestions = document.querySelectorAll('[data-testid="ai-chat-followup-suggestion"]');
-    suggestions.forEach((suggestion) => {
-        suggestion.textContent = 'Follow-up suggestion';
+
+    // The assistant's answer text is non-deterministic; replace the rendered
+    // document body while keeping the `.ai-response-document` container.
+    document
+        .querySelectorAll('[data-testid="ai-chat-message-assistant"] .ai-response-document')
+        .forEach((message) => {
+            message.innerHTML = '<p>[Replaced message] AI chat response</p>';
+        });
+
+    // The "Explored with N tools" activity label varies with the number of tool
+    // calls; pin it (the chevron sibling is left intact).
+    document.querySelectorAll('[data-testid="ai-chat-activity-summary"]').forEach((summary) => {
+        summary.textContent = 'Explored';
    });
+
+    // Follow-up suggestion text varies; pin each label.
+    document
+        .querySelectorAll('[data-testid="ai-chat-followup-suggestion"]')
+        .forEach((suggestion) => {
+            suggestion.textContent = 'Follow-up suggestion';
+        });
 };

 const searchTestCases: Test[] = [
@@ -82,8 +118,6 @@ const searchTestCases: Test[] = [
            });
            const pageResults = await page.getByTestId('search-page-result').all();
            await expect(pageResults.length).toBeGreaterThanOrEqual(1);
-            const pageSectionResults = await page.getByTestId('search-page-section-result').all();
-            await expect(pageSectionResults.length).toBeGreaterThanOrEqual(2);
            await expect(page.getByTestId('search-ask-question')).toHaveCount(0); // No AI search results with aiMode=None.
        },
    },
@@ -169,12 +203,13 @@ const searchTestCases: Test[] = [
            await expect(page.getByTestId('ai-chat')).toBeVisible();
            await expect(page.getByTestId('ai-chat-message-user').first()).toHaveText(AI_PROMPT);
            await expect(page.getByTestId('ai-chat-message-assistant').first()).toBeVisible();
-            await expect(page.getByTestId('ai-chat-followup-suggestion')).toHaveCount(3, {
-                timeout: 60_000,
-            });
-            // Override text content for visual consistency in screenshots
-            await page.evaluate(overrideAIResponse);
+            // Wait for the full response (incl. follow-up suggestions) to settle before
+            // asserting/screenshotting, rather than racing a fixed suggestion count.
+            await waitForAIChatResponse(page);
+            await expect(page.getByTestId('ai-chat-followup-suggestion').first()).toBeVisible();
        },
+        // Re-applied per viewport so the replacement survives resize-driven re-renders.
+        normalizeBeforeScreenshot: (page) => page.evaluate(overrideAIResponse),
    },
    {
        name: 'Ask - AI Mode: Assistant - Keyboard shortcut',
@@ -188,9 +223,9 @@ const searchTestCases: Test[] = [
            await page.keyboard.press('ControlOrMeta+I');
            await expect(page.getByTestId('ai-chat')).toBeVisible();
            await expect(page.getByTestId('ai-chat-input')).toBeFocused();
-            // Override text content for visual consistency in screenshots
-            await page.evaluate(overrideAIInitialState);
        },
+        // Re-applied per viewport so the replacement survives resize-driven re-renders.
+        normalizeBeforeScreenshot: (page) => page.evaluate(overrideAIInitialState),
    },
    {
        name: 'Ask - AI Mode: Assistant - Button',
@@ -204,9 +239,9 @@ const searchTestCases: Test[] = [
            await page.getByTestId('ai-chat-button').click();
            await expect(page.getByTestId('ai-chat')).toBeVisible();
            await expect(page.getByTestId('ai-chat-input')).toBeFocused();
-            // Override text content for visual consistency in screenshots
-            await page.evaluate(overrideAIInitialState);
        },
+        // Re-applied per viewport so the replacement survives resize-driven re-renders.
+        normalizeBeforeScreenshot: (page) => page.evaluate(overrideAIInitialState),
    },
    {
        name: 'Ask - AI Mode: Assistant - URL query (Initial)',
@@ -221,9 +256,9 @@ const searchTestCases: Test[] = [
            await expect(page.getByTestId('search-input')).toBeEmpty();
            await expect(page.getByTestId('ai-chat')).toBeVisible();
            await expect(page.getByTestId('ai-chat-input')).toBeFocused();
-            // Override text content for visual consistency in screenshots
-            await page.evaluate(overrideAIInitialState);
        },
+        // Re-applied per viewport so the replacement survives resize-driven re-renders.
+        normalizeBeforeScreenshot: (page) => page.evaluate(overrideAIInitialState),
    },
    {
        name: 'Ask - AI Mode: Assistant - URL query (Results)',
@@ -239,12 +274,13 @@ const searchTestCases: Test[] = [
            await expect(page.getByTestId('ai-chat')).toBeVisible();
            await expect(page.getByTestId('ai-chat-message-user').first()).toHaveText(AI_PROMPT);
            await expect(page.getByTestId('ai-chat-message-assistant').first()).toBeVisible();
-            await expect(page.getByTestId('ai-chat-followup-suggestion')).toHaveCount(3, {
-                timeout: 60_000,
-            });
-            // Override text content for visual consistency in screenshots
-            await page.evaluate(overrideAIResponse);
+            // Wait for the full response (incl. follow-up suggestions) to settle before
+            // asserting/screenshotting, rather than racing a fixed suggestion count.
+            await waitForAIChatResponse(page);
+            await expect(page.getByTestId('ai-chat-followup-suggestion').first()).toBeVisible();
        },
+        // Re-applied per viewport so the replacement survives resize-driven re-renders.
+        normalizeBeforeScreenshot: (page) => page.evaluate(overrideAIResponse),
    },
 ];

@@ -876,6 +912,7 @@ const testCases: TestsCase[] = [
    {
        name: 'Content tests',
        contentBaseURL: 'https://gitbook.gitbook.io/test-gitbook-open/',
+        fullPage: true,
        tests: [
            {
                name: 'Text',
@@ -1057,8 +1094,8 @@ const testCases: TestsCase[] = [
                url: 'blocks/annotations',
                run: async (page) => {
                    await waitForCookiesDialog(page);
-                    await page.waitForSelector('[data-testid="annotation-button"]');
-                    await page.click('[data-testid="annotation-button"]');
+                    await page.waitForSelector('[data-annotation]');
+                    await page.click('[data-annotation]');
                },
            },
            {
@@ -1076,6 +1113,11 @@ const testCases: TestsCase[] = [
                url: 'blocks/mermaid',
                run: waitForCookiesDialog,
            },
+            {
+                name: 'Prompt',
+                url: 'blocks/prompt',
+                run: waitForCookiesDialog,
+            },
        ],
    },
    {
@@ -1324,6 +1366,7 @@ const testCases: TestsCase[] = [
                    pageActions: {
                        markdown: false,
                        externalAI: false,
+                        items: [],
                    },
                }),
                run: waitForCookiesDialog,
@@ -2222,9 +2265,13 @@ const testCases: TestsCase[] = [

                    await iframe.getByTestId('embed-tab-assistant').click(); // Switch to assistant tab
                    await expect(iframe.getByTestId('ai-chat')).toBeVisible();
-
-                    await iframe.owner().evaluate(overrideAIInitialState);
                },
+                // Runs inside the iframe (not the parent doc) and per viewport.
+                normalizeBeforeScreenshot: (page) =>
+                    page
+                        .frameLocator('#gitbook-widget-iframe')
+                        .locator('body')
+                        .evaluate(overrideAIInitialState),
            },
            {
                name: 'API - navigateToPage',
@@ -2258,8 +2305,15 @@ const testCases: TestsCase[] = [
                    await expect(iframe.getByTestId('ai-chat-message-user').first()).toHaveText(
                        AI_PROMPT
                    );
-                    await iframe.owner().evaluate(overrideAIResponse);
+                    // Wait for the full response to settle before normalizing.
+                    await waitForAIChatResponse(iframe);
                },
+                // Runs inside the iframe (not the parent doc) and per viewport.
+                normalizeBeforeScreenshot: (page) =>
+                    page
+                        .frameLocator('#gitbook-widget-iframe')
+                        .locator('body')
+                        .evaluate(overrideAIResponse),
            },
            {
                name: 'Configuration - Suggested questions',
@@ -2285,8 +2339,13 @@ const testCases: TestsCase[] = [
                    await expect(
                        iframe.getByTestId('ai-chat-suggested-question').nth(2)
                    ).toHaveText('What can you do?');
-                    await iframe.owner().evaluate(overrideAIInitialState);
                },
+                // Runs inside the iframe (not the parent doc) and per viewport.
+                normalizeBeforeScreenshot: (page) =>
+                    page
+                        .frameLocator('#gitbook-widget-iframe')
+                        .locator('body')
+                        .evaluate(overrideAIInitialState),
            },
            {
                name: 'Configuration - Custom action buttons',
@@ -2368,8 +2427,15 @@ const testCases: TestsCase[] = [
                    await actions.nth(3).click();
                    await expect(page.locator('#gitbook-widget-window')).not.toBeVisible();
                    await page.locator('#gitbook-widget-button').click();
-                    await iframe.owner().evaluate(overrideAIResponse);
+                    // Wait for the response posted above to settle before normalizing.
+                    await waitForAIChatResponse(iframe);
                },
+                // Runs inside the iframe (not the parent doc) and per viewport.
+                normalizeBeforeScreenshot: (page) =>
+                    page
+                        .frameLocator('#gitbook-widget-iframe')
+                        .locator('body')
+                        .evaluate(overrideAIResponse),
            },
            {
                name: 'Configuration - Custom tools',
@@ -2413,8 +2479,16 @@ const testCases: TestsCase[] = [
                    await expect(toolConfirmation).toBeVisible({
                        timeout: 30000,
                    });
-                    await iframe.owner().evaluate(overrideAIResponse);
+                    // The turn settles (aria-busy clears) once the stream pauses on the
+                    // confirmation control; wait for that before normalizing.
+                    await waitForAIChatResponse(iframe);
                },
+                // Runs inside the iframe (not the parent doc) and per viewport.
+                normalizeBeforeScreenshot: (page) =>
+                    page
+                        .frameLocator('#gitbook-widget-iframe')
+                        .locator('body')
+                        .evaluate(overrideAIResponse),
            },
        ],
    },
@@ -13,6 +13,7 @@ import {
    CustomizationIconsStyle,
    CustomizationLinksStyle,
    CustomizationLocale,
+    CustomizationPageActionType,
    CustomizationSearchStyle,
    CustomizationSidebarBackgroundStyle,
    CustomizationSidebarListStyle,
@@ -21,7 +22,14 @@ import {
    type SiteCustomizationSettings,
    SiteExternalLinksTarget,
 } from '@gitbook/api';
-import { type BrowserContext, type Page, type Response, expect, test } from '@playwright/test';
+import {
+    type BrowserContext,
+    type FrameLocator,
+    type Page,
+    type Response,
+    expect,
+    test,
+} from '@playwright/test';
 import deepMerge from 'deepmerge';
 import rison from 'rison';
 import type { DeepPartial } from 'ts-essentials';
@@ -39,6 +47,16 @@ export interface Test {
     * Test to run
     */
    run?: (page: Page, response: Response | null) => Promise<unknown>;
+    /**
+     * Re-applied right before every viewport screenshot (after Argos
+     * stabilization), so it survives re-renders triggered by viewport resizing.
+     *
+     * Use this — rather than mutating the DOM once in `run` — to normalize
+     * non-deterministic content (e.g. AI responses). A one-time mutation in `run`
+     * is clobbered when React re-renders on resize (e.g. crossing the mobile
+     * breakpoint), so only the first viewport ends up normalized.
+     */
+    normalizeBeforeScreenshot?: (page: Page) => Promise<void> | void;
    /**
     * Mode for the test.
     */
@@ -75,6 +93,10 @@ export type TestsCase = {
    skip?: boolean;
    tests: Array<Test>;
    contentBaseURL?: string;
+    /**
+     * Whether screenshots in this test case should capture the full scrollable page by default.
+     */
+    fullPage?: boolean;
 };

 export const allLocales: CustomizationLocale[] = [
@@ -155,6 +177,28 @@ export async function waitForNotFound(_page: Page, response: Response | null) {
    expect(response?.status()).toBe(404);
 }

+/**
+ * Wait for an AI chat response to be fully settled before asserting or
+ * screenshotting it.
+ *
+ * The chat exposes `aria-busy` on its container (`[data-testid="ai-chat"]`),
+ * which stays true from the moment a message is sent until the stream — including
+ * the follow-up suggestion phase — completes. Gating on it avoids the two main
+ * sources of flakiness: capturing a "thinking" placeholder or a half-streamed
+ * answer, and running the content normalization while React is still re-rendering
+ * (which would clobber the replacements).
+ *
+ * Argos also waits for `aria-busy` to clear during its own stabilization
+ * (`waitForAriaBusy`), so this is both an explicit gate and a backstop.
+ *
+ * Accepts a `Page` or a `FrameLocator` (for the embedded assistant in an iframe).
+ */
+export async function waitForAIChatResponse(scope: Page | FrameLocator) {
+    await expect(scope.getByTestId('ai-chat')).toHaveAttribute('aria-busy', 'false', {
+        timeout: 60_000,
+    });
+}
+
 export async function setTimeToMorning(page: Page) {
    const now = new Date();
    now.setHours(8, 0, 0, 0); // 8:00:00.000 AM (local time)
@@ -240,15 +284,18 @@ export function runTestCases(testCases: TestsCase[]) {
                            .intercom-lightweight-app {
                                display: none !important;
                            }
-                            `,
+                                `,
                                threshold: screenshotOptions?.threshold ?? undefined,
-                                fullPage: testEntry.fullPage ?? false,
+                                fullPage: testEntry.fullPage ?? testCase.fullPage ?? false,
                                beforeScreenshot: async ({ runStabilization }) => {
                                    await runStabilization();
                                    if (screenshotOptions?.waitForTOCScrolling !== false) {
                                        await waitForTOCScrolling(page);
                                    }
                                    await waitForIcons(page);
+                                    // Re-apply per viewport, last — after any resize-driven
+                                    // re-render — so normalized content survives to capture.
+                                    await testEntry.normalizeBeforeScreenshot?.(page);
                                },
                            });
                        }
@@ -368,6 +415,11 @@ export function getCustomizationURL(partial: DeepPartial<SiteCustomizationSettin
            externalAI: true,
            markdown: true,
            mcp: true,
+            items: [
+                CustomizationPageActionType.Markdown,
+                CustomizationPageActionType.ExternalAi,
+                CustomizationPageActionType.Mcp,
+            ],
        },
        trademark: {
            enabled: true,
@@ -392,11 +444,13 @@ export function getCustomizationURL(partial: DeepPartial<SiteCustomizationSettin
 */
 export async function waitForIcons(page: Page) {
    await page.waitForFunction(() => {
-        const urlStates: Record<
+        type IconURLStates = Record<
            string,
            { state: 'pending'; uri: null } | { state: 'loaded'; uri: string }
-        > = (window as any).__ICONS_STATES__ || {};
-        (window as any).__ICONS_STATES__ = urlStates;
+        >;
+        const iconStatesWindow = window as Window & { __ICONS_STATES__?: IconURLStates };
+        const urlStates: IconURLStates = iconStatesWindow.__ICONS_STATES__ || {};
+        iconStatesWindow.__ICONS_STATES__ = urlStates;

        const fetchSvgAsDataUri = async (url: string): Promise<string> => {
            const response = await fetch(url);
@@ -441,7 +495,15 @@ export async function waitForIcons(page: Page) {

            const maskImage = icon.querySelector('[data-testid="mask-image"]');
            if (!maskImage) {
-                throw new Error('No mask-image element');
+                const inlineContent = icon.querySelector(
+                    'path, circle, ellipse, line, polygon, polyline, rect, g, use'
+                );
+                if (inlineContent) {
+                    icon.setAttribute('data-argos-state', 'loaded');
+                    return true;
+                }
+
+                throw new Error('Icon has no inline SVG content or mask-image element');
            }

            const url = maskImage.getAttribute('href');
@@ -48,6 +48,7 @@ const nextConfig = {
        GITBOOK_OAUTH_SERVER_URL: process.env.GITBOOK_OAUTH_SERVER_URL,
        GITBOOK_PREVIEW_BASE_URL: process.env.GITBOOK_PREVIEW_BASE_URL,
        GITBOOK_INTEGRATIONS_HOST: process.env.GITBOOK_INTEGRATIONS_HOST,
+        GITBOOK_INTEGRATIONS_CONTENT_HOST: process.env.GITBOOK_INTEGRATIONS_CONTENT_HOST,
        GITBOOK_IMAGE_RESIZE_URL: process.env.GITBOOK_IMAGE_RESIZE_URL,
        GITBOOK_ICONS_URL: process.env.GITBOOK_ICONS_URL,
        GITBOOK_ICONS_TOKEN: process.env.GITBOOK_ICONS_TOKEN,
@@ -5,7 +5,8 @@ export default withRegionalCache(new GitbookIncrementalCache(), {
    mode: 'long-lived',
    // We can do it because we use our own logic to invalidate the cache
    bypassTagCacheOnCacheHit: true,
-    defaultLongLivedTtlSec: 60 * 60 * 24 /* 24 hours */,
+    //TODO: bump it again once I figured out the race condition
+    defaultLongLivedTtlSec: 5 * 60, // 5 minutes
    // We don't want to update the cache entry on every cache hit
    shouldLazilyUpdateOnCacheHit: false,
 });
@@ -1,12 +1,15 @@
 import { withRegionalCache } from '@opennextjs/cloudflare/overrides/incremental-cache/regional-cache';
 import { GitbookIncrementalCache } from './incrementalCache';

+// We cannot have regional cache only in the middleware, otherwise it will override things on cache miss
+// and cause race conditions. This will be fixed in a future release of OpenNext
 export default withRegionalCache(new GitbookIncrementalCache(), {
    mode: 'long-lived',
    // Because of a race condition, the middleware may have populated the cache entry before `cache.match` had time to run on the server.
    // TODO: We should bypass the incremental cache entirely when the interceptor has caught the request. Should be done in OpenNext.
    bypassTagCacheOnCacheHit: false,
-    defaultLongLivedTtlSec: 60 * 60 * 24 /* 24 hours */,
+    //TODO: remove, reducing cache ttl of regional cache to help debugging
+    defaultLongLivedTtlSec: 5 * 60 /* 5 minutes */,
    // We don't want to update the cache entry on every cache hit
    shouldLazilyUpdateOnCacheHit: false,
 });
@@ -1,6 +1,6 @@
 {
    "name": "gitbook",
-    "version": "0.25.1",
+    "version": "0.27.1",
    "private": true,
    "dependencies": {
        "@cloudflare/workers-types": "^4.20251011.0",
@@ -19,20 +19,20 @@
        "@gitbook/react-openapi": "workspace:*",
        "@mermaid-js/mermaid-zenuml": "^0.2.2",
        "@modelcontextprotocol/sdk": "1.17.5",
-        "@opennextjs/aws": "3.10.1",
-        "@opennextjs/cloudflare": "1.19.1",
+        "@opennextjs/aws": "4.0.1",
+        "@opennextjs/cloudflare": "1.19.8",
        "@panzoom/panzoom": "^4.6.1",
        "@radix-ui/react-checkbox": "^1.0.4",
+        "@radix-ui/react-collapsible": "^1.1.12",
        "@radix-ui/react-dropdown-menu": "^2.1.12",
        "@radix-ui/react-hover-card": "^1.1.15",
        "@radix-ui/react-navigation-menu": "^1.2.3",
        "@radix-ui/react-popover": "^1.0.7",
        "@radix-ui/react-tooltip": "^1.1.8",
-        "@radix-ui/react-collapsible": "^1.1.12",
        "@sindresorhus/fnv1a": "^3.1.0",
        "@tailwindcss/container-queries": "^0.1.1",
        "@tusbar/cache-control": "^1.0.2",
-        "@vercel/agent-readability": "^0.2.1",
+        "@vercel/agent-readability": "^0.4.0",
        "ai": "^4.2.2",
        "assert-never": "catalog:",
        "bidc": "catalog:",
@@ -40,6 +40,7 @@
        "direction": "^2.0.1",
        "event-iterator": "^2.0.0",
        "feed": "^5.1.0",
+        "flexsearch": "^0.8.212",
        "image-size": "^2.0.2",
        "js-cookie": "^3.0.5",
        "jsontoxml": "^1.0.1",
@@ -51,19 +52,22 @@
        "mdast-util-gfm": "^3.1.0",
        "mdast-util-to-markdown": "^2.1.2",
        "memoizee": "^0.4.17",
-        "mermaid": "^11.12.3",
+        "mermaid": "^11.14.0",
        "micromark-extension-frontmatter": "^2.0.0",
        "micromark-extension-gfm": "^3.0.0",
        "motion": "^12.23.24",
-        "next": "^16.2.3",
+        "negotiator": "^1.0.0",
+        "next": "^16.2.6",
        "next-themes": "^0.4.6",
        "nuqs": "^2.2.3",
        "object-hash": "^3.0.0",
        "object-identity": "^0.1.2",
        "openapi-types": "^12.1.3",
        "p-map": "^7.0.3",
+        "p-retry": "^8.0.0",
        "quick-lru": "^7.0.1",
        "react": "19.2.4",
+        "react-aria": "^3.44.0",
        "react-dom": "19.2.4",
        "react-hotkeys-hook": "^4.4.1",
        "rehype-raw": "^7.0.0",
@@ -77,6 +81,7 @@
        "shiki": "^3.21.0",
        "tailwind-merge": "^2.2.0",
        "tailwind-shades": "^1.1.2",
+        "tldts": "^7.0.30",
        "unified": "^11.0.5",
        "unist-util-remove": "^4.0.0",
        "unist-util-visit": "^5.0.0",
@@ -18,6 +18,16 @@ export default defineConfig({
            use: {
                ...devices['Desktop Chrome'],
                channel: 'chrome',
+                launchOptions: {
+                    args: [
+                        // Disable subpixel (LCD) text so glyphs always render with
+                        // grayscale antialiasing — removes the red/blue edge fringing
+                        // that varies between macOS (local) and Linux (CI) runs.
+                        '--disable-lcd-text',
+                        // Disable font hinting so glyph rasterization is platform-independent.
+                        '--font-render-hinting=none',
+                    ],
+                },
            },
        },
    ],
@@ -1,4 +1,4 @@
-import { SiteInsightsDisplayContext } from '@gitbook/api';
+import { CustomizationPageActionType, SiteInsightsDisplayContext } from '@gitbook/api';

 import { type RouteLayoutParams, getDynamicSiteContext } from '@/app/utils';
 import { getExposableError, throwIfDataError } from '@/lib/data';
@@ -20,6 +20,17 @@ export async function handleMcpRequest(
    const { context } = await getDynamicSiteContext(params);
    const { dataFetcher, linker, site } = context;

+    // Use the configured `items` list when the API provides it, and fall back to the deprecated
+    // `mcp` flag otherwise (legacy mode), since this endpoint is called directly and cannot rely on
+    // any page-rendering fallback.
+    const { pageActions } = context.customization;
+    const isMcpEnabled = pageActions.items
+        ? pageActions.items.includes(CustomizationPageActionType.Mcp)
+        : pageActions.mcp;
+    if (!isMcpEnabled) {
+        return new Response('Not Found', { status: 404 });
+    }
+
    // Next.js request.url is the original URL and not the rewritten one from the middleware
    const requestURL = new URL(context.linker.toAbsoluteURL(context.linker.toPathInSite(endpoint)));
    requestURL.search = rawRequest.nextUrl.search;
@@ -158,7 +158,7 @@ function transformSitePageResult(args: {
        pageItem.sections
            ?.filter((section) => section.title || section.body)
            .map<ComputedSectionResult>((section) => {
-                let sectionHref = linker.toPathInSpace(pageItem.path);
+                let sectionHref = linker.toPathInSpace(section.path);

                if (spaceURL) {
                    if (asEmbeddable) {
@@ -186,5 +186,19 @@ function transformSitePageResult(args: {
                };
            }) ?? [];

-    return [page, ...pageSections];
+    // Find the best-scoring section to use as a body preview on the page result.
+    const bestSection = pageSections.reduce<ComputedSectionResult | undefined>(
+        (best, section) => (!best || section.score > best.score ? section : best),
+        undefined
+    );
+    if (bestSection) {
+        page.bestSection = {
+            href: bestSection.href,
+            title: bestSection.title,
+            body: bestSection.body,
+            score: bestSection.score,
+        };
+    }
+
+    return [page];
 }
@@ -0,0 +1,23 @@
+import { type RouteLayoutParams, getDynamicSiteContext } from '@/app/utils';
+import { StructurePreview } from '@/components/StructurePreview';
+import { GITBOOK_APP_URL } from '@/lib/env';
+import type { Metadata } from 'next';
+import { getStructurePreviewSnapshot } from '../snapshot';
+
+type PageProps = {
+    params: Promise<RouteLayoutParams>;
+};
+
+export const metadata: Metadata = {
+    robots: { index: false, follow: false },
+};
+
+export default async function Page(props: PageProps) {
+    const { context } = await getDynamicSiteContext(await props.params);
+    return (
+        <StructurePreview
+            initialSnapshot={getStructurePreviewSnapshot(context)}
+            GITBOOK_APP_URL={GITBOOK_APP_URL}
+        />
+    );
+}
@@ -0,0 +1,42 @@
+import type React from 'react';
+
+import { type RouteLayoutParams, getDynamicSiteContext } from '@/app/utils';
+import { CustomizationRootLayout } from '@/components/RootLayout';
+import { SiteLayoutClientContexts } from '@/components/SiteLayout/SiteLayoutClientContexts';
+import { getThemeFromMiddleware } from '@/lib/middleware';
+
+interface SiteDynamicLayoutProps {
+    params: Promise<RouteLayoutParams>;
+}
+
+export default async function RootLayout({
+    children,
+    ...props
+}: React.PropsWithChildren<SiteDynamicLayoutProps>) {
+    const { context } = await getDynamicSiteContext(await props.params);
+    const forcedTheme = await getThemeFromMiddleware();
+    return (
+        <CustomizationRootLayout
+            htmlClassName="sheet-open:gutter-stable overflow-hidden site-background"
+            bodyClassName="site-background"
+            forcedTheme={forcedTheme}
+            context={context}
+        >
+            <SiteLayoutClientContexts
+                contextId={context.contextId}
+                forcedTheme={
+                    forcedTheme ??
+                    (context.customization.themes.toggeable
+                        ? undefined
+                        : context.customization.themes.default)
+                }
+                defaultTheme={context.customization.themes.default}
+                themeStorageKey={`gitbook-theme-structure:${context.site.id}`}
+                externalLinksTarget={context.customization.externalLinks.target}
+                proxyOrigin={context.site.proxy?.origin}
+            >
+                {children}
+            </SiteLayoutClientContexts>
+        </CustomizationRootLayout>
+    );
+}
@@ -0,0 +1,184 @@
+import type {
+    CustomizationContentLink,
+    CustomizationHeaderItem,
+    SiteSection,
+    SiteSectionGroup,
+    SiteSpace,
+} from '@gitbook/api';
+import assertNever from 'assert-never';
+
+import type {
+    ClientSiteSection,
+    ClientSiteSectionGroup,
+    ClientSiteSections,
+} from '@/components/SiteSections';
+import { categorizeVariants } from '@/components/SpaceLayout/categorizeVariants';
+import type { StructurePreviewSnapshot } from '@/components/StructurePreview';
+import type { PreviewContentLink, PreviewHeaderLink } from '@/components/StructurePreview/types';
+import type { GitBookSiteContext, SiteSections } from '@/lib/context';
+import { getLocalizedDescription, getLocalizedTitle } from '@/lib/sites';
+
+export function getStructurePreviewSnapshot(context: GitBookSiteContext): StructurePreviewSnapshot {
+    const variants = categorizeVariants(context);
+    const sections = context.visibleSections ?? context.sections;
+
+    return {
+        site: {
+            title: context.site.title,
+        },
+        locale: context.locale,
+        customization: encodePreviewCustomization(context),
+        siteSpace: encodePreviewSiteSpace(context.siteSpace, context),
+        variants: {
+            generic: variants.generic.map((siteSpace) =>
+                encodePreviewDropdownSpace(siteSpace, context)
+            ),
+            translations: variants.translations.map((siteSpace) =>
+                encodePreviewDropdownSpace(siteSpace, context)
+            ),
+        },
+        sections: sections ? encodePreviewSiteSections(context, sections) : null,
+        icons: {
+            large: {
+                light: context.linker.toPathInSpace('~gitbook/icon?size=large&theme=light'),
+                dark: context.linker.toPathInSpace('~gitbook/icon?size=large&theme=dark'),
+            },
+        },
+    };
+}
+
+function encodePreviewCustomization(
+    context: GitBookSiteContext
+): StructurePreviewSnapshot['customization'] {
+    const { customization, locale } = context;
+
+    return {
+        styling: {
+            search: customization.styling.search,
+        },
+        favicon:
+            'emoji' in customization.favicon && customization.favicon.emoji
+                ? { emoji: customization.favicon.emoji }
+                : {},
+        header: {
+            preset: customization.header.preset,
+            logo: customization.header.logo
+                ? {
+                      light: customization.header.logo.light,
+                      dark: customization.header.logo.dark,
+                  }
+                : undefined,
+            links: customization.header.links.map((link) => encodePreviewHeaderLink(link, locale)),
+        },
+        ai: {
+            mode: customization.ai.mode,
+        },
+        trademark: {
+            enabled: customization.trademark.enabled,
+        },
+        socialAccounts: customization.socialAccounts
+            .filter((account) => account.display.header === true)
+            .map((account) => ({
+                platform: account.platform,
+                handle: account.handle,
+            })),
+    };
+}
+
+function encodePreviewHeaderLink(
+    link: CustomizationHeaderItem,
+    locale: GitBookSiteContext['locale']
+): PreviewHeaderLink {
+    return {
+        title: getLocalizedTitle(link, locale),
+        style: link.style,
+        hasTarget: Boolean(link.to),
+        links: link.links.map((subLink) => encodePreviewContentLink(subLink, locale)),
+    };
+}
+
+function encodePreviewContentLink(
+    link: CustomizationContentLink,
+    locale: GitBookSiteContext['locale']
+): PreviewContentLink {
+    return {
+        title: getLocalizedTitle(link, locale),
+        hasTarget: Boolean(link.to),
+    };
+}
+
+function encodePreviewSiteSpace(
+    siteSpace: SiteSpace,
+    context: GitBookSiteContext
+): StructurePreviewSnapshot['siteSpace'] {
+    return {
+        id: siteSpace.id,
+        title: getLocalizedTitle(siteSpace, context.locale),
+        path: siteSpace.path,
+    };
+}
+
+function encodePreviewDropdownSpace(
+    siteSpace: SiteSpace,
+    context: GitBookSiteContext
+): StructurePreviewSnapshot['variants']['generic'][number] {
+    return {
+        id: siteSpace.id,
+        title: getLocalizedTitle(siteSpace, context.locale),
+        isActive: siteSpace.id === context.siteSpace.id,
+    };
+}
+
+export function encodePreviewSiteSections(
+    context: Pick<GitBookSiteContext, 'locale'>,
+    sections: SiteSections
+): ClientSiteSections {
+    return {
+        list: sections.list.flatMap((item) => encodePreviewSectionItem(context, item)),
+        current: encodePreviewSection(context, sections.current),
+    };
+}
+
+function encodePreviewSectionItem(
+    context: Pick<GitBookSiteContext, 'locale'>,
+    item: SiteSection | SiteSectionGroup
+): (ClientSiteSection | ClientSiteSectionGroup)[] {
+    switch (item.object) {
+        case 'site-section':
+            return [encodePreviewSection(context, item)];
+        case 'site-section-group': {
+            const children = item.children.flatMap((child) =>
+                encodePreviewSectionItem(context, child)
+            );
+            if (children.length === 0) {
+                return [];
+            }
+
+            return [
+                {
+                    id: item.id,
+                    title: getLocalizedTitle(item, context.locale),
+                    icon: item.icon,
+                    object: item.object,
+                    children,
+                },
+            ];
+        }
+        default:
+            assertNever(item);
+    }
+}
+
+function encodePreviewSection(
+    context: Pick<GitBookSiteContext, 'locale'>,
+    section: SiteSection
+): ClientSiteSection {
+    return {
+        id: section.id,
+        title: getLocalizedTitle(section, context.locale),
+        description: getLocalizedDescription(section, context.locale),
+        icon: section.icon,
+        object: section.object,
+        url: '#',
+    };
+}
@@ -11,5 +11,5 @@ export async function GET(
 ) {
    const { context } = await getStaticSiteContext(await params);

-    return serveLLMsTxt(context, { withMarkdownPages: true });
+    return serveLLMsTxt(context);
 }
@@ -0,0 +1,24 @@
+import { type RouteLayoutParams, getStaticSiteContext } from '@/app/utils';
+import { serveAskMarkdown } from '@/routes/markdownAsk';
+import type { NextRequest } from 'next/server';
+
+export const dynamic = 'force-static';
+
+/**
+ * Serve an AI answer as markdown for a page, steered by the end goal ("goal")
+ * the calling agent provided via the `?goal=` search parameter.
+ *
+ * The goal is encoded as a path segment (rather than read from the query) because
+ * this route is statically rendered, mirroring how the question itself is handled.
+ */
+export async function GET(
+    _request: NextRequest,
+    { params }: { params: Promise<RouteLayoutParams & { question: string; goal: string }> }
+) {
+    const { question: encodedQuestion, goal: encodedGoal } = await params;
+    const { context } = await getStaticSiteContext(await params);
+    const question = decodeURIComponent(encodedQuestion);
+    const goal = decodeURIComponent(encodedGoal);
+
+    return serveAskMarkdown(context, question, { goal });
+}
@@ -0,0 +1,16 @@
+import { type RouteLayoutParams, getStaticSiteContext } from '@/app/utils';
+import { serveAskMarkdown } from '@/routes/markdownAsk';
+import type { NextRequest } from 'next/server';
+
+export const dynamic = 'force-static';
+
+export async function GET(
+    _request: NextRequest,
+    { params }: { params: Promise<RouteLayoutParams & { question: string }> }
+) {
+    const { question: encodedQuestion } = await params;
+    const { context } = await getStaticSiteContext(await params);
+    const question = decodeURIComponent(encodedQuestion);
+
+    return serveAskMarkdown(context, question);
+}
@@ -0,0 +1,183 @@
+import {
+    type RevisionPage,
+    type RevisionPageDocument,
+    type RevisionPageGroup,
+    SiteVisibility,
+} from '@gitbook/api';
+import type { NextRequest } from 'next/server';
+
+import { type RouteLayoutParams, getStaticSiteContext } from '@/app/utils';
+import { throwIfDataError } from '@/lib/data';
+import { isPageIndexable } from '@/lib/seo';
+import {
+    findSiteSpaceBy,
+    getFallbackSiteSpacePath,
+    getLocalizedTitle,
+    listAllSiteSpaces,
+} from '@/lib/sites';
+
+interface Breadcrumb {
+    label: string;
+    icon?: string;
+    emoji?: string;
+}
+
+interface RawIndexPage {
+    id: string;
+    title: string;
+    pathname: string;
+    siteSpaceId: string;
+    lang?: string;
+    icon?: string;
+    emoji?: string;
+    description?: string;
+    breadcrumbs?: Breadcrumb[];
+}
+
+type AncestorPage = RevisionPageDocument | RevisionPageGroup;
+
+interface IndexPageEntry {
+    page: RevisionPageDocument;
+    ancestors: AncestorPage[];
+}
+
+/**
+ * Walk the page tree and return all indexable document pages together with
+ * their ancestor chain (groups + parent documents), enabling breadcrumb generation.
+ */
+function getIndexablePagesWithAncestors(
+    rootPages: RevisionPage[],
+    ancestors: AncestorPage[] = []
+): IndexPageEntry[] {
+    const results: IndexPageEntry[] = [];
+
+    for (const page of rootPages) {
+        if (page.type === 'link' || page.type === 'computed') continue;
+        if (page.hidden || !isPageIndexable([], page)) continue;
+
+        if (page.type === 'document') {
+            results.push({ page, ancestors });
+            // Recurse into children with this document as an ancestor
+            if (page.pages?.length) {
+                results.push(
+                    ...getIndexablePagesWithAncestors(page.pages as RevisionPage[], [
+                        ...ancestors,
+                        page,
+                    ])
+                );
+            }
+        } else if (page.type === 'group') {
+            // Groups themselves are not documents — push them only as ancestors
+            if (page.pages?.length) {
+                results.push(
+                    ...getIndexablePagesWithAncestors(page.pages as RevisionPage[], [
+                        ...ancestors,
+                        page,
+                    ])
+                );
+            }
+        }
+    }
+
+    return results;
+}
+
+export const revalidate = 86400; // 1 day in seconds
+export const dynamic = 'force-static';
+
+export async function GET(
+    _request: NextRequest,
+    { params }: { params: Promise<RouteLayoutParams> }
+) {
+    const { context } = await getStaticSiteContext(await params);
+    const { dataFetcher, linker, structure } = context;
+
+    const visibleSpaces = listAllSiteSpaces(structure).filter((ss) => !ss.hidden);
+
+    const revisions = await Promise.all(
+        visibleSpaces.map((ss) =>
+            throwIfDataError(
+                dataFetcher.getRevision({
+                    spaceId: ss.space.id,
+                    revisionId: ss.space.revision,
+                })
+            )
+        )
+    );
+
+    const seen = new Set<string>();
+    const pages: RawIndexPage[] = [];
+
+    for (let i = 0; i < visibleSpaces.length; i++) {
+        const siteSpace = visibleSpaces[i]!;
+        const revision = revisions[i]!;
+        const forkedLinker = linker.withOtherSiteSpace({
+            spaceBasePath: getFallbackSiteSpacePath(context, siteSpace),
+        });
+
+        const lang = siteSpace.space.language ?? undefined;
+        const sectionInfo = findSiteSpaceBy(structure, (ss) => ss.id === siteSpace.id);
+        const { siteSection, siteSectionGroup } = sectionInfo ?? {};
+
+        for (const { page, ancestors } of getIndexablePagesWithAncestors(revision.pages)) {
+            const cacheKey = `${siteSpace.id}:${page.id}`;
+            if (seen.has(cacheKey)) continue;
+            seen.add(cacheKey);
+
+            const breadcrumbs: Breadcrumb[] = [
+                siteSectionGroup
+                    ? {
+                          label: getLocalizedTitle(siteSectionGroup, lang),
+                          icon: siteSectionGroup.icon ?? undefined,
+                      }
+                    : undefined,
+                siteSection
+                    ? {
+                          label: getLocalizedTitle(siteSection, lang),
+                          icon: siteSection.icon ?? undefined,
+                      }
+                    : undefined,
+                ...ancestors.map((a) => ({
+                    label: a.title,
+                    icon: a.icon ?? undefined,
+                    emoji: a.emoji ?? undefined,
+                })),
+            ].filter((c) => c !== undefined);
+
+            pages.push({
+                id: page.id,
+                title: page.title,
+                pathname: forkedLinker.toPathForPage({ pages: revision.pages, page }),
+                siteSpaceId: siteSpace.id,
+                lang,
+                icon: page.icon ?? undefined,
+                emoji: page.emoji ?? undefined,
+                description: page.description ?? undefined,
+                breadcrumbs: breadcrumbs.length > 0 ? breadcrumbs : undefined,
+            });
+        }
+    }
+
+    // We only cache the search index on the client if the site is public or unlisted, to avoid leaking information about private sites.
+    // For private sites, we set `Cache-Control: no-store` to prevent caching at all.
+    const shouldCacheOnClient =
+        context.site.visibility === SiteVisibility.Public ||
+        context.site.visibility === SiteVisibility.Unlisted;
+
+    return new Response(
+        JSON.stringify({
+            // We include a version number in the response to allow future changes to the format without breaking clients that might have cached the old format.
+            version: 1,
+            pages,
+        }),
+        {
+            headers: {
+                'Content-Type': 'application/json',
+                // Cache for 5 minutes on the client, 1 day on the CDN, and allow serving stale content while revalidating for 1 day
+                'Cache-Control': shouldCacheOnClient
+                    ? 'public, max-age=300, s-maxage=86400, stale-while-revalidate=86400'
+                    : 'no-store',
+            },
+        }
+    );
+}
@@ -10,6 +10,7 @@ import {
    GITBOOK_FONTS_URL,
    GITBOOK_ICONS_URL,
    GITBOOK_IMAGE_RESIZE_SIGNING_KEY,
+    GITBOOK_INTEGRATIONS_CONTENT_HOST,
    GITBOOK_INTEGRATIONS_HOST,
    GITBOOK_OAUTH_SERVER_URL,
    GITBOOK_SECRET,
@@ -32,6 +33,7 @@ export async function GET(_req: NextRequest) {
        GITBOOK_ICONS_URL,
        GITBOOK_USER_AGENT,
        GITBOOK_INTEGRATIONS_HOST,
+        GITBOOK_INTEGRATIONS_CONTENT_HOST,
        GITBOOK_DISABLE_TRACKING,

        // Secret envs
@@ -0,0 +1,89 @@
+import { describe, expect, it } from 'bun:test';
+import { normalizePathname, resolveNavigationTarget, toInSiteHref } from './navigation';
+
+const location = {
+    href: 'https://docs.example.com/guides/intro',
+    origin: 'https://docs.example.com',
+};
+
+describe('resolveNavigationTarget', () => {
+    it('resolves an absolute same-origin URL to a relative href and pathname', () => {
+        expect(
+            resolveNavigationTarget('https://docs.example.com/reference/models', location)
+        ).toEqual({ href: '/reference/models', pathname: '/reference/models' });
+    });
+
+    it('keeps the query string and section anchor in href but not in pathname', () => {
+        expect(
+            resolveNavigationTarget(
+                'https://docs.example.com/reference/models?tab=api#usage',
+                location
+            )
+        ).toEqual({ href: '/reference/models?tab=api#usage', pathname: '/reference/models' });
+    });
+
+    it('resolves a relative path against the current location', () => {
+        expect(resolveNavigationTarget('/reference/models', location)).toEqual({
+            href: '/reference/models',
+            pathname: '/reference/models',
+        });
+    });
+
+    it('rejects a URL pointing to an external site', () => {
+        const result = resolveNavigationTarget('https://evil.example.org/phishing', location);
+        expect('error' in result).toBe(true);
+    });
+});
+
+describe('toInSiteHref', () => {
+    // A docs site served under `/docs/` on a host shared with other content/sites.
+    const linker = {
+        siteBasePath: '/docs/',
+        toLinkForContent: (url: string) => {
+            const parsed = new URL(url);
+            // Mirrors the real linker: in-site iff same host AND under the site base path.
+            if (parsed.hostname === 'gitbook.com' && parsed.pathname.startsWith('/docs/')) {
+                return parsed.pathname + parsed.search + parsed.hash;
+            }
+            return url;
+        },
+    };
+
+    it('accepts an in-site absolute URL and returns a relative path', () => {
+        expect(toInSiteHref('https://gitbook.com/docs/guides/intro', linker)).toBe(
+            '/docs/guides/intro'
+        );
+    });
+
+    it('accepts an in-site relative path under the site base path', () => {
+        expect(toInSiteHref('/docs/guides/intro?x=1#y', linker)).toBe('/docs/guides/intro?x=1#y');
+    });
+
+    it('rejects another page on the same host but outside the site base path', () => {
+        // The reviewer's case: same host, different site/section.
+        expect(toInSiteHref('https://gitbook.com/pricing', linker)).toBeNull();
+        expect(toInSiteHref('/pricing', linker)).toBeNull();
+    });
+
+    it('rejects an external host', () => {
+        expect(toInSiteHref('https://evil.example.org/docs/guides', linker)).toBeNull();
+    });
+});
+
+describe('normalizePathname', () => {
+    it('strips a trailing slash', () => {
+        expect(normalizePathname('/guides/intro/')).toBe('/guides/intro');
+    });
+
+    it('keeps the root slash', () => {
+        expect(normalizePathname('/')).toBe('/');
+    });
+
+    it('decodes percent-encoding so encoded and decoded paths compare equal', () => {
+        expect(normalizePathname('/h%C3%A9llo')).toBe(normalizePathname('/héllo'));
+    });
+
+    it('treats encoded and decoded paths with a trailing slash as equal', () => {
+        expect(normalizePathname('/caf%C3%A9/')).toBe(normalizePathname('/café'));
+    });
+});
@@ -0,0 +1,76 @@
+import { withTrailingSlash } from '@/lib/paths';
+import { isExternalLink } from '../utils/link';
+
+/**
+ * Resolve a link into a same-site target to navigate to.
+ *
+ * Returns an `error` when the URL is malformed or points outside of the documentation site,
+ * so the assistant can be told it could not navigate.
+ */
+export function resolveNavigationTarget(
+    url: string,
+    location: { href: string; origin: string }
+): { href: string; pathname: string } | { error: string } {
+    let target: URL;
+    try {
+        target = new URL(url, location.href);
+    } catch {
+        return { error: `Invalid URL: ${url}` };
+    }
+
+    // Only allow navigating within the current documentation site to avoid sending the user to
+    // an external website without their consent.
+    if (isExternalLink(target.href, location.origin)) {
+        return { error: 'Cannot navigate to a page outside of this documentation site.' };
+    }
+
+    return { href: `${target.pathname}${target.search}${target.hash}`, pathname: target.pathname };
+}
+
+/**
+ * Return a site-relative href if `url` points within the current site, otherwise `null`.
+ *
+ * Unlike a bare same-origin check, this enforces the site base path, so an assistant cannot
+ * navigate the reader to another page on the same host (e.g. a marketing page, or a different
+ * docs site sharing the host such as `gitbook.com/other` or another `/url/...` proxied site).
+ */
+export function toInSiteHref(
+    url: string,
+    linker: { toLinkForContent: (url: string) => string; siteBasePath: string }
+): string | null {
+    if (URL.canParse(url)) {
+        // toLinkForContent returns a site-relative path for in-site URLs (matching host AND site
+        // base path), or the raw absolute URL otherwise.
+        const link = linker.toLinkForContent(url);
+        return URL.canParse(link) ? null : link;
+    }
+
+    // Relative path: it must live under the site base path.
+    let pathname: string;
+    let rest = '';
+    try {
+        const parsed = new URL(url, 'https://navigation.invalid');
+        pathname = parsed.pathname;
+        rest = `${parsed.search}${parsed.hash}`;
+    } catch {
+        return null;
+    }
+    return withTrailingSlash(pathname).startsWith(linker.siteBasePath)
+        ? `${pathname}${rest}`
+        : null;
+}
+
+/**
+ * Normalize a pathname so two equivalent paths compare equal regardless of percent-encoding or a
+ * trailing slash (e.g. `/h%C3%A9llo/` and `/héllo`). Used to detect when an SPA navigation has
+ * committed by comparing against `window.location.pathname`.
+ */
+export function normalizePathname(pathname: string): string {
+    let decoded = pathname;
+    try {
+        decoded = decodeURIComponent(pathname);
+    } catch {
+        // Keep the raw value if it isn't valid percent-encoding.
+    }
+    return decoded.length > 1 && decoded.endsWith('/') ? decoded.slice(0, -1) : decoded;
+}
@@ -0,0 +1,78 @@
+import { describe, expect, it } from 'bun:test';
+import { type AIChatReference, serializeReferences } from './references';
+
+describe('serializeReferences', () => {
+    it('returns an empty string when there are no references', () => {
+        expect(serializeReferences([])).toBe('');
+    });
+
+    it('serializes a single page reference as a markdown link', () => {
+        const refs: AIChatReference[] = [
+            { type: 'page', id: 'page-1', label: 'Getting started', href: '/getting-started' },
+        ];
+        const result = serializeReferences(refs);
+        expect(result).toContain('The user is referring to the following page they are reading');
+        expect(result).toContain('- [Getting started](/getting-started)');
+        expect(result.endsWith('\n\n---\n\n')).toBe(true);
+    });
+
+    it('falls back to the path when no href is provided', () => {
+        const refs: AIChatReference[] = [
+            { type: 'page', id: 'page-1', label: 'Overview', path: 'getting-started' },
+        ];
+        const result = serializeReferences(refs);
+        expect(result).toContain('- [Overview](getting-started)');
+    });
+
+    it('renders a quoted label when neither href nor path is provided', () => {
+        const refs: AIChatReference[] = [{ type: 'page', id: 'page-1', label: 'Overview' }];
+        const result = serializeReferences(refs);
+        expect(result).toContain('- "Overview"');
+        expect(result).not.toContain('](');
+    });
+
+    it('uses the plural form for multiple pages', () => {
+        const refs: AIChatReference[] = [
+            { type: 'page', id: 'page-1', label: 'One' },
+            { type: 'page', id: 'page-2', label: 'Two' },
+        ];
+        const result = serializeReferences(refs);
+        expect(result).toContain('the following pages they are reading');
+        expect(result).toContain('in the context of them');
+    });
+
+    it('serializes a single code block reference', () => {
+        const refs: AIChatReference[] = [
+            {
+                type: 'code-block',
+                id: 'code-1',
+                label: 'main.ts',
+                content: 'const a = 1;',
+                syntax: 'ts',
+            },
+        ];
+        const result = serializeReferences(refs);
+        expect(result).toContain('The user is referring to the following code block');
+        expect(result).toContain('main.ts\n```ts\nconst a = 1;\n```');
+    });
+
+    it('escapes backtick fences inside the code content', () => {
+        const refs: AIChatReference[] = [
+            { type: 'code-block', id: 'code-1', content: 'a ``` b', syntax: 'md' },
+        ];
+        const result = serializeReferences(refs);
+        expect(result).toContain('````md\na ``` b\n````');
+    });
+
+    it('groups page and code references into distinct sections', () => {
+        const refs: AIChatReference[] = [
+            { type: 'page', id: 'page-1', label: 'Quickstart' },
+            { type: 'code-block', id: 'code-1', content: 'x', syntax: 'js' },
+        ];
+        const result = serializeReferences(refs);
+        const pageIndex = result.indexOf('referring to the following page');
+        const codeIndex = result.indexOf('referring to the following code block');
+        expect(pageIndex).toBeGreaterThanOrEqual(0);
+        expect(codeIndex).toBeGreaterThan(pageIndex);
+    });
+});
@@ -0,0 +1,102 @@
+type BaseAIChatReference = {
+    id: string;
+    label?: string;
+};
+
+export type CodeBlockReference = BaseAIChatReference & {
+    type: 'code-block';
+    content: string;
+    syntax?: string;
+};
+
+export type PageReference = BaseAIChatReference & {
+    type: 'page';
+    /** Title of the page being referenced. */
+    label: string;
+    /** Path of the page, used to help the assistant identify it. */
+    path?: string;
+    /** Site-relative href of the page, used to navigate back to it from the chip. */
+    href?: string;
+};
+
+export type TextReference = BaseAIChatReference & {
+    type: 'text';
+    /** The selected text content. */
+    content: string;
+};
+
+export type AIChatReference = CodeBlockReference | PageReference | TextReference;
+
+/**
+ * Serialize the staged references into a preamble prepended to the user's message,
+ * so the assistant is informed about the context the user is referring to.
+ */
+export function serializeReferences(refs: AIChatReference[]): string {
+    if (refs.length === 0) {
+        return '';
+    }
+
+    const sections: string[] = [];
+
+    const pageRefs = refs.filter((ref): ref is PageReference => ref.type === 'page');
+    if (pageRefs.length > 0) {
+        sections.push(serializePageReferences(pageRefs));
+    }
+
+    const codeRefs = refs.filter((ref): ref is CodeBlockReference => ref.type === 'code-block');
+    if (codeRefs.length > 0) {
+        sections.push(serializeCodeBlockReferences(codeRefs));
+    }
+
+    const textRefs = refs.filter((ref): ref is TextReference => ref.type === 'text');
+    if (textRefs.length > 0) {
+        sections.push(serializeTextReferences(textRefs));
+    }
+
+    if (sections.length === 0) {
+        return '';
+    }
+
+    return `${sections.join('\n\n')}\n\n---\n\n`;
+}
+
+function serializePageReferences(refs: PageReference[]): string {
+    const plural = refs.length > 1;
+    const list = refs
+        .map((ref) => {
+            const url = ref.href ?? ref.path;
+            return url ? `- [${ref.label}](${url})` : `- "${ref.label}"`;
+        })
+        .join('\n');
+    return `The user is referring to the following page${plural ? 's' : ''} they are reading. Answer their question in the context of ${plural ? 'them' : 'it'}:\n\n${list}`;
+}
+
+function serializeCodeBlockReferences(refs: CodeBlockReference[]): string {
+    const plural = refs.length > 1;
+    const blocks = refs.map(buildCodeBlockFence).join('\n\n');
+    return `The user is referring to the following code block${plural ? 's' : ''} from the page they are reading. Answer their question about ${plural ? 'them' : 'it'}:\n\n${blocks}`;
+}
+
+function serializeTextReferences(refs: TextReference[]): string {
+    const plural = refs.length > 1;
+    const blocks = refs.map((ref) => quoteText(ref.content)).join('\n\n');
+    return `The user is referring to the following excerpt${plural ? 's' : ''} from the page they are reading. Answer their question about ${plural ? 'them' : 'it'}:\n\n${blocks}`;
+}
+
+function quoteText(content: string): string {
+    return content
+        .split('\n')
+        .map((line) => `> ${line}`)
+        .join('\n');
+}
+
+function buildCodeBlockFence(ref: CodeBlockReference): string {
+    const { label, content, syntax } = ref;
+    let max = 2;
+    for (const match of content.matchAll(/`+/g)) {
+        max = Math.max(max, match[0].length);
+    }
+    const fence = '`'.repeat(max + 1);
+    const heading = label ? `${label}\n` : '';
+    return `${heading}${fence}${syntax ?? ''}\n${content}\n${fence}`;
+}
@@ -71,13 +71,13 @@ function getDescriptionForToolCall(toolCall: AIToolCall, context: GitBookSiteCon
    }
 }

-function DescriptionForPageContentToolCall(props: {
+async function DescriptionForPageContentToolCall(props: {
    toolCall: AIToolCallGetPageContent;
    context: GitBookSiteContext;
 }) {
    const { toolCall, context } = props;

-    const language = getSpaceLanguage(context);
+    const language = await getSpaceLanguage(context);

    return (
        <p>
@@ -101,13 +101,13 @@ function DescriptionForPageContentToolCall(props: {
    );
 }

-function DescriptionForMCPToolCall(props: {
+async function DescriptionForMCPToolCall(props: {
    toolCall: AIToolCallMCP;
    context: GitBookSiteContext;
 }) {
    const { toolCall, context } = props;

-    const language = getSpaceLanguage(context);
+    const language = await getSpaceLanguage(context);

    return (
        <p>
@@ -135,7 +135,7 @@ async function DescriptionForSearchToolCall(props: {
 }) {
    const { toolCall, context } = props;

-    const language = getSpaceLanguage(context);
+    const language = await getSpaceLanguage(context);

    // Resolve all hrefs for search results in parallel
    const searchResultsWithHrefs = await Promise.all(
@@ -287,13 +287,13 @@ async function DescriptionForSearchToolCall(props: {
    );
 }

-function DescriptionForGetPagesToolCall(props: {
+async function DescriptionForGetPagesToolCall(props: {
    toolCall: AIToolCallGetPages;
    context: GitBookSiteContext;
 }) {
    const { toolCall, context } = props;

-    const language = getSpaceLanguage(context);
+    const language = await getSpaceLanguage(context);

    return (
        <p>
@@ -1,2 +1,3 @@
 export * from './types';
 export * from './chat';
+export * from './navigate';
@@ -0,0 +1,48 @@
+'use server';
+
+import { resolveContentRef, resolveStringContentRef } from '@/lib/references';
+import { fetchServerActionSiteContext, getServerActionBaseContext } from '@/lib/server-actions';
+import { traceErrorOnly } from '@/lib/tracing';
+import { toInSiteHref } from '../navigation';
+
+/**
+ * Resolve a link provided by the assistant into a path that can be navigated to within the site.
+ *
+ * The assistant references pages using the stable content-ref scheme (e.g.
+ * `/spaces/<spaceId>/pages/<pageId>`). Those URLs are not directly navigable in the published
+ * site, so we resolve them to the real site link using the site context. Any other URL is only
+ * accepted if it points within the current site, so the assistant cannot navigate the reader off
+ * the documentation site.
+ */
+export async function resolveAINavigationLink(
+    url: string
+): Promise<{ href: string } | { error: string }> {
+    return traceErrorOnly('AI.resolveAINavigationLink', async () => {
+        const baseContext = await getServerActionBaseContext();
+        const context = await fetchServerActionSiteContext(baseContext);
+
+        // The content-ref scheme operates on the path portion of the URL. Strip any origin so an
+        // absolute URL (e.g. `https://docs.example.com/spaces/.../pages/...`) is handled too.
+        let path = url;
+        if (URL.canParse(url)) {
+            const parsed = new URL(url);
+            path = `${parsed.pathname}${parsed.search}${parsed.hash}`;
+        }
+
+        const contentRef = resolveStringContentRef(path);
+        if (contentRef) {
+            const resolved = await resolveContentRef(contentRef, context);
+            if (!resolved) {
+                return { error: `Could not resolve page for ${url}` };
+            }
+            return { href: resolved.href };
+        }
+
+        // Not a content reference: only navigate to it if it points within the current site.
+        const inSiteHref = toInSiteHref(url, context.linker);
+        if (!inSiteHref) {
+            return { error: 'Cannot navigate to a page outside of this documentation site.' };
+        }
+        return { href: inSiteHref };
+    });
+}
@@ -2,7 +2,9 @@ import type { GitBookIntegrationTool } from '@gitbook/browser-types';
 import { integrationsAssistantTools } from '../Integrations';
 import { type AnyAIControlTool, getControlTools } from './controls';

-export function getTools(): (GitBookIntegrationTool | AnyAIControlTool)[] {
+export function getTools(
+    builtInTools: GitBookIntegrationTool[] = []
+): (GitBookIntegrationTool | AnyAIControlTool)[] {
    const integrationTools = integrationsAssistantTools.getState().tools;
-    return [...getControlTools(), ...integrationTools];
+    return [...getControlTools(), ...builtInTools, ...integrationTools];
 }
@@ -63,7 +63,7 @@ export function AIContextProvider(props: React.PropsWithChildren<AIConfig>): Rea
    return <AIContext.Provider value={value}>{children}</AIContext.Provider>;
 }

-function useAIConfig(): AIConfig {
+export function useAIConfig(): AIConfig {
    const ctx = React.useContext(AIContext);
    if (!ctx) {
        throw new Error('useAI must be used within AIContextProvider');
@@ -95,7 +95,7 @@ export function useAI(): AIContext {
            label: config.assistantName ?? getAIChatName(language, config.trademark),
            icon: (
                <AIChatIcon
-                    state={chat.loading ? 'thinking' : 'default'}
+                    state={chat.responding ? 'thinking' : 'default'}
                    trademark={config.trademark}
                    className="size-text-lg"
                />
@@ -2,6 +2,7 @@

 import * as zustand from 'zustand';

+import { useCurrentContent } from '@/components/hooks';
 import { useLanguage } from '@/intl/client';
 import { tString } from '@/intl/translate';
 import {
@@ -13,19 +14,22 @@ import {
 } from '@gitbook/api';
 import assertNever from 'assert-never';
 import * as React from 'react';
-import { getVisitor, useTrackEvent } from '../Insights';
-import { getSession } from '../Insights/sessions';
+import { getInsightsSession, useTrackEvent } from '../Insights';
 import { useSetSearchState } from '../Search';
+import { addRecentSearchQuery } from '../Search/recent-queries';
 import type { AnyAIControl } from './controls';
 import { ConfirmControlDef, ConfirmControlOutputSchema } from './controls/ConfirmControl';
+import { type AIChatReference, serializeReferences } from './references';
 import { type RenderAIMessageOptions, streamAIChatResponse } from './server-actions';
 import { getTools } from './tools';
 import { useAIMessageContextRef } from './useAIMessageContext';
+import { useNavigateToPageTool } from './useNavigateToPageTool';

 export type AIChatMessage = {
    role: AIMessageRole;
    content: React.ReactNode;
    query?: string;
+    references?: AIChatReference[];
    activity?: AIChatMessageActivity;
 };

@@ -82,7 +86,23 @@ export type AIChatState = {
    control: AnyAIControl | null;

    /**
-     * If true, the session is in progress.
+     * If true, the assistant is actively producing its answer — from the moment a
+     * message is sent until the `response_finish` event. It is cleared at that point
+     * (even though follow-up suggestions may still trickle in) so the input can be
+     * re-enabled. Drives the local "are we still answering" UI: the disabled input,
+     * the loading shim, and the thinking/exploring/working status.
+     */
+    responding: boolean;
+
+    /**
+     * If true, the turn is still in progress overall: from the moment a message is
+     * sent until the stream fully completes, including the follow-up suggestion
+     * phase.
+     *
+     * Unlike `responding` — which clears on `response_finish` — this stays true
+     * until the response is truly settled. It is the global busyness indicator,
+     * surfaced as `aria-busy` on the chat so that assistive tech (and visual tests)
+     * can wait for a complete, stable response.
     */
    loading: boolean;

@@ -92,13 +112,19 @@ export type AIChatState = {
     * display an error alert. Clearing the conversation will reset this flag.
     */
    error: boolean;
+
+    /**
+     * References staged on the next user message.
+     */
+    references: AIChatReference[];
 };

 export type AIChatEvent =
    | { type: 'open' }
    | { type: 'postMessage'; message: string }
    | { type: 'clear' }
-    | { type: 'close' };
+    | { type: 'close' }
+    | { type: 'focus' };

 type AIChatEventData<T extends AIChatEvent['type']> = Omit<
    Extract<AIChatEvent, { type: T }>,
@@ -116,6 +142,14 @@ export type AIChatController = {
    postMessage: (input: { message: string }) => void;
    /** Clear the conversation */
    clear: () => void;
+    /** Stage a reference on the next message */
+    addReference: (ref: AIChatReference) => string;
+    /** Remove a staged reference */
+    removeReference: (id: string) => void;
+    /** Clear all staged references */
+    clearReferences: () => void;
+    /** Focus the chat input */
+    focus: () => void;
    /** Register an event listener */
    on: <T extends AIChatEvent['type']>(
        event: T,
@@ -134,9 +168,11 @@ const globalState = zustand.create<AIChatState>(() => {
        query: null,
        followUpSuggestions: [],
        control: null,
+        responding: false,
        loading: false,
        error: false,
        initialQuery: null,
+        references: [],
    };
 });

@@ -171,8 +207,13 @@ export function AIChatProvider(props: {
    const messageContextRef = useAIMessageContextRef();
    const trackEvent = useTrackEvent();
    const setSearchState = useSetSearchState();
+    const { siteSpaceId } = useCurrentContent();
    const language = useLanguage();

+    // Built-in tools exposed to the assistant (e.g. navigating to a page). The tool has a stable
+    // identity, so it can be referenced directly from the streaming callback.
+    const navigateToPageTool = useNavigateToPageTool();
+
    // Event listeners storage
    const eventsRef = React.useRef<Map<AIChatEvent['type'], AIChatEventListener[]>>(new Map());

@@ -212,6 +253,8 @@ export function AIChatProvider(props: {
        async (input: {
            /** Text message to send to the AI backend */
            message?: string;
+            /** User-typed prompt; compared against state.query to abort stale streams */
+            userQuery?: string;
            /** Tool call to send to the AI backend */
            toolCall?: AIToolCallResult;
        }) => {
@@ -220,6 +263,7 @@ export function AIChatProvider(props: {
                    ...state,
                    followUpSuggestions: [],
                    control: null,
+                    responding: true,
                    loading: true,
                    error: false,
                    messages: [
@@ -233,9 +277,19 @@ export function AIChatProvider(props: {
                };
            });

+            // A stream becomes stale once a newer turn (or a clear) has replaced its
+            // query. Because `responding` clears on `response_finish` — before follow-up
+            // suggestions finish streaming — the user can start a new turn while this one
+            // is still wrapping up. A stale stream must not mutate the shared
+            // loading/responding state, which now belongs to the active turn; otherwise
+            // it would make the UI look idle mid-response. (`userQuery` is only set for
+            // user-initiated turns, not tool-call continuations.)
+            const isSuperseded = () =>
+                !!input.userQuery && globalState.getState().query !== input.userQuery;
+
            // Execute a tool call
            const executeToolCall = async (event: AIStreamResponseToolCallPending) => {
-                const tools = getTools();
+                const tools = getTools([navigateToPageTool]);
                const toolDef = tools.find((tool) => tool.name === event.toolCall.tool);

                if (!toolDef || !('execute' in toolDef)) {
@@ -271,16 +325,13 @@ export function AIChatProvider(props: {

            let toolToExecute: AIStreamResponseToolCallPending | null = null;
            try {
-                const tools = getTools();
+                const tools = getTools([navigateToPageTool]);
                const stream = await streamAIChatResponse({
                    message: input.message,
                    toolCall: input.toolCall,
                    messageContext: messageContextRef.current,
                    previousResponseId: globalState.getState().responseId ?? undefined,
-                    session: {
-                        sessionId: getSession().id,
-                        visitorId: (await getVisitor()).deviceId,
-                    },
+                    session: await getInsightsSession(),
                    tools: tools.map((tool) => ({
                        name: tool.name,
                        description: tool.description,
@@ -298,8 +349,8 @@ export function AIChatProvider(props: {
                for await (const data of stream) {
                    if (!data) continue;

-                    if (input.message && globalState.getState().query !== input.message) {
-                        // Chat was cleared, stop processing the stream
+                    if (isSuperseded()) {
+                        // Chat was cleared or a newer turn started; stop processing.
                        break;
                    }

@@ -310,9 +361,9 @@ export function AIChatProvider(props: {
                            globalState.setState((state) => ({
                                ...state,
                                responseId: event.response.id ?? null,
-                                // Mark as not loading when the response is finished
+                                // Mark as not responding when the response is finished
                                // Even if the stream might continue as we receive 'response_followup_suggestion'
-                                loading: false,
+                                responding: false,
                                error: false,
                            }));
                            break;
@@ -430,23 +481,40 @@ export function AIChatProvider(props: {
                    }));
                }

-                // Execute the tool call if it doesn't require confirmation
+                // If a newer turn replaced this one while we were finishing (e.g.
+                // streaming follow-up suggestions after `response_finish`), abandon this
+                // stale stream without executing leftover tools or clearing the shared
+                // loading/responding state, which now belongs to the active turn.
+                if (isSuperseded()) {
+                    return;
+                }
+
+                // Execute the tool call if it doesn't require confirmation.
+                // When a tool call (or control) keeps the turn going, `loading`
+                // stays true: either the recursive `streamResponse` will clear it
+                // when its stream settles, or it is cleared below once the loop ends
+                // (e.g. while waiting on a user confirmation control).
                if (toolToExecute) {
                    await executeToolCall(toolToExecute);
                } else {
                    globalState.setState((state) => ({
                        ...state,
+                        responding: false,
                        loading: false,
                        error: false,
                    }));
                }
            } catch (error) {
                console.error('Error streaming AI response', error);
-                globalState.setState((state) => ({
-                    ...state,
-                    loading: false,
-                    error: true,
-                }));
+                // Don't surface a stale stream's error onto the active turn.
+                if (!isSuperseded()) {
+                    globalState.setState((state) => ({
+                        ...state,
+                        responding: false,
+                        loading: false,
+                        error: true,
+                    }));
+                }
            }
        },
        [
@@ -455,20 +523,32 @@ export function AIChatProvider(props: {
            renderMessageOptions?.withToolCalls,
            renderMessageOptions?.asEmbeddable,
            language,
+            navigateToPageTool,
        ]
    );

    // Post a message to the AI chat
    const onPostMessage = React.useCallback(
        async (input: { message: string }) => {
-            const { query, messages, control } = globalState.getState();
+            const { query, messages, control, references, responding } = globalState.getState();

            if (control) {
                throw new Error("We can't post a message when a control is active");
            }

+            // Ignore duplicates while a previous turn is still streaming
+            if (responding) {
+                return;
+            }
+
+            const wireMessage = `${serializeReferences(references)}${input.message}`;
+
            // For first message, update the ask parameter in URL
            if (messages.length === 0) {
+                if (siteSpaceId) {
+                    addRecentSearchQuery(siteSpaceId, input.message, 'ask');
+                }
+
                setSearchState((prev) => ({
                    ask: input.message,
                    query: prev?.query ?? null,
@@ -479,8 +559,9 @@ export function AIChatProvider(props: {

            notify(eventsRef.current.get('postMessage'), { message: input.message });

-            if (query === input.message) {
+            if (query === input.message && references.length === 0) {
                // Return early if the message is the same as the previous message
+                // (unless new references are staged, which change the payload)
                globalState.setState((state) => ({
                    ...state,
                    opened: true,
@@ -500,25 +581,28 @@ export function AIChatProvider(props: {
                            role: AIMessageRole.User,
                            content: input.message,
                            query: input.message,
+                            references,
                        },
                    ],
                    query: input.message,
                    followUpSuggestions: [],
-                    loading: true,
+                    responding: true,
                    error: false,
                    initialQuery: state.initialQuery ?? input.message,
+                    references: [],
                };
            });

-            streamResponse({ message: input.message });
+            streamResponse({ message: wireMessage, userQuery: input.message });
        },
-        [setSearchState, trackEvent, streamResponse, language]
+        [setSearchState, siteSpaceId, trackEvent, streamResponse]
    );

    // Clear the conversation and reset ask parameter
    const onClear = React.useCallback(() => {
        globalState.setState((state) => ({
            opened: state.opened,
+            responding: false,
            loading: false,
            messages: [],
            query: null,
@@ -527,6 +611,7 @@ export function AIChatProvider(props: {
            responseId: null,
            error: false,
            initialQuery: null,
+            references: [],
        }));

        // Reset ask parameter to empty string (keeps chat open but clears content)
@@ -538,6 +623,44 @@ export function AIChatProvider(props: {
        }));
    }, [setSearchState]);

+    const onAddReference = React.useCallback((ref: AIChatReference) => {
+        globalState.setState((state) => {
+            if (state.references.some((existingRef) => existingRef.id === ref.id)) {
+                return state;
+            }
+            return {
+                ...state,
+                references: [...state.references, ref],
+            };
+        });
+        return ref.id;
+    }, []);
+
+    const onRemoveReference = React.useCallback((id: string) => {
+        globalState.setState((state) => {
+            if (!state.references.some((ref) => ref.id === id)) {
+                return state;
+            }
+            return {
+                ...state,
+                references: state.references.filter((ref) => ref.id !== id),
+            };
+        });
+    }, []);
+
+    const onClearReferences = React.useCallback(() => {
+        globalState.setState((state) => {
+            if (state.references.length === 0) {
+                return state;
+            }
+            return { ...state, references: [] };
+        });
+    }, []);
+
+    const onFocus = React.useCallback(() => {
+        notify(eventsRef.current.get('focus'), {});
+    }, []);
+
    const onEvent = React.useCallback(
        <T extends AIChatEvent['type']>(
            event: T,
@@ -563,9 +686,23 @@ export function AIChatProvider(props: {
            close: onClose,
            clear: onClear,
            postMessage: onPostMessage,
+            addReference: onAddReference,
+            removeReference: onRemoveReference,
+            clearReferences: onClearReferences,
+            focus: onFocus,
            on: onEvent,
        };
-    }, [onOpen, onClose, onClear, onPostMessage, onEvent]);
+    }, [
+        onOpen,
+        onClose,
+        onClear,
+        onPostMessage,
+        onAddReference,
+        onRemoveReference,
+        onClearReferences,
+        onFocus,
+        onEvent,
+    ]);

    return (
        <AIChatControllerContext.Provider value={controller}>
@@ -595,7 +732,7 @@ export function getAIChatStatus(chat: AIChatState): AIChatStatus {
        return 'confirm';
    }

-    if (chat.loading) {
+    if (chat.responding) {
        const latestMessage = getLatestAssistantMessage(chat.messages);
        const phase = latestMessage?.activity?.currentPhase;
        switch (phase) {
@@ -0,0 +1,117 @@
+'use client';
+
+import { useLanguage } from '@/intl/client';
+import { tString } from '@/intl/translate';
+import type { AIToolDefinition } from '@gitbook/api';
+import type { GitBookIntegrationTool } from '@gitbook/browser-types';
+import { useRouter } from 'next/navigation';
+import * as React from 'react';
+import { z } from 'zod';
+import { zodToJsonSchema } from 'zod-to-json-schema';
+import { NavigationStatusContext } from '../hooks';
+import { normalizePathname, resolveNavigationTarget } from './navigation';
+import { resolveAINavigationLink } from './server-actions';
+
+const NavigateToPageInputSchema = z.object({
+    url: z
+        .string()
+        .describe(
+            'The URL of the documentation page to open. Must be a page within this documentation site (the same URL you would use to link to the page). Can include a section anchor (e.g. #section).'
+        ),
+});
+
+/**
+ * Resolve once the SPA navigation to `pathname` has committed (the browser URL reflects it), or
+ * after a timeout. App Router updates `window.location` only when the navigation commits, so this
+ * lets the tool hold its turn until the user is actually on the new page — after which the
+ * tool-result server action's router refresh can no longer cancel the navigation.
+ */
+function waitForNavigationCommit(pathname: string): Promise<boolean> {
+    const target = normalizePathname(pathname);
+    if (normalizePathname(window.location.pathname) === target) {
+        return Promise.resolve(true);
+    }
+    return new Promise((resolve) => {
+        const startedAt = Date.now();
+        const check = () => {
+            if (normalizePathname(window.location.pathname) === target) {
+                resolve(true);
+            } else if (Date.now() - startedAt > 3000) {
+                resolve(false);
+            } else {
+                requestAnimationFrame(check);
+            }
+        };
+        requestAnimationFrame(check);
+    });
+}
+
+/**
+ * Build the built-in `navigateToPage` tool exposed to the assistant.
+ *
+ * The tool opens a page within the current documentation site without confirmation. It navigates
+ * instantly with the Next.js router (adding a browser history entry, so the user can navigate
+ * back) and waits for the navigation to commit before reporting back, so the assistant's
+ * follow-up does not cancel the navigation.
+ */
+export function useNavigateToPageTool(): GitBookIntegrationTool {
+    const router = useRouter();
+    const language = useLanguage();
+    const { onNavigationClick } = React.useContext(NavigationStatusContext);
+
+    // The tool object is memoized once, so read the latest values from a ref at call time.
+    const ref = React.useRef({ router, language, onNavigationClick });
+    React.useEffect(() => {
+        ref.current = { router, language, onNavigationClick };
+    });
+
+    return React.useMemo<GitBookIntegrationTool>(
+        () => ({
+            name: 'navigateToPage',
+            description:
+                'Navigate the user to a page in the documentation. The page opens instantly without asking for confirmation, so only use it when the user clearly wants to be taken to a specific page. Provide the URL of the page within this documentation site.',
+            inputSchema: zodToJsonSchema(
+                NavigateToPageInputSchema as any
+            ) as AIToolDefinition['inputSchema'],
+            execute: async (input) => {
+                const { router, language, onNavigationClick } = ref.current;
+                const { url } = NavigateToPageInputSchema.parse(input);
+
+                // The assistant references pages using the stable content-ref scheme
+                // (e.g. `/spaces/<id>/pages/<id>`). Resolve it server-side to the real site link.
+                const resolved = await resolveAINavigationLink(url);
+                const target =
+                    'error' in resolved
+                        ? resolved
+                        : resolveNavigationTarget(resolved.href, window.location);
+
+                if ('error' in target) {
+                    return {
+                        output: { error: target.error },
+                        summary: {
+                            icon: 'triangle-exclamation',
+                            text: tString(language, 'ai_chat_tools_navigate_failed'),
+                        },
+                    };
+                }
+
+                onNavigationClick(target.href);
+                router.push(target.href);
+                const committed = await waitForNavigationCommit(target.pathname);
+                if (!committed) {
+                    // biome-ignore lint/suspicious/noConsole: surfaces a navigation that never committed
+                    console.warn(`navigateToPage: navigation to ${target.href} did not commit`);
+                }
+
+                return {
+                    output: { navigated: true, url: target.href },
+                    summary: {
+                        icon: 'book-open',
+                        text: tString(language, 'ai_chat_tools_navigated_to_page'),
+                    },
+                };
+            },
+        }),
+        []
+    );
+}
@@ -31,9 +31,11 @@ import { ScrollContainer } from '../primitives/ScrollContainer';
 import { SideSheet } from '../primitives/SideSheet';
 import { AIChatControl } from './AIChatControl';
 import { AIChatControlButton } from './AIChatControlButton';
+import { AIChatExpandButton } from './AIChatExpandButton';
 import { AIChatIcon } from './AIChatIcon';
 import { AIChatInput } from './AIChatInput';
 import { AIChatMessages } from './AIChatMessages';
+import { AIChatResizeHandle } from './AIChatResizeHandle';
 import AIChatSuggestedQuestions from './AIChatSuggestedQuestions';

 export function AIChat() {
@@ -83,12 +85,14 @@ export function AIChat() {
                }
            }}
            withOverlay={true}
+            data-ai-chat
            className={tcls(
-                'ai-chat mx-auto ml-8 not-hydrated:hidden w-96 transition-[width] duration-300 ease-quint lg:max-xl:w-80'
+                'ai-chat mx-auto ml-8 not-hydrated:hidden w-96 transition-[width] duration-300 ease-quint lg:w-(--ai-chat-width)'
            )}
        >
-            <EmbeddableFrame className="relative shrink-0 border-tint-subtle border-l to-tint-base">
-                <EmbeddableFrameMain data-testid="ai-chat">
+            <AIChatResizeHandle />
+            <EmbeddableFrame className="relative w-full shrink-0 border-tint-subtle border-l to-tint-base">
+                <EmbeddableFrameMain data-testid="ai-chat" aria-busy={chat.loading}>
                    <EmbeddableFrameHeader className="not-embed:px-4">
                        <AIChatDynamicIcon trademark={config.trademark} />
                        <EmbeddableFrameHeaderMain>
@@ -99,6 +103,7 @@ export function AIChat() {
                        </EmbeddableFrameHeaderMain>
                        <EmbeddableFrameButtons>
                            <AIChatControlButton />
+                            <AIChatExpandButton />
                            <Button
                                onClick={() => chatController.close()}
                                iconOnly
@@ -225,7 +230,7 @@ export function AIChatBody(props: {
    return (
        <>
            <ScrollContainer
-                className="min-h-[20%] shrink grow animate-fade-in-slow [container-type:size]"
+                className="min-h-[20%] max-w-full shrink grow animate-fade-in-slow [container-type:size]"
                contentClassName="py-4 gutter-stable flex flex-col gap-4 not-embed:px-4 [scroll-behavior:smooth]"
                orientation="vertical"
                trailing={{ fade: false, button: true }}
@@ -280,8 +285,8 @@ export function AIChatBody(props: {

                {chat.control ? <AIChatControl control={chat.control} /> : null}
                <AIChatInput
-                    loading={chat.loading}
-                    disabled={chat.loading || chat.error}
+                    responding={chat.responding}
+                    disabled={chat.responding || chat.error}
                    onSubmit={(value) => {
                        chatController.postMessage({ message: value });
                    }}
@@ -1,12 +1,58 @@
 'use client';
+import type { ReactNode } from 'react';
+
 import { useLanguage } from '@/intl/client';
-import { t } from '@/intl/translate';
+import { t, tString } from '@/intl/translate';
+import { tcls } from '@/lib/tailwind';
 import type { Assistant } from '../AI';
 import { useIsMobile } from '../hooks/useIsMobile';
 import { Button } from '../primitives';
 import { KeyboardShortcut } from '../primitives/KeyboardShortcut';

-const MOBILE_BREAKPOINT = 672; // 42rem, equal to Tailwind's @max-2xl container breakpoint
+const MOBILE_BREAKPOINT = 688; // 43rem, equal to Tailwind's @max-2xl container breakpoint
+
+/**
+ * Button visual for an AI assistant in the header.
+ */
+export function AIChatButtonView(props: {
+    icon: ReactNode;
+    label: string;
+    onClick?: () => void;
+    showLabel?: boolean;
+    withShortcut?: boolean;
+    inert?: boolean;
+}) {
+    const { icon, label, onClick, showLabel = true, withShortcut = true, inert = false } = props;
+    const language = useLanguage();
+    const isMobile = useIsMobile(MOBILE_BREAKPOINT, '[data-gb-header-content]');
+
+    return (
+        <Button
+            icon={icon}
+            data-testid="ai-chat-button"
+            iconOnly={!showLabel || isMobile}
+            size="medium"
+            variant="header"
+            label={
+                <div className="flex items-center gap-2">
+                    {t(language, 'ai_chat_ask', label)}
+                    {withShortcut ? (
+                        <KeyboardShortcut
+                            keys={['mod', 'i']}
+                            className="border-tint-11 text-tint-1"
+                        />
+                    ) : null}
+                </div>
+            }
+            aria-label={tString(language, 'ai_chat_ask', label)}
+            onClick={inert ? undefined : onClick}
+            tabIndex={inert ? -1 : undefined}
+            className={tcls(inert ? 'pointer-events-none select-none' : null)}
+        >
+            {showLabel ? t(language, 'ask') : null}
+        </Button>
+    );
+}

 /**
 * Button to open/close the AI chat.
@@ -17,30 +63,14 @@ export function AIChatButton(props: {
    withShortcut?: boolean;
 }) {
    const { assistant, showLabel = true, withShortcut = true } = props;
-    const language = useLanguage();
-    const isMobile = useIsMobile(MOBILE_BREAKPOINT, '[data-gb-header-content]');

    return (
-        <Button
+        <AIChatButtonView
            icon={assistant.icon}
-            data-testid="ai-chat-button"
-            iconOnly={!showLabel || isMobile}
-            size="medium"
-            variant="header"
-            label={
-                <div className="flex items-center gap-2">
-                    {t(language, 'ai_chat_ask', assistant.label)}
-                    {withShortcut ? (
-                        <KeyboardShortcut
-                            keys={['mod', 'i']}
-                            className="border-tint-11 text-tint-1"
-                        />
-                    ) : null}
-                </div>
-            }
+            label={assistant.label}
            onClick={() => assistant.open()}
-        >
-            {showLabel ? t(language, 'ask') : null}
-        </Button>
+            showLabel={showLabel}
+            withShortcut={withShortcut}
+        />
    );
 }
@@ -0,0 +1,35 @@
+'use client';
+
+import { tString, useLanguage } from '@/intl/client';
+import { Icon } from '@gitbook/icons';
+import { Button } from '../primitives';
+import { useAIChatWidthStore, useIsAIChatMaxWidth } from './useAIChatWidthStore';
+
+export function AIChatExpandButton() {
+    const language = useLanguage();
+    const toggleWidth = useAIChatWidthStore((state) => state.toggleWidth);
+    const isMaxWidth = useIsAIChatMaxWidth();
+
+    return (
+        <Button
+            onClick={toggleWidth}
+            iconOnly
+            icon={
+                <Icon
+                    icon={
+                        isMaxWidth
+                            ? 'arrow-down-left-and-arrow-up-right-to-center'
+                            : 'arrow-up-right-and-arrow-down-left-from-center'
+                    }
+                    className="scale-90"
+                />
+            }
+            label={tString(
+                language,
+                isMaxWidth ? 'ai_chat_collapse_panel' : 'ai_chat_expand_panel'
+            )}
+            variant="blank"
+            className="max-lg:hidden"
+        />
+    );
+}
@@ -3,27 +3,29 @@ import { tcls } from '@/lib/tailwind';
 import { Icon } from '@gitbook/icons';
 import { useEffect, useRef } from 'react';
 import { useHotkeys } from 'react-hotkeys-hook';
-import { useAIChatState } from '../AI/useAIChat';
+import { useAIChatController, useAIChatState } from '../AI/useAIChat';
 import { HoverCard, HoverCardRoot, HoverCardTrigger } from '../primitives';
 import { Input } from '../primitives/Input';
+import { AIChatReferenceChips } from './AIChatReferenceChips';

 export function AIChatInput(props: {
    disabled?: boolean;
    /**
     * When true, the input is disabled
     */
-    loading: boolean;
+    responding: boolean;
    onSubmit: (value: string) => void;
 }) {
-    const { onSubmit, disabled, loading } = props;
+    const { onSubmit, disabled, responding } = props;

    const language = useLanguage();
    const chat = useAIChatState();
+    const chatController = useAIChatController();

    const inputRef = useRef<HTMLTextAreaElement>(null);

    useEffect(() => {
-        if (chat.opened && !disabled && !loading) {
+        if (chat.opened && !disabled && !responding) {
            // Add a small delay to ensure the input is rendered before focusing
            // This fixes inconsistent focus behaviour across browsers
            const timeout = setTimeout(() => {
@@ -32,7 +34,14 @@ export function AIChatInput(props: {

            return () => clearTimeout(timeout);
        }
-    }, [disabled, loading, chat.opened]);
+    }, [disabled, responding, chat.opened]);
+
+    // Explicit focus requests (e.g. clicking "Ask" while the chat is already open).
+    useEffect(() => {
+        return chatController.on('focus', () => {
+            inputRef.current?.focus();
+        });
+    }, [chatController]);

    useHotkeys(
        'mod+i',
@@ -42,6 +51,9 @@ export function AIChatInput(props: {
        },
        {
            enableOnFormTags: true,
+            // Match the logical character so Dvorak ⌘-C (physical "I" key) copies
+            // instead of focusing the Assistant input. RND-11340.
+            ignoreEventWhen: (e) => e.key.toLowerCase() !== 'i',
        }
    );

@@ -66,16 +78,23 @@ export function AIChatInput(props: {
            rows={1}
            maxLength={2048}
            keyboardShortcut={
-                !disabled && !loading
+                !disabled && !responding
                    ? {
                          keys: ['mod', 'i'],
                          className: 'bg-tint-base group-focus-within/input:hidden',
                      }
                    : undefined
            }
-            disabled={disabled || loading || chat.control !== null}
-            aria-busy={loading}
+            disabled={disabled || responding || chat.control !== null}
+            aria-busy={responding}
            ref={inputRef}
+            header={
+                <AIChatReferenceChips
+                    references={chat.references}
+                    onRemove={chatController.removeReference}
+                    disabled={responding || disabled}
+                />
+            }
            trailing={
                <HoverCardRoot openDelay={500}>
                    <HoverCard
@@ -2,6 +2,7 @@ import { useLanguage } from '@/intl/client';
 import { t, tString } from '@/intl/translate';
 import { tcls } from '@/lib/tailwind';
 import { AIMessageRole } from '@gitbook/api';
+import { Fragment } from 'react';
 import {
    type AIChatController,
    type AIChatMessage,
@@ -11,6 +12,7 @@ import {
 import { ToggleChevron } from '../primitives';
 import { Button } from '../primitives/Button';
 import { Collapsible, CollapsibleTrigger } from '../primitives/Collapsible';
+import { AIChatReferenceChips } from './AIChatReferenceChips';
 import { AIResponseFeedback } from './AIResponseFeedback';
 import { AIChatFollowupSuggestions } from './AiChatFollowupSuggestions';

@@ -20,7 +22,7 @@ export function AIChatMessages(props: {
 }) {
    const { chat, chatController } = props;
    const status = getAIChatStatus(chat);
-    const showLoadingShim = chat.loading && status !== 'working' && status !== 'done';
+    const showLoadingShim = chat.responding && status !== 'working' && status !== 'done';

    // Group messages: user messages start a new group, all following messages until next user message belong to that group
    type MessageGroup = { message: AIChatMessage; originalIndex: number };
@@ -49,6 +51,29 @@ export function AIChatMessages(props: {

    return messageGroups.map((group, groupIndex) => {
        const isLastGroup = group === messageGroups[messageGroups.length - 1];
+
+        const userItems = group.filter(({ message }) => message.role === AIMessageRole.User);
+        const assistantItems = group.filter(
+            ({ message }) => message.role === AIMessageRole.Assistant
+        );
+
+        // Each client-side tool call splits a turn into a separate assistant message, so without
+        // aggregating here every tool would render its own "Explored with 1 tool" expandable.
+        // We collapse the whole assistant run behind a single expandable instead, reusing the
+        // commentary (hidden) vs final-answer (visible) distinction from AIMessageView.
+        const toolCount = assistantItems.reduce(
+            (acc, { message }) => acc + (message.activity?.toolCount ?? 0),
+            0
+        );
+        const hasCommentary =
+            assistantItems.some(({ message }) => message.activity?.hasCommentary) || toolCount > 0;
+        const hasFinalAnswer =
+            assistantItems.some(({ message }) => message.activity?.hasFinalAnswer) || !isLastGroup;
+
+        const firstAssistantIndex = assistantItems.at(0)?.originalIndex ?? -1;
+        const lastAssistantIndex = assistantItems.at(-1)?.originalIndex ?? -1;
+        const isLastMessage = lastAssistantIndex === chat.messages.length - 1;
+
        return (
            <div
                key={groupIndex}
@@ -61,52 +86,60 @@ export function AIChatMessages(props: {
                )}
                style={{ animationDelay: '.2s' }}
            >
-                {group.map(({ message, originalIndex }) => {
-                    const isLastMessage = originalIndex === chat.messages.length - 1;
-                    const toolCount = message.activity?.toolCount ?? 0;
-                    const hasCommentary =
-                        (message.activity?.hasCommentary ?? false) || toolCount > 0;
-                    const hasFinalAnswer =
-                        (message.activity?.hasFinalAnswer ?? false) || !isLastMessage;
-
-                    return (
-                        <Collapsible
-                            open={!hasFinalAnswer}
-                            disabled={!hasFinalAnswer}
-                            key={originalIndex}
-                            data-testid={
-                                message.role === AIMessageRole.User
-                                    ? 'ai-chat-message-user'
-                                    : 'ai-chat-message-assistant'
-                            }
+                {userItems.map(({ message, originalIndex }) => (
+                    <Fragment key={originalIndex}>
+                        {message.references?.length ? (
+                            <div className="flex max-w-[80%] origin-top-right justify-end self-end">
+                                <AIChatReferenceChips references={message.references} />
+                            </div>
+                        ) : null}
+                        <div
+                            data-testid="ai-chat-message-user"
                            id={`message-${originalIndex}`}
                            className={tcls(
                                'flex flex-col gap-2',
                                'break-words',
                                'group/message',
                                'animate-blur-in-slow',
-                                message.role === AIMessageRole.User
-                                    ? 'mb-4 max-w-[80%] origin-top-right self-end circular-corners:rounded-2xl rounded-corners:rounded-md bg-tint px-4 py-2'
-                                    : 'origin-top-left text-tint-strong',
-                                isLastMessage && message.role === AIMessageRole.Assistant
-                                    ? 'grow'
-                                    : ''
+                                'mb-4 max-w-[80%] origin-top-right self-end circular-corners:rounded-2xl rounded-corners:rounded-md bg-tint px-4 py-2'
                            )}
                            style={{
                                animationDelay: `${Math.min(originalIndex * 0.1, 0.6)}s`,
                            }}
                        >
-                            {message.role === AIMessageRole.Assistant &&
-                            hasCommentary &&
-                            hasFinalAnswer ? (
-                                <CollapsibleTrigger asChild>
-                                    <Button
-                                        variant="blank"
-                                        size="small"
-                                        label={tString(language, 'ai_chat_view_activity')}
-                                        className="-mx-3 -my-1.5 group/dropdown animate-blur-in-display-slow self-start"
-                                    >
-                                        <div className="flex items-center gap-2">
+                            {message.content}
+                        </div>
+                    </Fragment>
+                ))}
+
+                {assistantItems.length > 0 ? (
+                    <Collapsible
+                        open={!hasFinalAnswer}
+                        disabled={!hasFinalAnswer}
+                        data-testid="ai-chat-message-assistant"
+                        id={`message-${firstAssistantIndex}`}
+                        className={tcls(
+                            'flex flex-col gap-2',
+                            'break-words',
+                            'group/message',
+                            'animate-blur-in-slow',
+                            'origin-top-left text-tint-strong',
+                            isLastMessage ? 'grow' : ''
+                        )}
+                        style={{
+                            animationDelay: `${Math.min(firstAssistantIndex * 0.1, 0.6)}s`,
+                        }}
+                    >
+                        {hasCommentary && hasFinalAnswer ? (
+                            <CollapsibleTrigger asChild>
+                                <Button
+                                    variant="blank"
+                                    size="small"
+                                    label={tString(language, 'ai_chat_view_activity')}
+                                    className="-mx-3 -my-1.5 group/dropdown animate-blur-in-display-slow self-start"
+                                >
+                                    <div className="flex items-center gap-2">
+                                        <span data-testid="ai-chat-activity-summary">
                                            {toolCount > 0
                                                ? t(
                                                      language,
@@ -120,50 +153,58 @@ export function AIChatMessages(props: {
                                                      )
                                                  )
                                                : t(language, 'ai_chat_explored')}
-                                            <ToggleChevron orientation="right-to-down" />
-                                        </div>
-                                    </Button>
-                                </CollapsibleTrigger>
-                            ) : null}
+                                        </span>
+                                        <ToggleChevron orientation="right-to-down" />
+                                    </div>
+                                </Button>
+                            </CollapsibleTrigger>
+                        ) : null}

-                            {message.content}
+                        {assistantItems.map(({ message, originalIndex }) => (
+                            <Fragment key={originalIndex}>{message.content}</Fragment>
+                        ))}

-                            {isLastMessage && message.role === AIMessageRole.Assistant ? (
-                                <div
-                                    className={tcls(
-                                        'mt-4 flex w-full shrink-0 flex-col gap-2 overflow-hidden starting:opacity-0 transition-all transition-discrete duration-300',
-                                        showLoadingShim
-                                            ? 'max-h-48 opacity-11'
-                                            : 'pointer-events-none max-h-0 opacity-0'
-                                    )}
-                                >
-                                    <HoldMessage className={message.content ? 'hidden' : ''} />
-                                    <LoadingSkeleton />
-                                </div>
-                            ) : null}
+                        {isLastMessage ? (
+                            <div
+                                className={tcls(
+                                    'mt-4 flex w-full shrink-0 flex-col gap-2 overflow-hidden starting:opacity-0 transition-all transition-discrete duration-300',
+                                    showLoadingShim
+                                        ? 'max-h-48 opacity-11'
+                                        : 'pointer-events-none max-h-0 opacity-0'
+                                )}
+                            >
+                                <HoldMessage
+                                    className={
+                                        assistantItems.some(({ message }) => message.content)
+                                            ? 'hidden'
+                                            : ''
+                                    }
+                                />
+                                <LoadingSkeleton />
+                            </div>
+                        ) : null}

-                            {isLastMessage ? (
-                                <>
-                                    {!chat.loading &&
-                                    !chat.error &&
-                                    chat.query &&
-                                    chat.responseId &&
-                                    !chat.control ? (
-                                        <AIResponseFeedback
-                                            responseId={chat.responseId}
-                                            query={chat.query}
-                                            className="-ml-1.5 -mt-4 mb-2"
-                                        />
-                                    ) : null}
-                                    <AIChatFollowupSuggestions
-                                        chat={chat}
-                                        chatController={chatController}
+                        {isLastMessage ? (
+                            <>
+                                {!chat.responding &&
+                                !chat.error &&
+                                chat.query &&
+                                chat.responseId &&
+                                !chat.control ? (
+                                    <AIResponseFeedback
+                                        responseId={chat.responseId}
+                                        query={chat.query}
+                                        className="-ml-1.5 -mt-4 mb-2"
                                    />
-                                </>
-                            ) : null}
-                        </Collapsible>
-                    );
-                })}
+                                ) : null}
+                                <AIChatFollowupSuggestions
+                                    chat={chat}
+                                    chatController={chatController}
+                                />
+                            </>
+                        ) : null}
+                    </Collapsible>
+                ) : null}
            </div>
        );
    });
@@ -0,0 +1,126 @@
+'use client';
+
+import { Icon, type IconName } from '@gitbook/icons';
+import assertNever from 'assert-never';
+
+import { tcls } from '@/lib/tailwind';
+import type { AIChatReference } from '../AI/references';
+import { Link } from '../primitives';
+
+const triggerClassName =
+    'inline-flex min-w-0 items-center gap-1.5 circular-corners:rounded-2xl rounded-corners:rounded-sm py-0.5 pr-1 pl-1.5 text-tint no-underline transition hover:bg-tint hover:text-tint';
+
+export function AIChatReferenceChips(props: {
+    references: AIChatReference[];
+    onRemove?: (id: string) => void;
+    disabled?: boolean;
+}) {
+    const { references, onRemove, disabled } = props;
+
+    if (references.length === 0) {
+        return null;
+    }
+
+    return (
+        <div className="flex max-w-full flex-wrap gap-1.5">
+            {references.map((ref) => {
+                const content = (
+                    <>
+                        <Icon icon={getReferenceIcon(ref)} className="size-3 shrink-0 opacity-7" />
+                        <span
+                            className={tcls(
+                                'min-w-0 truncate',
+                                ref.type === 'code-block' && 'font-mono'
+                            )}
+                        >
+                            {ref.type === 'text' ? ref.content : ref.label}
+                        </span>
+                    </>
+                );
+
+                return (
+                    <div
+                        key={ref.id}
+                        className="inline-flex max-w-52 items-center gap-1 circular-corners:rounded-2xl rounded-corners:rounded-md straight-corners:rounded-xs border border-tint-subtle bg-tint-base px-0.5 py-0.5 text-tint text-xs leading-none"
+                    >
+                        {ref.type === 'page' && ref.href ? (
+                            // A page reference may be clicked from anywhere: render a link so it
+                            // navigates back to the page (and supports cmd/ctrl-click to open in a
+                            // new tab).
+                            <Link
+                                href={ref.href}
+                                prefetch={false}
+                                className={triggerClassName}
+                                onClick={(event) => event.stopPropagation()}
+                            >
+                                {content}
+                            </Link>
+                        ) : ref.type === 'text' ? (
+                            // A text selection has no persistent DOM anchor to navigate to, so the
+                            // excerpt is shown as plain (non-interactive) content.
+                            <span className={triggerClassName}>{content}</span>
+                        ) : (
+                            <button
+                                type="button"
+                                onClick={(event) => {
+                                    event.stopPropagation();
+                                    focusReference(ref);
+                                }}
+                                className={triggerClassName}
+                            >
+                                {content}
+                            </button>
+                        )}
+                        {onRemove ? (
+                            <button
+                                type="button"
+                                aria-label="Remove"
+                                onClick={(event) => {
+                                    event.stopPropagation();
+                                    onRemove(ref.id);
+                                }}
+                                disabled={disabled}
+                                className="inline-flex size-4 shrink-0 items-center justify-center circular-corners:rounded-full rounded-corners:rounded-sm text-tint/8 transition hover:bg-tint hover:text-tint-strong disabled:cursor-not-allowed disabled:opacity-5"
+                            >
+                                <Icon icon="xmark" className="size-2.5" />
+                            </button>
+                        ) : null}
+                    </div>
+                );
+            })}
+        </div>
+    );
+}
+
+function getReferenceIcon(ref: AIChatReference): IconName {
+    switch (ref.type) {
+        case 'code-block':
+            return 'code';
+        case 'page':
+            return 'memo';
+        case 'text':
+            return 'quote-left';
+        default:
+            assertNever(ref);
+    }
+}
+
+/**
+ * Jump to the content a reference points at, for chips that aren't rendered as links:
+ * - a code block: scroll it into view on the current page and focus it;
+ * - a page without a known href: scroll back to the top (the reader is most likely on it).
+ */
+function focusReference(ref: AIChatReference) {
+    if (ref.type === 'page') {
+        window.scrollTo({ top: 0, behavior: 'smooth' });
+        return;
+    }
+
+    const candidates = document.querySelectorAll<HTMLElement>(`#${CSS.escape(ref.id)}`);
+    const target = Array.from(candidates).find((el) => !el.closest('[data-ai-chat]'));
+    if (!target) {
+        return;
+    }
+    target.scrollIntoView({ behavior: 'smooth', block: 'center' });
+    target.querySelector<HTMLElement>('[data-codeblock-focus]')?.focus({ preventScroll: true });
+}
@@ -0,0 +1,83 @@
+'use client';
+
+import { tcls } from '@/lib/tailwind';
+import React from 'react';
+import { useAIChatWidthStore } from './useAIChatWidthStore';
+
+function setResizing(active: boolean) {
+    document.documentElement.dataset.aiChatResizing = String(active);
+}
+
+export function AIChatResizeHandle() {
+    const setWidth = useAIChatWidthStore((state) => state.setWidth);
+    const frameRef = React.useRef<number | null>(null);
+    const widthRef = React.useRef(0);
+
+    React.useEffect(() => {
+        const onResize = () => useAIChatWidthStore.getState().syncWidth();
+        window.addEventListener('resize', onResize);
+        return () => {
+            window.removeEventListener('resize', onResize);
+            if (frameRef.current !== null) {
+                cancelAnimationFrame(frameRef.current);
+            }
+            setResizing(false);
+        };
+    }, []);
+
+    const stopResizing = (event: React.PointerEvent<HTMLDivElement>) => {
+        if (event.currentTarget.hasPointerCapture(event.pointerId)) {
+            event.currentTarget.releasePointerCapture(event.pointerId);
+        }
+        if (frameRef.current !== null) {
+            cancelAnimationFrame(frameRef.current);
+            frameRef.current = null;
+        }
+        setResizing(false);
+    };
+
+    const handlePointerDown = (event: React.PointerEvent<HTMLDivElement>) => {
+        event.preventDefault();
+        event.currentTarget.setPointerCapture(event.pointerId);
+        widthRef.current = useAIChatWidthStore.getState().width;
+        setResizing(true);
+    };
+
+    const handlePointerMove = (event: React.PointerEvent<HTMLDivElement>) => {
+        if (!event.currentTarget.hasPointerCapture(event.pointerId)) {
+            return;
+        }
+        // Panel is right-anchored, so its width is the distance from the cursor to the right edge.
+        widthRef.current = window.innerWidth - event.clientX;
+        if (frameRef.current === null) {
+            frameRef.current = requestAnimationFrame(() => {
+                frameRef.current = null;
+                widthRef.current = setWidth(widthRef.current);
+            });
+        }
+    };
+
+    const handlePointerUp = (event: React.PointerEvent<HTMLDivElement>) => {
+        if (!event.currentTarget.hasPointerCapture(event.pointerId)) {
+            return;
+        }
+        setWidth(widthRef.current);
+        stopResizing(event);
+    };
+
+    return (
+        <div
+            aria-hidden="true"
+            onPointerDown={handlePointerDown}
+            onPointerMove={handlePointerMove}
+            onPointerUp={handlePointerUp}
+            onPointerCancel={stopResizing}
+            className={tcls(
+                'group -translate-x-1/2 absolute inset-y-0 left-0 z-10 hidden w-3 cursor-col-resize touch-none lg:flex',
+                'items-stretch justify-center'
+            )}
+        >
+            <span className="h-full w-px rounded-full bg-transparent transition-all duration-150 ease-out group-hover:w-0.5 group-hover:bg-primary-solid/40 group-active:w-0.5 group-active:bg-primary-solid" />
+        </div>
+    );
+}
@@ -1,5 +1,7 @@
+import { useCurrentContent } from '@/components/hooks';
 import { tString, useLanguage } from '@/intl/client';
 import type { AIChatController } from '../AI';
+import { useRecentSearchQueries } from '../Search/recent-queries';
 import { Button } from '../primitives';

 export default function AIChatSuggestedQuestions(props: {
@@ -7,16 +9,31 @@ export default function AIChatSuggestedQuestions(props: {
    suggestions?: string[];
 }) {
    const language = useLanguage();
-    const { chatController, suggestions: _suggestions } = props;
+    const { siteSpaceId } = useCurrentContent();
+    const recentQueries = useRecentSearchQueries(siteSpaceId ?? '');
+    const { chatController, suggestions: configuredSuggestions } = props;

-    const suggestions =
-        _suggestions && _suggestions.length > 0
-            ? _suggestions
-            : [
-                  tString(language, 'ai_chat_suggested_questions_about_this_page'),
-                  tString(language, 'ai_chat_suggested_questions_read_next'),
-                  tString(language, 'ai_chat_suggested_questions_example'),
-              ];
+    const defaultSuggestions = [
+        tString(language, 'ai_chat_suggested_questions_about_this_page'),
+        tString(language, 'ai_chat_suggested_questions_read_next'),
+        tString(language, 'ai_chat_suggested_questions_example'),
+    ];
+    const baseSuggestions =
+        configuredSuggestions && configuredSuggestions.length > 0
+            ? configuredSuggestions
+            : defaultSuggestions;
+
+    const suggestions = [
+        ...recentQueries.filter((entry) => entry.action === 'ask').map((entry) => entry.query),
+        ...baseSuggestions,
+    ].reduce<string[]>((acc, suggestion) => {
+        if (acc.includes(suggestion)) {
+            return acc;
+        }
+
+        acc.push(suggestion);
+        return acc;
+    }, []);

    return (
        <div
@@ -0,0 +1,129 @@
+'use client';
+
+import { CustomizationAIMode } from '@gitbook/api';
+import fnv1a from '@sindresorhus/fnv1a';
+import { AnimatePresence, motion } from 'motion/react';
+import * as React from 'react';
+import { createPortal } from 'react-dom';
+
+import { useAIChatController, useAIConfig } from '@/components/AI';
+import { useIsMobile } from '@/components/hooks/useIsMobile';
+import { useIsMounted } from '@/components/hooks/useIsMounted';
+import { Button } from '@/components/primitives';
+import { t, useLanguage } from '@/intl/client';
+
+import { AIChatIcon } from '../AIChatIcon';
+import { useStableTextSelection } from './useStableTextSelection';
+
+/** Gap between the selection and the button. */
+const GAP = 8;
+/** Minimum distance to the viewport edges. */
+const MARGIN = 8;
+
+/**
+ * Floating "Ask" button anchored above a text selection. Clicking it stages the selection as a
+ * reference and opens the AI chat. Only rendered in Assistant mode, on non-touch devices.
+ */
+export function AskAITextSelection() {
+    const config = useAIConfig();
+    const language = useLanguage();
+    const chatController = useAIChatController();
+    const isMobile = useIsMobile();
+    const isMounted = useIsMounted();
+
+    const enabled = config.aiMode === CustomizationAIMode.Assistant && !isMobile;
+
+    const toolbarRef = React.useRef<HTMLDivElement>(null);
+    const { selection, clear } = useStableTextSelection({
+        rootSelector: '[data-content-ref-root]',
+        enabled,
+        ignoreRef: toolbarRef,
+    });
+
+    const [coords, setCoords] = React.useState<{ top: number; left: number } | null>(null);
+
+    // Position once the button has been measured, so it can be centered and clamped to the viewport.
+    React.useLayoutEffect(() => {
+        if (!selection) {
+            return;
+        }
+        const el = toolbarRef.current;
+        if (!el) {
+            return;
+        }
+
+        const width = el.offsetWidth;
+        const height = el.offsetHeight;
+        const { anchor } = selection;
+
+        let top = anchor.top - GAP - height;
+        if (top < MARGIN) {
+            // Not enough room above the selection: drop below it.
+            top = anchor.bottom + GAP;
+        }
+        top = Math.min(top, window.innerHeight - height - MARGIN);
+
+        const left = Math.min(
+            Math.max(anchor.centerX - width / 2, MARGIN),
+            window.innerWidth - width - MARGIN
+        );
+
+        setCoords({ top, left });
+    }, [selection]);
+
+    const onClick = () => {
+        if (!selection) {
+            return;
+        }
+        const content = selection.text;
+        if (!content.trim()) {
+            return;
+        }
+
+        chatController.addReference({
+            type: 'text',
+            id: `text-${fnv1a(content, { size: 32 })}`,
+            content,
+        });
+        chatController.open();
+        chatController.focus();
+        clear();
+    };
+
+    if (!enabled || !isMounted) {
+        return null;
+    }
+
+    return createPortal(
+        <AnimatePresence>
+            {selection ? (
+                <motion.div
+                    ref={toolbarRef}
+                    initial={{ opacity: 0, scale: 0.92 }}
+                    animate={{ opacity: coords ? 1 : 0, scale: 1 }}
+                    exit={{ opacity: 0, scale: 0.92 }}
+                    transition={{ duration: 0.12, ease: 'easeOut' }}
+                    style={{
+                        position: 'fixed',
+                        top: coords?.top ?? 0,
+                        left: coords?.left ?? 0,
+                        zIndex: 40,
+                    }}
+                    // Keep the selection alive: prevent the button from stealing focus on click.
+                    onMouseDown={(event) => event.preventDefault()}
+                >
+                    <Button
+                        size="small"
+                        variant="primary"
+                        icon={<AIChatIcon state="default" trademark={config.trademark} />}
+                        onClick={onClick}
+                        className="shadow-sm"
+                    >
+                        {t(language, 'ask')}
+                    </Button>
+                </motion.div>
+            ) : null}
+        </AnimatePresence>,
+        document.body
+    );
+}
@@ -0,0 +1 @@
+export * from './AskAITextSelection';
@@ -0,0 +1,202 @@
+'use client';
+
+import * as React from 'react';
+
+type SelectionAnchor = {
+    top: number;
+    bottom: number;
+    centerX: number;
+};
+
+export type StableTextSelection = {
+    anchor: SelectionAnchor;
+    text: string;
+};
+
+type Options = {
+    /** Selector of the content root; both selection endpoints must be inside it. */
+    rootSelector: string;
+    enabled: boolean;
+    /** Pointer events inside this element are ignored, so clicking the UI keeps the selection. */
+    ignoreRef: React.RefObject<HTMLElement | null>;
+};
+
+const KEYBOARD_DEBOUNCE_MS = 250;
+const SCROLL_SETTLE_MS = 200;
+// Coalesces the rapid down/up bursts of a double/triple-click into a single, non-flashing show.
+const POINTER_SETTLE_MS = 120;
+
+/**
+ * Track a stable text selection within `rootSelector`, debounced so the floating UI it powers
+ * doesn't flicker mid-gesture. The selection is dropped on collapse, window blur, scroll, and
+ * when a new gesture starts.
+ */
+export function useStableTextSelection(options: Options): {
+    selection: StableTextSelection | null;
+    clear: () => void;
+} {
+    const { rootSelector, enabled, ignoreRef } = options;
+    const [selection, setSelection] = React.useState<StableTextSelection | null>(null);
+
+    const clear = React.useCallback(() => {
+        window.getSelection()?.removeAllRanges();
+        setSelection(null);
+    }, []);
+
+    React.useEffect(() => {
+        if (!enabled) {
+            setSelection(null);
+            return;
+        }
+
+        let pointerDown = false;
+        let keyboardTimer: ReturnType<typeof setTimeout> | null = null;
+        let scrollTimer: ReturnType<typeof setTimeout> | null = null;
+        let finalizeTimer: ReturnType<typeof setTimeout> | null = null;
+
+        const clearKeyboardTimer = () => {
+            if (keyboardTimer) {
+                clearTimeout(keyboardTimer);
+                keyboardTimer = null;
+            }
+        };
+
+        const clearFinalizeTimer = () => {
+            if (finalizeTimer) {
+                clearTimeout(finalizeTimer);
+                finalizeTimer = null;
+            }
+        };
+
+        const finalize = () => {
+            // A new gesture started; it will reschedule its own finalize.
+            if (pointerDown) {
+                return;
+            }
+            setSelection(readStableSelection(rootSelector));
+        };
+
+        const schedulePointerFinalize = () => {
+            clearKeyboardTimer();
+            clearFinalizeTimer();
+            finalizeTimer = setTimeout(() => {
+                finalizeTimer = null;
+                finalize();
+            }, POINTER_SETTLE_MS);
+        };
+
+        const isIgnored = (target: EventTarget | null) =>
+            target instanceof Node && !!ignoreRef.current?.contains(target);
+
+        const onSelectionChange = () => {
+            const sel = window.getSelection();
+            if (!sel || sel.isCollapsed || sel.rangeCount === 0 || !sel.toString().trim()) {
+                clearKeyboardTimer();
+                setSelection(null);
+                return;
+            }
+            // Mid-drag, or a pointer finalize is already queued: let the gesture settle first.
+            if (pointerDown || finalizeTimer) {
+                return;
+            }
+            clearKeyboardTimer();
+            keyboardTimer = setTimeout(finalize, KEYBOARD_DEBOUNCE_MS);
+        };
+
+        const onPointerDown = (event: PointerEvent) => {
+            if (isIgnored(event.target)) {
+                return;
+            }
+            // New gesture: hide and cancel a pending show so it can't fire mid double-click.
+            pointerDown = true;
+            clearFinalizeTimer();
+            setSelection(null);
+        };
+
+        const onPointerUp = (event: PointerEvent) => {
+            if (isIgnored(event.target)) {
+                return;
+            }
+            pointerDown = false;
+            schedulePointerFinalize();
+        };
+
+        // pointercancel replaces pointerup when a gesture is interrupted (OS gesture, scroll handoff).
+        const onPointerCancel = () => {
+            pointerDown = false;
+            schedulePointerFinalize();
+        };
+
+        const onScroll = () => {
+            setSelection(null);
+            if (scrollTimer) {
+                clearTimeout(scrollTimer);
+            }
+            scrollTimer = setTimeout(() => {
+                if (!pointerDown) {
+                    finalize();
+                }
+            }, SCROLL_SETTLE_MS);
+        };
+
+        const onWindowBlur = () => {
+            clearKeyboardTimer();
+            setSelection(null);
+        };
+
+        document.addEventListener('selectionchange', onSelectionChange);
+        document.addEventListener('pointerdown', onPointerDown, true);
+        document.addEventListener('pointerup', onPointerUp, true);
+        document.addEventListener('pointercancel', onPointerCancel, true);
+        window.addEventListener('scroll', onScroll, true);
+        window.addEventListener('blur', onWindowBlur);
+
+        return () => {
+            document.removeEventListener('selectionchange', onSelectionChange);
+            document.removeEventListener('pointerdown', onPointerDown, true);
+            document.removeEventListener('pointerup', onPointerUp, true);
+            document.removeEventListener('pointercancel', onPointerCancel, true);
+            window.removeEventListener('scroll', onScroll, true);
+            window.removeEventListener('blur', onWindowBlur);
+            clearKeyboardTimer();
+            clearFinalizeTimer();
+            if (scrollTimer) {
+                clearTimeout(scrollTimer);
+            }
+        };
+    }, [enabled, rootSelector, ignoreRef]);
+
+    return { selection, clear };
+}
+
+function readStableSelection(rootSelector: string): StableTextSelection | null {
+    const sel = window.getSelection();
+    if (!sel || sel.isCollapsed || sel.rangeCount === 0) {
+        return null;
+    }
+
+    const text = sel.toString().trim();
+    if (!text) {
+        return null;
+    }
+
+    const root = document.querySelector(rootSelector);
+    if (!root || !root.contains(sel.anchorNode) || !root.contains(sel.focusNode)) {
+        return null;
+    }
+
+    const anchor = getSelectionAnchor(sel);
+    return anchor ? { anchor, text } : null;
+}
+
+/** Box centered above the whole selection, or null if it has no size or is scrolled out of view. */
+function getSelectionAnchor(sel: Selection): SelectionAnchor | null {
+    const rect = sel.getRangeAt(0).getBoundingClientRect();
+    if (!rect.width && !rect.height) {
+        return null;
+    }
+    if (rect.bottom < 0 || rect.top > window.innerHeight) {
+        return null;
+    }
+    return { top: rect.top, bottom: rect.bottom, centerX: rect.left + rect.width / 2 };
+}
@@ -3,3 +3,4 @@ export * from './AIChatButton';
 export * from './AIChatIcon';
 export * from './AIResponseFeedback';
 export * from './AIChatControlButton';
+export * from './AskAITextSelection';
@@ -0,0 +1,78 @@
+'use client';
+
+import {
+    getLocalStorageItem,
+    removeLocalStorageItem,
+    setLocalStorageItem,
+} from '@/lib/browser/local-storage';
+import { create } from 'zustand';
+import { type StorageValue, persist } from 'zustand/middleware';
+
+const AI_CHAT_MIN_WIDTH = 384;
+const AI_CHAT_MAX_WIDTH = 640;
+const MIN_CONTENT_WIDTH = 720;
+
+type AIChatWidthStore = {
+    width: number;
+    toggleWidth: () => void;
+    setWidth: (width: number) => number;
+    syncWidth: () => void;
+};
+
+type PersistedState = Pick<AIChatWidthStore, 'width'>;
+
+export const useAIChatWidthStore = create<AIChatWidthStore>()(
+    persist(
+        (set, get) => ({
+            width: AI_CHAT_MIN_WIDTH,
+            toggleWidth: () =>
+                get().setWidth(
+                    get().width >= AI_CHAT_MAX_WIDTH ? AI_CHAT_MIN_WIDTH : AI_CHAT_MAX_WIDTH
+                ),
+            setWidth: (width) => {
+                const clamped = clampWidth(width);
+                if (get().width !== clamped) {
+                    set({ width: clamped });
+                }
+                setWidthOnViewport(clamped);
+                return clamped;
+            },
+            syncWidth: () => setWidthOnViewport(get().width),
+        }),
+        {
+            name: '@gitbook/ai-chat-width',
+            storage: {
+                getItem: (name) =>
+                    getLocalStorageItem<StorageValue<PersistedState> | null>(name, null),
+                setItem: (name, value) => setLocalStorageItem(name, value),
+                removeItem: (name) => removeLocalStorageItem(name),
+            },
+            partialize: (state) => ({ width: state.width }),
+            onRehydrateStorage: () => (state) => state?.syncWidth(),
+        }
+    )
+);
+
+/**
+ * Whether the panel is at its maximum width.
+ */
+export const useIsAIChatMaxWidth = () =>
+    useAIChatWidthStore((state) => state.width >= AI_CHAT_MAX_WIDTH);
+
+// Hoisted so the synchronous persist rehydrate (during create() above) can call them before this point.
+function setWidthOnViewport(width: number) {
+    if (typeof document !== 'undefined') {
+        document.documentElement.style.setProperty('--ai-chat-width', `${capToViewport(width)}px`);
+    }
+}
+
+function clampWidth(width: number) {
+    return Math.min(AI_CHAT_MAX_WIDTH, Math.max(AI_CHAT_MIN_WIDTH, Math.round(width)));
+}
+
+// Cap a width so the remaining content keeps a usable minimum at the current viewport.
+function capToViewport(width: number) {
+    return typeof window === 'undefined'
+        ? width
+        : Math.min(width, Math.max(AI_CHAT_MIN_WIDTH, window.innerWidth - MIN_CONTENT_WIDTH));
+}
@@ -132,7 +132,7 @@ function AdSponsoredLink(props: { spaceId: string }) {
    viaUrl.searchParams.set('utm_campaign', spaceId);

    return (
-        <p className={tcls('mt-2', 'mr-2', 'text-xs', 'text-right', 'text-tint-subtle')}>
+        <p className={tcls('mt-2', 'mr-2', 'text-xs', 'text-right', 'text-tint')}>
            <Link
                target="_blank"
                href={viaUrl.toString()}
@@ -42,7 +42,7 @@ export function AnnouncementBanner(props: {
            className="theme-bold:bg-header-background pt-4 pb-2"
            data-nosnippet=""
        >
-            <div className="transition-all duration-300 motion-reduce:transition-none lg:chat-open:pr-80 xl:chat-open:pr-96">
+            <div className="transition-all duration-300 motion-reduce:transition-none lg:chat-open:pr-(--ai-chat-width)">
                <div className={tcls('relative', CONTAINER_STYLE)}>
                    <Tag
                        href={contentRef?.href ?? ''}
@@ -80,8 +80,7 @@ export function CookiesToast(props: { privacyPolicy?: string }) {
                'max-w-md',
                'text-balance',
                'sm:left-auto',
-                'lg:chat-open:mr-80',
-                'xl:chat-open:mr-100',
+                'lg:chat-open:mr-(--ai-chat-width)',
                'transition-all',
                'motion-reduce:transition-none',
                'duration-300',
@@ -18,7 +18,7 @@ export function AnnotationPopover(props: { children: React.ReactNode; body: Reac
            arrowProps={{ className: 'fill-tint-1' }}
        >
            <dfn
-                data-testid="annotation-button"
+                data-annotation=""
                className="cursor-help underline decoration-1 decoration-dotted underline-offset-2"
                // biome-ignore lint/a11y/noNoninteractiveTabindex: we want to be able to focus the definition to open the tooltip
                tabIndex={0}
@@ -5,7 +5,6 @@ import {
    SkeletonHeading,
    SkeletonImage,
    SkeletonParagraph,
-    SkeletonSmall,
    SkeletonUpdate,
 } from '@/components/primitives';
 import type { ClassValue } from '@/lib/tailwind';
@@ -29,6 +28,7 @@ import { ListItem } from './ListItem';
 import { BlockMath } from './Math';
 import { OpenAPIOperation, OpenAPISchemas, OpenAPIWebhook } from './OpenAPI';
 import { Paragraph } from './Paragraph';
+import { Prompt } from './Prompt';
 import { Quote } from './Quote';
 import { ReusableContent } from './ReusableContent';
 import { Stepper } from './Stepper';
@@ -112,6 +112,8 @@ export function Block<T extends DocumentBlock>(props: BlockProps<T>) {
                return <Updates {...props} block={block} />;
            case 'update':
                return <Update {...props} block={block} />;
+            case 'prompt':
+                return <Prompt {...props} block={block} />;
            case 'if':
                // If block should be processed by the API.
                return null;
@@ -142,7 +144,7 @@ export function BlockSkeleton(props: { block: DocumentBlock; style: ClassValue }
        case 'file':
            return <SkeletonHeading id={id} style={style} />;
        case 'paragraph':
-            return <SkeletonSmall id={id} style={style} />;
+            return <SkeletonParagraph id={id} className={style} />;
        case 'list-ordered':
        case 'list-unordered':
        case 'list-tasks':
@@ -152,8 +154,9 @@ export function BlockSkeleton(props: { block: DocumentBlock; style: ClassValue }
        case 'hint':
        case 'tabs':
        case 'stepper-step':
+        case 'prompt':
        case 'if':
-            return <SkeletonParagraph id={id} style={style} />;
+            return <SkeletonParagraph id={id} className={style} />;
        case 'expandable':
        case 'table':
        case 'swagger':
@@ -173,7 +176,7 @@ export function BlockSkeleton(props: { block: DocumentBlock; style: ClassValue }
        case 'drawing':
            return <SkeletonImage id={id} style={style} />;
        case 'updates':
-            return <SkeletonUpdate id={id} style={style} />;
+            return <SkeletonUpdate id={id} className={style} />;
        case 'image':
        case 'code-line':
        case 'tabs-item':
@@ -3,6 +3,7 @@ import type {
    DocumentBlockEmbed,
    DocumentBlockFile,
    DocumentBlockImage,
+    DocumentBlockImages,
    JSONDocument,
 } from '@gitbook/api';

@@ -12,6 +13,14 @@ import { type ClassValue, tcls } from '@/lib/tailwind';
 import type { DocumentContextProps } from './DocumentView';
 import { Inlines } from './Inlines';

+export type CaptionAlign = NonNullable<DocumentBlockImages['data']['align']>;
+
+const captionAlignStyles = {
+    center: 'mx-auto',
+    left: 'mr-auto ml-0',
+    right: 'mr-0 ml-auto',
+} satisfies Record<CaptionAlign, ClassValue>;
+
 /**
 * Wrap a content of a block that has a potential caption.
 */
@@ -22,6 +31,7 @@ export function Caption(
        style?: ClassValue;
        fit?: boolean;
        wrapperStyle?: ClassValue;
+        align?: CaptionAlign;
        block: DocumentBlockImage | DocumentBlockDrawing | DocumentBlockEmbed | DocumentBlockFile;
        withBorder?: boolean;
        withFrame?: boolean;
@@ -49,6 +59,7 @@ export function Caption(
            withFrame && 'p-2',
        ],
        style,
+        align = 'center',
    } = props;

    const caption = getNodeFragmentByName(block, 'caption');
@@ -64,7 +75,7 @@ export function Caption(

    return (
        <picture className={tcls('relative', style)}>
-            <div className={tcls(wrapperStyle, 'mx-auto')}>{children}</div>
+            <div className={tcls(wrapperStyle, captionAlignStyles[align])}>{children}</div>
            <figcaption
                className={tcls(
                    'text-xs',
@@ -0,0 +1,57 @@
+'use client';
+
+import { CustomizationAIMode } from '@gitbook/api';
+
+import { useAIChatController, useAIConfig } from '@/components/AI';
+import { AIChatIcon } from '@/components/AIChat';
+import { Button } from '@/components/primitives';
+import { t, useLanguage } from '@/intl/client';
+import { type ClassValue, tcls } from '@/lib/tailwind';
+
+import { getCodeTextFromId } from './utils';
+
+export function AskAICodeButton(props: {
+    codeId: string;
+    title?: string;
+    syntax?: string;
+    style: ClassValue;
+}) {
+    const { codeId, title, syntax, style } = props;
+
+    const language = useLanguage();
+    const config = useAIConfig();
+    const chatController = useAIChatController();
+
+    if (config.aiMode !== CustomizationAIMode.Assistant) {
+        return null;
+    }
+
+    const onClick = () => {
+        const codeText = getCodeTextFromId(codeId);
+        if (!codeText?.trim()) {
+            return;
+        }
+
+        chatController.addReference({
+            type: 'code-block',
+            id: codeId,
+            label: title ?? 'Code',
+            content: codeText,
+            syntax,
+        });
+        chatController.open();
+        chatController.focus();
+    };
+
+    return (
+        <Button
+            size="xsmall"
+            variant="secondary"
+            icon={<AIChatIcon state="default" trademark={config.trademark} className="" />}
+            onClick={onClick}
+            className={tcls(style, 'translate-y-0!', 'print:hidden', '[[data-ai-chat]_&]:hidden')}
+        >
+            {t(language, 'ask')}
+        </Button>
+    );
+}
@@ -141,6 +141,7 @@ export function ClientCodeBlock(props: ClientBlockProps) {
            style={style}
            theme={theme ?? plainTheme}
            id={codeBlockBodyId}
+            isPrint={mode === 'print'}
        />
    );

@@ -81,7 +81,14 @@ export async function CodeBlock(
        const theme = await highlight(block, richInlines, {
            themes: themes,
        });
-        return <CodeBlockRenderer block={block} style={style} theme={theme} />;
+        return (
+            <CodeBlockRenderer
+                block={block}
+                style={style}
+                theme={theme}
+                isPrint={context.mode === 'print'}
+            />
+        );
    }

    const variables = context.contentContext
@@ -6,6 +6,7 @@ import { tcls } from '@/lib/tailwind';

 import { AnnotationPopover } from '../Annotation/AnnotationPopover';
 import type { BlockProps } from '../Block';
+import { AskAICodeButton } from './AskAICodeButton';
 import { CopyCodeButton } from './CopyCodeButton';
 import type { HighlightLine, HighlightTheme, HighlightToken } from './highlight';

@@ -13,6 +14,11 @@ type CodeBlockRendererProps = Pick<BlockProps<DocumentBlockCode>, 'block' | 'sty
    theme: HighlightTheme;
    'aria-busy'?: boolean;
    id?: string;
+    /**
+     * Whether the block is rendered for print/PDF.
+     * When true, the "Ask AI" button is not rendered.
+     */
+    isPrint?: boolean;
 };

 /**
@@ -22,11 +28,12 @@ export const CodeBlockRenderer = forwardRef(function CodeBlockRenderer(
    props: CodeBlockRendererProps,
    ref: React.ForwardedRef<HTMLDivElement>
 ) {
-    const { block, style, theme, 'aria-busy': ariaBusy } = props;
+    const { block, style, theme, 'aria-busy': ariaBusy, isPrint } = props;

    const withLineNumbers = Boolean(block.data.lineNumbers) && block.nodes.length > 1;
    const withWrap = block.data.overflow === 'wrap';
    const title = block.data.title;
+    const isSingleLine = theme.lines.length <= 1 && !withWrap;

    const id = useId();
    const codeId = props.id || id;
@@ -39,15 +46,24 @@ export const CodeBlockRenderer = forwardRef(function CodeBlockRenderer(
    return (
        <div
            ref={ref}
+            id={codeId}
            aria-busy={ariaBusy}
            className={tcls(
                'group/codeblock shiki relative flex shrink flex-col overflow-hidden print:overflow-visible',
+                'circular-corners:rounded-2xl rounded-corners:rounded-xl straight-corners:rounded-xs',
+                '[&:has([data-codeblock-focus]:focus)]:ring-2 [&:has([data-codeblock-focus]:focus)]:ring-primary-hover',
                style
            )}
            /* Sets the code theme's mode (light or dark) for the site's theme mode (light or dark).
             * Used to style UI elements (scrollbars, form controls) correctly and apply the right default to "plain" code blocks. */
            data-color-scheme={`${theme.themes.light.type} ${theme.themes.dark.type}`}
        >
+            <span
+                data-codeblock-focus
+                tabIndex={-1}
+                aria-hidden
+                className="pointer-events-none absolute size-0 outline-none"
+            />
            <div className="flex items-center justify-start gap-2 text-sm">
                {title ? (
                    <div
@@ -63,14 +79,26 @@ export const CodeBlockRenderer = forwardRef(function CodeBlockRenderer(
                    </div>
                ) : null}
            </div>
-            <div className="relative">
-                <CopyCodeButton
-                    codeId={codeId}
-                    style="absolute top-2 right-2 z-2 self-start justify-self-end font-sans leading-none opacity-0 backdrop-blur-md group-hover/codeblock:opacity-11"
-                />
+            <div className="relative flex min-h-0 flex-col">
+                <div
+                    className={tcls(
+                        'absolute right-2 z-2 flex items-center gap-1.5 font-sans leading-none opacity-0 group-hover/codeblock:opacity-11 has-[button:focus-visible]:opacity-11',
+                        isSingleLine ? 'inset-y-0' : 'top-2'
+                    )}
+                >
+                    {!isPrint ? (
+                        <AskAICodeButton
+                            codeId={codeId}
+                            title={title}
+                            syntax={block.data.syntax}
+                            style="backdrop-blur-md"
+                        />
+                    ) : null}
+                    <CopyCodeButton codeId={codeId} style="backdrop-blur-md" />
+                </div>
                <pre
                    className={tcls(
-                        'relative overflow-auto border border-tint-subtle bg-tint-subtle theme-bold-tint:bg-tint-base theme-muted:bg-tint-base py-2 text-tint-strong contrast-more:border-tint contrast-more:bg-tint-base print:overflow-visible',
+                        'relative overflow-auto border border-tint-subtle bg-tint-subtle theme-bold-tint:bg-tint-base theme-muted:bg-tint-base py-2.5 text-tint-strong contrast-more:border-tint contrast-more:bg-tint-base print:overflow-visible',
                        'circular-corners:rounded-2xl rounded-corners:rounded-xl straight-corners:rounded-xs depth-subtle:shadow-xs',
                        title && 'rounded-ss-none!'
                    )}
@@ -82,7 +110,6 @@ export const CodeBlockRenderer = forwardRef(function CodeBlockRenderer(
                    }}
                >
                    <code
-                        id={codeId}
                        className={tcls(
                            'table max-h-full w-fit min-w-full [counter-reset:line] print:max-h-none print:whitespace-pre-wrap',
                            withWrap && 'whitespace-pre-wrap',
@@ -114,27 +141,30 @@ function CodeHighlightLine(props: {
    withLineNumbers: boolean;
 }) {
    const { line, isLast, withLineNumbers, bg, fg } = props;
+    const lineStyle = {
+        color: fg?.color,
+        ...fg?.vars,
+        backgroundColor: bg?.color,
+        ...bg?.vars,
+    };
    return (
        <span
-            className={tcls('highlight-line', line.highlighted && 'highlighted')}
-            style={{
-                color: fg?.color,
-                ...fg?.vars,
-                backgroundColor: bg?.color,
-                ...bg?.vars,
-            }}
-        >
-            {withLineNumbers && (
-                <span
-                    className="highlight-line-number"
-                    style={{
-                        color: fg?.color,
-                        ...fg?.vars,
-                        backgroundColor: bg?.color,
-                        ...bg?.vars,
-                    }}
-                />
+            className={tcls(
+                'highlight-line',
+                line.diff === 'added' && 'diff-added',
+                line.diff === 'deleted' && 'diff-deleted',
+                line.highlighted && 'highlighted'
            )}
+            aria-label={
+                line.diff === 'added'
+                    ? 'Added line'
+                    : line.diff === 'deleted'
+                      ? 'Removed line'
+                      : undefined
+            }
+            style={lineStyle}
+        >
+            {withLineNumbers && <span className="highlight-line-number" style={lineStyle} />}
            <span className="highlight-line-content">
                <CodeHighlightTokens tokens={line.tokens} />
                {!isLast && '\n'}
@@ -6,6 +6,8 @@ import { Button } from '@/components/primitives';
 import { t, useLanguage } from '@/intl/client';
 import { type ClassValue, tcls } from '@/lib/tailwind';

+import { getCodeTextFromId } from './utils';
+
 /**
 * Client component to copy the code of a code block.
 * To avoid passing large payload to the client, the code is computed from the DOM.
@@ -31,12 +33,12 @@ export function CopyCodeButton(props: { codeId: string; style: ClassValue }) {
    }, [copied]);

    const onClick = () => {
-        const element = document.getElementById(codeId);
-        if (!element) {
+        const codeText = getCodeTextFromId(codeId);
+        if (codeText === null) {
            return;
        }

-        navigator.clipboard.writeText(getCodeText(element));
+        navigator.clipboard.writeText(codeText);

        setCopied(true);
    };
@@ -52,31 +54,3 @@ export function CopyCodeButton(props: { codeId: string; style: ClassValue }) {
        </Button>
    );
 }
-
-/**
- * Compute the code text from the DOM,
- * ignoring the empty white space we use for empty lines (represented with a class "ew").
- */
-function getCodeText(code: HTMLElement): string {
-    let text = '';
-
-    const iterate = (node: Node) => {
-        if (node instanceof HTMLBRElement) {
-            text += '\n';
-        } else if (node instanceof HTMLSpanElement) {
-            if (node.classList.contains('ew')) {
-                text += '\n';
-            } else {
-                text += node.innerText;
-            }
-        } else if (node instanceof HTMLElement) {
-            node.childNodes.forEach(iterate);
-        } else {
-            text += node.textContent;
-        }
-    };
-
-    iterate(code);
-
-    return text;
-}
@@ -1,31 +1,62 @@
 'use client';

 import { useTheme } from 'next-themes';
-import { useEffect, useId, useMemo, useRef, useState } from 'react';
+import { useCallback, useEffect, useId, useLayoutEffect, useMemo, useRef, useState } from 'react';
+import { createPortal } from 'react-dom';

+import { useHasBeenInViewport } from '@/components/hooks/useHasBeenInViewport';
 import { Loading } from '@/components/primitives/Loading';
 import { tcls } from '@/lib/tailwind';
 import Panzoom from '@panzoom/panzoom';
+import type { RenderResult } from 'mermaid';
+import { FocusScope, usePreventScroll } from 'react-aria';
 import { type ClientBlockProps, ClientCodeBlock } from './ClientCodeBlock';
 import { MermaidPanZoomControls } from './MermaidPanZoomControls';
 import { getPlainCodeBlock } from './highlight';

+/** Duration of the fullscreen dialog enter/exit animation, must match `animate-blur-in/out`. */
+const DIALOG_ANIMATION_MS = 200;
+
 /**
 * Used to render a Mermaid diagram from a CodeBlock.
 */
 export function MermaidCodeBlock(props: ClientBlockProps) {
-    const { block, style } = props;
+    const { block, mode, style } = props;
    const source = getPlainCodeBlock(block);
+    const rootRef = useRef<HTMLDivElement>(null);
+    const panelRef = useRef<HTMLDivElement>(null);
    const wrapperRef = useRef<HTMLDivElement>(null);
    const diagramRef = useRef<HTMLDivElement>(null);
+    // A stable container that holds the diagram subtree. We portal the diagram into it and
+    // only ever move this plain node between the inline slot and the dialog — never the
+    // React-managed subtree itself — so React stays in control and panzoom/SVG are preserved.
+    const diagramHostRef = useRef<HTMLDivElement | null>(null);
+    if (diagramHostRef.current === null && typeof document !== 'undefined') {
+        const host = document.createElement('div');
+        // `display: contents` so the host adds no box of its own (the diagram becomes a
+        // direct flex child of the dialog panel and can fill it).
+        host.style.display = 'contents';
+        diagramHostRef.current = host;
+    }
    const [panZoom, setPanZoom] = useState<ReturnType<typeof Panzoom> | null>(null);
    const [error, setError] = useState(false);
    const [isLoading, setIsLoading] = useState(true);
+    // `isFullscreen` is the open intent; `isExiting` keeps the dialog mounted while it
+    // animates closed. `isPresent` is true whenever the diagram lives in the dialog.
+    const [isFullscreen, setIsFullscreen] = useState(false);
+    const [isExiting, setIsExiting] = useState(false);
+    const isPresent = isFullscreen || isExiting;
    const { resolvedTheme } = useTheme();
    const darkMode = resolvedTheme === 'dark';
    const id = useSafeId();
+    const hasBeenInViewport = useHasBeenInViewport(rootRef, { rootMargin: '800px' });
+    const shouldRender = mode === 'print' || hasBeenInViewport;

    useEffect(() => {
+        if (!shouldRender) {
+            return;
+        }
+
        const container = diagramRef.current;
        const wrapper = wrapperRef.current;
        if (!container || !wrapper) {
@@ -36,57 +67,165 @@ export function MermaidCodeBlock(props: ClientBlockProps) {
        let cleanupPanZoom: (() => void) | undefined;
        setError(false);
        setIsLoading(true);
+        setPanZoom(null);
+        container.innerHTML = '';
+
+        const cancelScheduledRender = scheduleMermaidWork(() => {
+            enqueueMermaidRender(async () => {
+                if (cancelled) {
+                    return null;
+                }
+
+                return renderMermaidDiagram({
+                    source,
+                    id,
+                    darkMode,
+                });
+            })
+                .then((result) => {
+                    if (!result || cancelled) {
+                        return;
+                    }
+
+                    container.innerHTML = result.svg;
+                    if (container.querySelector('svg')) {
+                        result.bindFunctions?.(container);
+                    }

-        renderMermaidDiagram({
-            container,
-            source,
-            id,
-            darkMode,
-        })
-            .then(() => {
-                if (!cancelled) {
                    cleanupPanZoom = initPanzoom({
                        container,
                        wrapper,
                        onInit: setPanZoom,
                    });
-                }
-            })
-            .catch(() => {
-                if (!cancelled) {
-                    setError(true);
-                }
-            })
-            .finally(() => {
-                if (!cancelled) {
-                    setIsLoading(false);
-                }
-            });
+                })
+                .catch(() => {
+                    if (!cancelled) {
+                        setError(true);
+                    }
+                })
+                .finally(() => {
+                    if (!cancelled) {
+                        setIsLoading(false);
+                    }
+                });
+        });

        return () => {
            cancelled = true;
+            cancelScheduledRender();
            cleanupPanZoom?.();
            setPanZoom(null);
        };
-    }, [source, id, darkMode]);
+    }, [source, id, darkMode, shouldRender]);
+
+    // Lock the page scroll while the dialog is on screen (handles scrollbar width and iOS).
+    usePreventScroll({ isDisabled: !isPresent });
+
+    const openFullscreen = useCallback(() => {
+        // Reserve the inline slot's current height before the diagram is detached, so the
+        // page layout does not jump. Measured here while still inline and un-restyled.
+        const root = rootRef.current;
+        if (root) {
+            root.style.minHeight = `${root.offsetHeight}px`;
+        }
+        setIsExiting(false);
+        setIsFullscreen(true);
+        // Re-center the diagram for the larger view.
+        panZoom?.reset();
+    }, [panZoom]);
+
+    const closeFullscreen = useCallback(() => {
+        setIsFullscreen(false);
+        setIsExiting(true);
+    }, []);
+
+    // Keep the dialog mounted until the exit animation finishes, then unmount it.
+    useEffect(() => {
+        if (!isExiting) {
+            return;
+        }
+
+        const timer = window.setTimeout(() => {
+            setIsExiting(false);
+            panZoom?.reset();
+        }, DIALOG_ANIMATION_MS);
+        return () => window.clearTimeout(timer);
+    }, [isExiting, panZoom]);
+
+    // Allow Escape to close the dialog.
+    useEffect(() => {
+        if (!isFullscreen) {
+            return;
+        }
+
+        const onKeyDown = (event: KeyboardEvent) => {
+            if (event.key === 'Escape') {
+                closeFullscreen();
+            }
+        };
+
+        document.addEventListener('keydown', onKeyDown);
+        return () => document.removeEventListener('keydown', onKeyDown);
+    }, [isFullscreen, closeFullscreen]);
+
+    // Keep the diagram host in the inline slot on mount (and whenever it isn't in the dialog).
+    useLayoutEffect(() => {
+        const host = diagramHostRef.current;
+        const root = rootRef.current;
+        if (host && root && !host.parentNode) {
+            root.appendChild(host);
+        }
+    }, []);
+
+    // Move the diagram host into the dialog panel (and back) as the panel mounts/unmounts.
+    // Done in the panel's ref callback so it happens during commit, before FocusScope reads
+    // focus. The inline slot's reserved height (set in openFullscreen) is cleared on return.
+    const setPanel = useCallback((panel: HTMLDivElement | null) => {
+        panelRef.current = panel;
+        const host = diagramHostRef.current;
+        const root = rootRef.current;
+        if (!host) {
+            return;
+        }
+
+        if (panel) {
+            panel.appendChild(host);
+        } else if (root) {
+            root.appendChild(host);
+            root.style.minHeight = '';
+        }
+    }, []);

    if (error) {
        return <ClientCodeBlock {...props} />;
    }

-    return (
-        <div className={tcls('relative', style)} contentEditable={false}>
+    // The live diagram subtree. It is portaled into a stable host that moves between the
+    // inline slot and the dialog, so its markup must not depend on where it currently lives.
+    const diagram = (
+        <div
+            className={tcls(
+                'group/mermaid relative',
+                isPresent ? 'flex h-full w-full flex-col' : null
+            )}
+        >
            <div
                ref={wrapperRef}
-                className={
+                className={tcls(
                    isLoading
                        ? 'invisible absolute inset-x-0 overflow-hidden'
-                        : 'cursor-grab overflow-hidden active:cursor-grabbing'
-                }
+                        : 'cursor-grab overflow-hidden active:cursor-grabbing',
+                    isPresent && !isLoading ? 'flex-1' : null
+                )}
            >
                <div
                    ref={diagramRef}
-                    className="overflow-auto p-2 [&_svg]:h-auto [&_svg]:max-w-full"
+                    className={tcls(
+                        'overflow-auto p-2 [&_svg]:h-auto [&_svg]:max-w-full',
+                        isPresent
+                            ? 'flex h-full items-center justify-center [&_svg]:max-h-full'
+                            : null
+                    )}
                />
            </div>
            {isLoading ? (
@@ -94,24 +233,62 @@ export function MermaidCodeBlock(props: ClientBlockProps) {
                    <Loading className="h-8 w-8" />
                </div>
            ) : null}
-            {!isLoading && panZoom ? <MermaidPanZoomControls panZoom={panZoom} /> : null}
+            {!isLoading && panZoom ? (
+                <MermaidPanZoomControls
+                    panZoom={panZoom}
+                    isFullscreen={isPresent}
+                    onToggleFullscreen={isFullscreen ? closeFullscreen : openFullscreen}
+                />
+            ) : null}
        </div>
    );
+
+    return (
+        <>
+            {/* Inline slot: hosts the diagram in the document flow until it goes fullscreen. */}
+            <div ref={rootRef} className={tcls('relative', style)} contentEditable={false} />
+            {diagramHostRef.current ? createPortal(diagram, diagramHostRef.current) : null}
+            {isPresent
+                ? createPortal(
+                      <FocusScope contain restoreFocus>
+                          {/* Backdrop: dims and blurs the page, closes on click. */}
+                          {/* biome-ignore lint/a11y/useKeyWithClickEvents: a global Escape handler closes the dialog. */}
+                          <div
+                              aria-hidden="true"
+                              className={tcls(
+                                  'fixed inset-0 z-40 bg-tint-base/3 backdrop-blur-md dark:bg-tint-base/6',
+                                  isFullscreen ? 'animate-fade-in' : 'animate-fade-out'
+                              )}
+                              onClick={closeFullscreen}
+                          />
+                          {/* Centered panel. The padding area lets clicks fall through to the backdrop. */}
+                          <div className="pointer-events-none fixed inset-0 z-40 flex items-center justify-center p-3 sm:p-5 lg:p-8">
+                              <div
+                                  ref={setPanel}
+                                  role="dialog"
+                                  aria-modal="true"
+                                  aria-label="Mermaid diagram"
+                                  className={tcls(
+                                      'pointer-events-auto relative flex h-full w-full max-w-[110rem] flex-col overflow-hidden rounded-2xl border border-tint-subtle bg-tint-base shadow-2xl',
+                                      isFullscreen ? 'animate-blur-in' : 'animate-blur-out'
+                                  )}
+                              />
+                          </div>
+                      </FocusScope>,
+                      document.body
+                  )
+                : null}
+        </>
+    );
 }

 async function renderMermaidDiagram(args: {
-    container: HTMLElement;
    source: string;
    id: string;
    darkMode: boolean;
-}) {
-    const { container, source, id, darkMode } = args;
-    const [{ default: mermaid }, { default: zenuml }] = await Promise.all([
-        import('mermaid'),
-        import('@mermaid-js/mermaid-zenuml'),
-    ]);
-
-    await mermaid.registerExternalDiagrams([zenuml]);
+}): Promise<RenderResult> {
+    const { source, id, darkMode } = args;
+    const { mermaid } = await loadMermaid();

    mermaid.initialize({
        startOnLoad: false,
@@ -120,11 +297,115 @@ async function renderMermaidDiagram(args: {
        theme: darkMode ? 'dark' : undefined,
    });

-    const { svg, bindFunctions } = await mermaid.render(`mermaid-diagram-${id}`, source, container);
-    container.innerHTML = svg;
-    bindFunctions?.(container);
+    const renderContainer = createMermaidRenderContainer();
+
+    try {
+        return await mermaid.render(`mermaid-diagram-${id}`, source, renderContainer);
+    } finally {
+        renderContainer.remove();
+    }
 }

+/**
+ * Mermaid measures labels while rendering, so the temporary render target must be
+ * connected to the document. Keep it fixed and contained so those layout reads do
+ * not walk the visible document flow.
+ */
+function createMermaidRenderContainer() {
+    const container = document.createElement('div');
+
+    container.setAttribute('aria-hidden', 'true');
+    Object.assign(container.style, {
+        contain: 'strict',
+        height: '100vh',
+        isolation: 'isolate',
+        left: '0',
+        overflow: 'hidden',
+        pointerEvents: 'none',
+        position: 'fixed',
+        top: '0',
+        visibility: 'hidden',
+        width: '100vw',
+        zIndex: '-1',
+    });
+
+    document.body.appendChild(container);
+
+    return container;
+}
+
+let mermaidLoadPromise: Promise<{
+    mermaid: typeof import('mermaid')['default'];
+}> | null = null;
+
+async function loadMermaid() {
+    if (!mermaidLoadPromise) {
+        mermaidLoadPromise = Promise.all([import('mermaid'), import('@mermaid-js/mermaid-zenuml')])
+            .then(async ([{ default: mermaid }, { default: zenuml }]) => {
+                await mermaid.registerExternalDiagrams([zenuml]);
+                return { mermaid };
+            })
+            .catch((error) => {
+                mermaidLoadPromise = null;
+                throw error;
+            });
+    }
+
+    return mermaidLoadPromise;
+}
+
+let mermaidRenderQueue = Promise.resolve();
+
+function enqueueMermaidRender<T>(task: () => Promise<T>) {
+    const result = mermaidRenderQueue.then(task, task);
+    mermaidRenderQueue = result.catch(() => {}).then(waitForNextFrame);
+
+    return result;
+}
+
+function waitForNextFrame() {
+    return new Promise<void>((resolve) => {
+        requestAnimationFrame(() => resolve());
+    });
+}
+
+function scheduleMermaidWork(callback: () => void) {
+    const win = window as WindowWithIdleCallback;
+    let cancelled = false;
+
+    if (win.requestIdleCallback && win.cancelIdleCallback) {
+        const handle = win.requestIdleCallback(
+            () => {
+                if (!cancelled) {
+                    callback();
+                }
+            },
+            { timeout: 1500 }
+        );
+
+        return () => {
+            cancelled = true;
+            win.cancelIdleCallback?.(handle);
+        };
+    }
+
+    const handle = window.setTimeout(() => {
+        if (!cancelled) {
+            callback();
+        }
+    });
+
+    return () => {
+        cancelled = true;
+        window.clearTimeout(handle);
+    };
+}
+
+type WindowWithIdleCallback = Window & {
+    requestIdleCallback?: (callback: () => void, options?: { timeout: number }) => number;
+    cancelIdleCallback?: (handle: number) => void;
+};
+
 /**
 * Initialize panzoom on the diagram container.
 */
@@ -138,7 +419,6 @@ function initPanzoom(args: {
    const instance = Panzoom(container, {
        maxScale: 5,
        minScale: 0.5,
-        contain: 'outside',
        cursor: 'grab',
        panOnlyWhenZoomed: true,
    });
@@ -3,77 +3,54 @@
 import type { PanzoomObject } from '@panzoom/panzoom';

 import { Button } from '@/components/primitives';
-
-const PAN_STEP = 50;
+import { tcls } from '@/lib/tailwind';

 /**
- * Navigation and zoom controls for mermaid diagrams, positioned as an overlay.
+ * Zoom and fullscreen controls for mermaid diagrams, grouped into a single vertical
+ * toolbar positioned in the bottom-right corner. Panning is done by dragging the diagram.
 */
-export function MermaidPanZoomControls(props: { panZoom: PanzoomObject }) {
-    const { panZoom } = props;
+export function MermaidPanZoomControls(props: {
+    panZoom: PanzoomObject;
+    isFullscreen: boolean;
+    onToggleFullscreen: () => void;
+}) {
+    const { panZoom, isFullscreen, onToggleFullscreen } = props;
+    const btnProps = {
+        variant: 'secondary' as const,
+        size: 'xsmall' as const,
+        iconOnly: true,
+        className: tcls('p-1 [&_svg]:size-3.5 opacity-90'),
+        // Non-interactive tooltips: the Tooltip primitive makes their popper wrapper
+        // pointer-transparent so it can't steal the hover that reveals these controls.
+        tooltipProps: {
+            rootProps: { disableHoverableContent: true },
+        },
+    };

    return (
-        <div className="absolute right-3 bottom-3 z-10 grid grid-cols-3 gap-0.5">
-            {/* Row 1: empty, pan up, zoom in */}
-            <div />
-            <Button
-                label="Pan up"
-                icon="chevron-up"
-                variant="secondary"
-                size="xsmall"
-                iconOnly
-                onClick={() => panZoom.pan(0, PAN_STEP, { relative: true })}
-            />
-            <Button
-                label="Zoom in"
-                icon="plus"
-                variant="secondary"
-                size="xsmall"
-                iconOnly
-                onClick={() => panZoom.zoomIn()}
-            />
-            {/* Row 2: pan left, reset, pan right */}
-            <Button
-                label="Pan left"
-                icon="chevron-left"
-                variant="secondary"
-                size="xsmall"
-                iconOnly
-                onClick={() => panZoom.pan(PAN_STEP, 0, { relative: true })}
-            />
+        <div
+            className={tcls(
+                'absolute right-2 bottom-2 z-10 flex flex-col items-center gap-0.5 rounded-lg transition-opacity duration-150 group-focus-within/mermaid:pointer-events-auto group-focus-within/mermaid:opacity-100 group-hover/mermaid:opacity-100 motion-reduce:transition-none',
+                // Keep the controls always visible in fullscreen, otherwise only reveal on hover/focus.
+                isFullscreen ? 'opacity-100' : 'opacity-0'
+            )}
+        >
+            <Button {...btnProps} icon="plus" label="Zoom in" onClick={() => panZoom.zoomIn()} />
            <Button
+                {...btnProps}
+                icon="arrows-to-dot"
                label="Reset view"
-                icon="refresh"
-                variant="secondary"
-                size="xsmall"
-                iconOnly
                onClick={() => panZoom.reset()}
            />
+            <Button {...btnProps} icon="minus" label="Zoom out" onClick={() => panZoom.zoomOut()} />
+
+            <div className="my-0.5 h-px w-4 bg-tint-subtle" />
+
            <Button
-                label="Pan right"
-                icon="chevron-right"
-                variant="secondary"
-                size="xsmall"
-                iconOnly
-                onClick={() => panZoom.pan(-PAN_STEP, 0, { relative: true })}
-            />
-            {/* Row 3: empty, pan down, zoom out */}
-            <div />
-            <Button
-                label="Pan down"
-                icon="chevron-down"
-                variant="secondary"
-                size="xsmall"
-                iconOnly
-                onClick={() => panZoom.pan(0, -PAN_STEP, { relative: true })}
-            />
-            <Button
-                label="Zoom out"
-                icon="minus"
-                variant="secondary"
-                size="xsmall"
-                iconOnly
-                onClick={() => panZoom.zoomOut()}
+                {...btnProps}
+                icon={isFullscreen ? 'compress' : 'expand'}
+                label={isFullscreen ? 'Exit full page' : 'View in full page'}
+                onClick={onToggleFullscreen}
            />
        </div>
    );
@@ -5,6 +5,7 @@ import type {
 } from '@gitbook/api';
 import { useId } from 'react';

+import type { DocumentContext } from '../DocumentView';
 import { CodeBlock } from './CodeBlock';
 import { convertCodeStringToBlock } from './utils';

@@ -15,10 +16,11 @@ import { convertCodeStringToBlock } from './utils';
 export function PlainCodeBlock(props: {
    code: string;
    syntax: string;
+    mode?: DocumentContext['mode'];
    themeKey?: keyof SiteCustomizationSettings['styling']['codeTheme'];
    themes?: CustomizationThemedCodeTheme;
 }) {
-    const { code, syntax, themeKey, themes } = props;
+    const { code, syntax, mode = 'default', themeKey, themes } = props;
    const id = useId();

    const block = convertCodeStringToBlock({ key: id, code, syntax });
@@ -33,7 +35,7 @@ export function PlainCodeBlock(props: {
        <CodeBlock
            document={document}
            context={{
-                mode: 'default',
+                mode,
            }}
            themeKey={themeKey}
            themes={themes}
@@ -1,7 +1,13 @@
 import { expect, it } from 'bun:test';
 import type { DocumentBlockCode } from '@gitbook/api';

-import { type RenderedInline, getInlines, highlight } from './highlight';
+import {
+    type HighlightLine,
+    type HighlightToken,
+    type RenderedInline,
+    getInlines,
+    highlight,
+} from './highlight';

 async function highlightWithInlines(block: DocumentBlockCode) {
    const inlines: RenderedInline[] = getInlines(block).map((inline) => ({
@@ -690,6 +696,138 @@ it('should support multiple code tokens in an annotation', async () => {
    ]);
 });

+function joinLineContent(line: HighlightLine): string {
+    const visit = (tokens: HighlightToken[]): string =>
+        tokens
+            .map((t) => {
+                if (t.type === 'plain') return t.content;
+                if (t.type === 'shiki') return t.token.content;
+                return visit(t.children);
+            })
+            .join('');
+    return visit(line.tokens);
+}
+
+function singleLineBlock(syntax: string | undefined, text: string): DocumentBlockCode {
+    return {
+        object: 'block',
+        type: 'code',
+        data: syntax ? { syntax } : {},
+        nodes: [
+            {
+                object: 'block',
+                type: 'code-line',
+                data: {},
+                nodes: [
+                    {
+                        object: 'text',
+                        leaves: [{ object: 'leaf', marks: [], text }],
+                    },
+                ],
+            },
+        ],
+    };
+}
+
+it('classifies and strips trailing // [!code ++] in JS', async () => {
+    const lines = await highlightWithInlines(
+        singleLineBlock('javascript', 'const a = 1 // [!code ++]')
+    );
+    expect(lines).toHaveLength(1);
+    expect(lines[0]!.diff).toBe('added');
+    expect(joinLineContent(lines[0]!)).toBe('const a = 1');
+});
+
+it('classifies and strips trailing # [!code --] in Python', async () => {
+    const lines = await highlightWithInlines(singleLineBlock('python', 'x = 1 # [!code --]'));
+    expect(lines[0]!.diff).toBe('deleted');
+    expect(joinLineContent(lines[0]!)).toBe('x = 1');
+});
+
+it('classifies and strips <!-- [!code ++] --> in HTML', async () => {
+    const lines = await highlightWithInlines(
+        singleLineBlock('html', '<div></div> <!-- [!code ++] -->')
+    );
+    expect(lines[0]!.diff).toBe('added');
+    expect(joinLineContent(lines[0]!)).toBe('<div></div>');
+});
+
+it('classifies and strips /* [!code --] */ in CSS', async () => {
+    const lines = await highlightWithInlines(
+        singleLineBlock('css', '.a { color: red; } /* [!code --] */')
+    );
+    expect(lines[0]!.diff).toBe('deleted');
+    expect(joinLineContent(lines[0]!)).toBe('.a { color: red; }');
+});
+
+it('does not classify when marker is not at end of line', async () => {
+    const lines = await highlightWithInlines(
+        singleLineBlock('javascript', 'const x = 1 // [!code ++] trailing')
+    );
+    expect(lines[0]!.diff).toBeNull();
+    expect(joinLineContent(lines[0]!)).toBe('const x = 1 // [!code ++] trailing');
+});
+
+it('returns diff: null for lines without a marker', async () => {
+    const lines = await highlightWithInlines(singleLineBlock('javascript', 'console.log("hi")'));
+    expect(lines[0]!.diff).toBeNull();
+});
+
+it('classifies and strips marker via plainHighlighting fallback', async () => {
+    const lines = await highlightWithInlines(
+        singleLineBlock(undefined, 'plain text // [!code ++]')
+    );
+    expect(lines[0]!.diff).toBe('added');
+    expect(joinLineContent(lines[0]!)).toBe('plain text');
+});
+
+it('preserves inline annotation when marker is stripped', async () => {
+    const tokens = await highlightWithInlines({
+        object: 'block',
+        type: 'code',
+        data: { syntax: 'javascript' },
+        nodes: [
+            {
+                object: 'block',
+                type: 'code-line',
+                data: {},
+                nodes: [
+                    {
+                        object: 'text',
+                        leaves: [{ object: 'leaf', marks: [], text: 'console.' }],
+                    },
+                    {
+                        object: 'inline',
+                        type: 'annotation',
+                        nodes: [
+                            {
+                                object: 'text',
+                                leaves: [{ object: 'leaf', marks: [], text: 'log' }],
+                            },
+                        ],
+                        isVoid: false,
+                        fragments: [],
+                    },
+                    {
+                        object: 'text',
+                        leaves: [{ object: 'leaf', marks: [], text: '("Hi") // [!code ++]' }],
+                    },
+                ],
+            },
+        ],
+    });
+
+    expect(tokens[0]!.diff).toBe('added');
+    expect(joinLineContent(tokens[0]!)).toBe('console.log("Hi")');
+    // inline annotation around "log" must be preserved
+    const hasAnnotation = tokens[0]!.tokens.some(
+        (t) =>
+            t.type === 'annotation' &&
+            t.children.some((c) => c.type === 'shiki' && c.token.content === 'log')
+    );
+    expect(hasAnnotation).toBe(true);
+});
+
 it('should handle \\r', async () => {
    const tokens = await highlightWithInlines({
        object: 'block',
@@ -34,11 +34,114 @@ export type HighlightTheme = {
    lines: HighlightLine[];
 };

+export type LineDiffNotation = 'added' | 'deleted';
+
 export type HighlightLine = {
    highlighted: boolean;
+    diff: LineDiffNotation | null;
    tokens: HighlightToken[];
 };

+/**
+ * Detects an in-source diff notation marker at the end of a line, e.g.
+ * `// [!code ++]`, `# [!code --]`, `<!-- [!code ++] -->`, `/* [!code --] */`.
+ * Mirror of the gitbook-x parser; keep regex byte-for-byte identical.
+ */
+const NOTATION_PATTERN =
+    /[ \t]*(?:(?:\/\/|#|--|;)\s*\[!code\s+(\+\+|--)\]|<!--\s*\[!code\s+(\+\+|--)\]\s*-->|\/\*\s*\[!code\s+(\+\+|--)\]\s*\*\/)\s*$/;
+
+export function parseDiffNotation(
+    line: string
+): { diff: LineDiffNotation; markerStart: number } | null {
+    const match = NOTATION_PATTERN.exec(line);
+    if (!match) {
+        return null;
+    }
+    const variant = match[1] ?? match[2] ?? match[3];
+    return {
+        diff: variant === '++' ? 'added' : 'deleted',
+        markerStart: match.index,
+    };
+}
+
+/**
+ * Truncate a sequence of HighlightTokens so only the first `maxLen` characters
+ * (counted across all tokens, recursing into annotations) remain. Used to strip
+ * trailing diff-notation markers from rendered output.
+ */
+export function truncateHighlightTokens(
+    tokens: HighlightToken[],
+    maxLen: number
+): HighlightToken[] {
+    const out: HighlightToken[] = [];
+    let remaining = maxLen;
+    for (const token of tokens) {
+        if (remaining <= 0) {
+            break;
+        }
+        const len = highlightTokenLength(token);
+        if (len <= remaining) {
+            out.push(token);
+            remaining -= len;
+            continue;
+        }
+        out.push(sliceHighlightToken(token, remaining));
+        remaining = 0;
+    }
+    return out;
+}
+
+function highlightTokenLength(token: HighlightToken): number {
+    switch (token.type) {
+        case 'plain':
+            return token.content.length;
+        case 'shiki':
+            return token.token.content.length;
+        case 'annotation':
+            return token.children.reduce((acc, child) => acc + highlightTokenLength(child), 0);
+    }
+}
+
+/**
+ * Concatenate the text content of a sequence of HighlightTokens, recursing
+ * into annotation children. Mirror of {@link highlightTokenLength}.
+ */
+export function getHighlightTokensText(tokens: HighlightToken[]): string {
+    return tokens
+        .map((token) => {
+            switch (token.type) {
+                case 'plain':
+                    return token.content;
+                case 'shiki':
+                    return token.token.content;
+                case 'annotation':
+                    return getHighlightTokensText(token.children);
+            }
+        })
+        .join('');
+}
+
+function sliceHighlightToken(token: HighlightToken, maxLen: number): HighlightToken {
+    switch (token.type) {
+        case 'plain':
+            return { type: 'plain', content: token.content.slice(0, maxLen) };
+        case 'shiki': {
+            const inner = token.token as ThemedToken & { start?: number; end?: number };
+            const newContent = inner.content.slice(0, maxLen);
+            const newToken: ThemedToken & { start?: number; end?: number } = {
+                ...inner,
+                content: newContent,
+            };
+            if (typeof inner.start === 'number') {
+                newToken.end = inner.start + newContent.length;
+            }
+            return { type: 'shiki', token: newToken };
+        }
+        case 'annotation':
+            return { ...token, children: truncateHighlightTokens(token.children, maxLen) };
+    }
+}
+
 export type HighlightToken =
    | { type: 'plain'; content: string }
    | { type: 'shiki'; token: ThemedToken }
@@ -136,6 +239,9 @@ export async function highlight(
            const lineBlock = block.nodes[index];
            const result: HighlightToken[] = [];

+            const lineText = tokens.map((token) => token.content).join('');
+            const notation = parseDiffNotation(lineText);
+
            const eatToken = (): PositionedToken | null => {
                const token = tokens.shift();
                if (token) {
@@ -152,9 +258,14 @@ export async function highlight(

            currentIndex += 1; // for the \n

+            const finalTokens = notation
+                ? truncateHighlightTokens(result, notation.markerStart)
+                : result;
+
            return {
                highlighted: Boolean(lineBlock?.data.highlighted),
-                tokens: result,
+                diff: notation?.diff ?? null,
+                tokens: finalTokens,
            };
        }),
    };
@@ -3,7 +3,14 @@ import type { CustomizationThemedCodeTheme, DocumentBlockCode } from '@gitbook/a
 import { getNodeText } from '@/lib/document';
 import { bundledThemesInfo } from 'shiki/themes';
 import { customThemes } from './customThemes';
-import type { HighlightTheme, HighlightToken, RenderedInline } from './highlight';
+import {
+    type HighlightTheme,
+    type HighlightToken,
+    type RenderedInline,
+    getHighlightTokensText,
+    parseDiffNotation,
+    truncateHighlightTokens,
+} from './highlight';

 /**
 * Parse a code block without highlighting it.
@@ -62,9 +69,14 @@ export function plainHighlight(
                };
            });

+            // Detect diff notation against the built tokens (not the raw nodes)
+            // so any evaluated inline expressions are included in the offset math.
+            const notation = parseDiffNotation(getHighlightTokensText(tokens));
+
            return {
                highlighted: Boolean(lineBlock.data.highlighted),
-                tokens,
+                diff: notation?.diff ?? null,
+                tokens: notation ? truncateHighlightTokens(tokens, notation.markerStart) : tokens,
            };
        }),
    };
@@ -65,3 +65,40 @@ export function convertCodeStringToBlock(args: {
        nodes: lines,
    };
 }
+
+/**
+ * Resolve the code text of a code block from its wrapper id.
+ * Returns null when the block isn't in the DOM (e.g. not yet hydrated).
+ */
+export function getCodeTextFromId(codeId: string): string | null {
+    const element = document.getElementById(codeId)?.querySelector('code');
+    return element ? getCodeText(element) : null;
+}
+
+/**
+ * Compute the code text from the DOM,
+ * ignoring the empty white space we use for empty lines (represented with a class "ew").
+ */
+export function getCodeText(code: HTMLElement): string {
+    let text = '';
+
+    const iterate = (node: Node) => {
+        if (node instanceof HTMLBRElement) {
+            text += '\n';
+        } else if (node instanceof HTMLSpanElement) {
+            if (node.classList.contains('ew')) {
+                text += '\n';
+            } else {
+                text += node.innerText;
+            }
+        } else if (node instanceof HTMLElement) {
+            node.childNodes.forEach(iterate);
+        } else {
+            text += node.textContent;
+        }
+    };
+
+    iterate(code);
+
+    return text;
+}
@@ -18,7 +18,7 @@ export async function Embed(props: BlockProps<gitbookAPI.DocumentBlockEmbed>) {
        return null;
    }

-    ReactDOM.preload('https://cdn.iframe.ly/embed.js', { as: 'script' });
+    ReactDOM.preload('https://iframely.net/embed.js', { as: 'script' });

    const embed = await getDataOrNull(
        context.contentContext.dataFetcher.getEmbedByUrl({
@@ -41,7 +41,7 @@ export async function Embed(props: BlockProps<gitbookAPI.DocumentBlockEmbed>) {
                        }}
                        data-visual-test="blackout"
                    />
-                    <Script strategy="lazyOnload" src="https://cdn.iframe.ly/embed.js" />
+                    <Script strategy="lazyOnload" src="https://iframely.net/embed.js" />
                </>
            ) : embed.type === 'integration' ? (
                <IntegrationBlock
@@ -1,6 +1,8 @@
 import type { DocumentBlockExpandable } from '@gitbook/api';
 import { Icon } from '@gitbook/icons';

+import { getSpaceLanguage, tString } from '@/intl/server';
+import { defaultLanguage } from '@/intl/translations';
 import { getNodeFragmentByType } from '@/lib/document';
 import { tcls } from '@/lib/tailwind';

@@ -10,7 +12,7 @@ import { Blocks } from '../Blocks';
 import { Inlines } from '../Inlines';
 import { Details } from './Details';

-export function Expandable(props: BlockProps<DocumentBlockExpandable>) {
+export async function Expandable(props: BlockProps<DocumentBlockExpandable>) {
    const { block, style, ancestorBlocks, document, context } = props;

    const title = getNodeFragmentByType(block, 'expandable-title');
@@ -26,6 +28,10 @@ export function Expandable(props: BlockProps<DocumentBlockExpandable>) {
    let id = block.meta?.id ?? '';
    id = context.getId ? context.getId(id) : id;

+    const language = context.contentContext
+        ? await getSpaceLanguage(context.contentContext)
+        : defaultLanguage;
+
    return (
        <Details
            id={id}
@@ -68,7 +74,7 @@ export function Expandable(props: BlockProps<DocumentBlockExpandable>) {
                />
                <a
                    href={`#${id}`}
-                    aria-label="Direct link to heading"
+                    aria-label={tString(language, 'direct_link_to_heading')}
                    className={tcls(
                        'absolute',
                        'top-2',
@@ -29,7 +29,7 @@ export async function File(props: BlockProps<DocumentBlockFile>) {
        return null;
    }

-    const language = getSpaceLanguage(context.contentContext);
+    const language = await getSpaceLanguage(context.contentContext);
    const contentType = getSimplifiedContentType(file.contentType);
    const insights = {
        type: 'link_click' as const,
@@ -13,11 +13,11 @@ export const hashLinkButtonWrapperStyles = tcls('relative', 'group/hash');
 export function HashLinkButton(props: {
    id: string;
    block: DocumentBlockTabs | DocumentBlockHeading;
-    label?: string;
+    label: string;
    className?: ClassValue;
    iconClassName?: ClassValue;
 }) {
-    const { id, block, className, iconClassName, label = 'Direct link to block' } = props;
+    const { id, block, className, iconClassName, label } = props;
    const textStyle = getBlockTextStyle(block);
    return (
        <div
@@ -1,5 +1,7 @@
 import type { DocumentBlockHeading } from '@gitbook/api';

+import { getSpaceLanguage, tString } from '@/intl/server';
+import { defaultLanguage } from '@/intl/translations';
 import { tcls } from '@/lib/tailwind';

 import type { BlockProps } from './Block';
@@ -8,7 +10,7 @@ import { Inlines } from './Inlines';
 import { getBlockTextStyle } from './spacing';
 import { getTextAlignment } from './utils';

-export function Heading(props: BlockProps<DocumentBlockHeading>) {
+export async function Heading(props: BlockProps<DocumentBlockHeading>) {
    const { block, style, context, ...rest } = props;

    const textStyle = getBlockTextStyle(block);
@@ -18,6 +20,10 @@ export function Heading(props: BlockProps<DocumentBlockHeading>) {
    let id = block.meta?.id ?? '';
    id = context.getId ? context.getId(id) : id;

+    const language = context.contentContext
+        ? await getSpaceLanguage(context.contentContext)
+        : defaultLanguage;
+
    return (
        <Tag
            id={id}
@@ -39,11 +45,11 @@ export function Heading(props: BlockProps<DocumentBlockHeading>) {
                id={id}
                block={block}
                className={tcls(
-                    '-ml-6 pr-2',
+                    '-ml-6 self-center pr-2',
                    '[.flip-heading-hash_&]:order-last [.flip-heading-hash_&]:ml-1 [.flip-heading-hash_&]:pl-2'
                )}
                iconClassName={tcls('size-4')}
-                label="Direct link to heading"
+                label={tString(language, 'direct_link_to_heading')}
            />

            <div
@@ -5,13 +5,13 @@ import { validateIconName } from '@gitbook/icons/icons';
 import { type ClassValue, tcls } from '@/lib/tailwind';

 import { getSpaceLanguage, tString } from '@/intl/server';
-import { languages } from '@/intl/translations';
+import { defaultLanguage } from '@/intl/translations';
 import { isHeadingBlock } from '@/lib/document';
 import { Block, type BlockProps } from './Block';
 import { Blocks } from './Blocks';
 import { getBlockTextStyle } from './spacing';

-export function Hint({
+export async function Hint({
    block,
    style,
    ancestorBlocks,
@@ -27,8 +27,8 @@ export function Hint({
    const hasHeading = isHeadingBlock(firstNode);

    const language = contextProps.context.contentContext
-        ? getSpaceLanguage(contextProps.context.contentContext)
-        : languages.en;
+        ? await getSpaceLanguage(contextProps.context.contentContext)
+        : defaultLanguage;

    const label = tString(language, `hint_${block.data.style}`);

@@ -92,6 +92,11 @@ export function Hint({
                    'empty:p-0',
                    '-row-end-1',
                    '-col-end-1',
+                    // Allow the grid track to shrink below its content's min-content size so wide
+                    // nested blocks (e.g. code blocks, tables) scroll internally instead of
+                    // overflowing the hint. Without this, the `1fr` column keeps its default
+                    // `min-width: auto` and grows past the hint's width.
+                    'min-w-0',
                    'space-y-3',
                    '[&_.hint]:border',
                    '[&_pre]:border',
@@ -5,7 +5,7 @@ import { resolveContentRefInDocument } from '@/lib/references';
 import { type ClassValue, tcls } from '@/lib/tailwind';

 import type { BlockProps } from './Block';
-import { Caption } from './Caption';
+import { Caption, type CaptionAlign } from './Caption';
 import type { DocumentContext } from './DocumentView';

 export function Images(props: BlockProps<DocumentBlockImages>) {
@@ -52,6 +52,7 @@ export function Images(props: BlockProps<DocumentBlockImages>) {
                        context={context}
                        isEstimatedOffscreen={isEstimatedOffscreen}
                        withFrame={withFrame}
+                        align={align}
                    />
                ))}
            </div>
@@ -80,8 +81,9 @@ async function ImageBlock(props: {
    siblings: number;
    isEstimatedOffscreen: boolean;
    withFrame?: boolean;
+    align?: CaptionAlign;
 }) {
-    const { document, block, context, isEstimatedOffscreen, withFrame } = props;
+    const { document, block, context, isEstimatedOffscreen, withFrame, align } = props;

    const [src, darkSrc] = await Promise.all([
        context.contentContext
@@ -98,7 +100,7 @@ async function ImageBlock(props: {

    return (
        <div className={tcls('relative', 'overflow-hidden')}>
-            <Caption {...props} fit>
+            <Caption {...props} fit align={align}>
                <Image
                    alt={block.data.alt ?? ''}
                    sizes={imageBlockSizes}
@@ -122,7 +124,11 @@ async function ImageBlock(props: {
                        width: getImageDimension(block.data.width, undefined),
                        height: getImageDimension(block.data.height, 'auto'),
                    }}
-                    style={withFrame ? 'rounded-xl' : undefined}
+                    style={
+                        withFrame
+                            ? 'rounded-xl'
+                            : 'circular-corners:rounded-2xl rounded-corners:rounded-sm'
+                    }
                />
            </Caption>
        </div>
@@ -51,8 +51,8 @@ export function InlineActionButton(
                    className: 'text-[1em]',
                }}
                maxLength={action === 'ask' ? 2048 : 512}
-                disabled={action === 'ask' && chatState.loading}
-                aria-busy={action === 'ask' && chatState.loading}
+                disabled={action === 'ask' && chatState.responding}
+                aria-busy={action === 'ask' && chatState.responding}
                leading={icon}
                keyboardShortcut={false}
                onSubmit={(value) => handleSubmit(value as string)}
@@ -1,7 +1,7 @@
 import { type ContentRef, type DocumentInlineLink, SiteInsightsLinkPosition } from '@gitbook/api';

 import { getSpaceLanguage, tString } from '@/intl/server';
-import { type TranslationLanguage, languages } from '@/intl/translations';
+import { type TranslationLanguage, defaultLanguage } from '@/intl/translations';
 import {
    type ResolvedContentRef,
    resolveContentRefFallback,
@@ -60,7 +60,7 @@ export async function InlineLink(props: InlineProps<DocumentInlineLink>) {
    );

    if (context.withLinkPreviews) {
-        const language = contentContext ? getSpaceLanguage(contentContext) : languages.en;
+        const language = contentContext ? await getSpaceLanguage(contentContext) : defaultLanguage;

        return (
            <InlineLinkTooltipWrapper inline={inline} language={language} resolved={resolved}>
@@ -151,10 +151,7 @@ function InlineLinkTooltipWrapper(props: {
        <InlineLinkTooltip
            breadcrumbs={breadcrumbs}
            isExternal={isExternal}
-            isSamePage={isSamePage}
-            openInNewTabLabel={tString(language, 'open_in_new_tab')}
            target={{
-                href: resolved.href,
                text: resolved.text,
                subText: resolved.subText,
                icon: resolved.icon,
@@ -2,91 +2,69 @@
 import { tcls } from '@/lib/tailwind';
 import { Icon } from '@gitbook/icons';
 import { Fragment } from 'react';
-import { Button, HoverCard, HoverCardRoot, HoverCardTrigger, StyledLink } from '../../primitives';
+import { HoverCard, HoverCardRoot, HoverCardTrigger, StyledLink } from '../../primitives';

 export function InlineLinkTooltip(props: {
-    isSamePage: boolean;
    isExternal: boolean;
    breadcrumbs: Array<{ href?: string; label: string; icon?: React.ReactNode }>;
    target: {
-        href: string;
        text: string;
        subText?: string;
        icon?: React.ReactNode;
    };
-    openInNewTabLabel: string;
    children: React.ReactNode;
 }) {
-    const { isSamePage, isExternal, openInNewTabLabel, target, breadcrumbs, children } = props;
+    const { isExternal, target, breadcrumbs, children } = props;

    return (
        <HoverCardRoot>
            <HoverCardTrigger>{children}</HoverCardTrigger>
            <HoverCard className="p-4">
-                <div className="flex items-start gap-4">
-                    <div className="flex flex-col">
-                        {breadcrumbs && breadcrumbs.length > 0 ? (
-                            <div className="mb-1 flex grow flex-wrap items-center gap-x-2 gap-y-0.5 font-semibold text-tint text-xs uppercase leading-tight tracking-wide">
-                                {breadcrumbs.map((crumb, index) => {
-                                    const Tag = crumb.href ? StyledLink : 'div';
+                <div className="flex flex-col">
+                    {breadcrumbs && breadcrumbs.length > 0 ? (
+                        <div className="mb-1 flex grow flex-wrap items-center gap-x-2 gap-y-0.5 font-semibold text-tint text-xs uppercase leading-tight tracking-wide">
+                            {breadcrumbs.map((crumb, index) => {
+                                const Tag = crumb.href ? StyledLink : 'div';

-                                    return (
-                                        <Fragment key={crumb.label}>
-                                            {index !== 0 ? (
-                                                <Icon
-                                                    icon="chevron-right"
-                                                    className="size-3 text-tint-subtle"
-                                                />
+                                return (
+                                    <Fragment key={crumb.label}>
+                                        {index !== 0 ? (
+                                            <Icon
+                                                icon="chevron-right"
+                                                className="size-3 text-tint-subtle"
+                                            />
+                                        ) : null}
+                                        <Tag
+                                            className={tcls(
+                                                'flex gap-1',
+                                                crumb.href &&
+                                                    'links-default:text-tint no-underline hover:underline contrast-more:underline contrast-more:decoration-current'
+                                            )}
+                                            href={crumb.href ?? '#'}
+                                        >
+                                            {crumb.icon ? (
+                                                <span className="mt-0.5 text-tint-subtle empty:hidden">
+                                                    {crumb.icon}
+                                                </span>
                                            ) : null}
-                                            <Tag
-                                                className={tcls(
-                                                    'flex gap-1',
-                                                    crumb.href &&
-                                                        'links-default:text-tint no-underline hover:underline contrast-more:underline contrast-more:decoration-current'
-                                                )}
-                                                href={crumb.href ?? '#'}
-                                            >
-                                                {crumb.icon ? (
-                                                    <span className="mt-0.5 text-tint-subtle empty:hidden">
-                                                        {crumb.icon}
-                                                    </span>
-                                                ) : null}
-                                                {crumb.label}
-                                            </Tag>
-                                        </Fragment>
-                                    );
-                                })}
-                            </div>
-                        ) : null}
-                        <div
-                            className={tcls(
-                                'flex gap-2 leading-snug',
-                                isExternal && 'wrap-anywhere text-sm'
-                            )}
-                        >
-                            {target.icon ? (
-                                <div className="mt-1 text-tint-subtle empty:hidden">
-                                    {target.icon}
-                                </div>
-                            ) : null}
-                            <h5 className="font-semibold">{target.text}</h5>
+                                            {crumb.label}
+                                        </Tag>
+                                    </Fragment>
+                                );
+                            })}
                        </div>
-                    </div>
-                    {!isSamePage && target.href ? (
-                        <Button
-                            className={tcls(
-                                '-mx-2 -my-2 ml-auto',
-                                breadcrumbs?.length === 0 ? 'place-self-center' : null
-                            )}
-                            variant="blank"
-                            href={target.href}
-                            target="_blank"
-                            label={openInNewTabLabel}
-                            size="small"
-                            icon="arrow-up-right-from-square"
-                            iconOnly={true}
-                        />
                    ) : null}
+                    <div
+                        className={tcls(
+                            'flex gap-2 leading-snug',
+                            isExternal && 'wrap-anywhere text-sm'
+                        )}
+                    >
+                        {target.icon ? (
+                            <div className="mt-1 text-tint-subtle empty:hidden">{target.icon}</div>
+                        ) : null}
+                        <h5 className="font-semibold">{target.text}</h5>
+                    </div>
                </div>
                {target.subText ? <p className="mt-1 text-sm text-tint">{target.subText}</p> : null}
            </HoverCard>
@@ -0,0 +1,28 @@
+'use client';
+
+import { useAdaptiveVisitor } from '@/components/Adaptive';
+import { ContentKit, type ContentKitClientContextData } from '@gitbook/react-contentkit/client';
+import React from 'react';
+
+type ContentKitProps<RenderContext> = React.ComponentProps<typeof ContentKit<RenderContext>>;
+
+/**
+ * ContentKit wrapper for integration blocks that need client-only adaptive context.
+ */
+export function ContentKitWithAdaptiveVisitorContext<RenderContext>(
+    props: ContentKitProps<RenderContext>
+) {
+    const getAdaptiveVisitorClaims = useAdaptiveVisitor();
+    const visitorClaims = getAdaptiveVisitorClaims();
+
+    const clientContext = React.useMemo<ContentKitClientContextData>(
+        () => ({
+            getVisitorContext: () => ({
+                visitor: visitorClaims?.visitor ?? null,
+            }),
+        }),
+        [visitorClaims]
+    );
+
+    return <ContentKit {...props} clientContext={clientContext} />;
+}
@@ -1,10 +1,12 @@
-import { GITBOOK_INTEGRATIONS_HOST } from '@/lib/env';
+import { GITBOOK_INTEGRATIONS_CONTENT_HOST, GITBOOK_INTEGRATIONS_HOST } from '@/lib/env';
 import { tcls } from '@/lib/tailwind';
 import type { DocumentBlockIntegration, RenderIntegrationUI } from '@gitbook/api';
 import { ContentKit, ContentKitOutput } from '@gitbook/react-contentkit';

 import type { BlockProps } from '../Block';
 import './contentkit.css';
+import { ContentKitWithAdaptiveVisitorContext } from './ContentKitWithAdaptiveVisitorContext';
+import { shouldRenderIntegrationBlockWithAdaptiveVisitorContext } from './adaptive';
 import { contentKitServerContext } from './contentkit';
 import { fetchSafeIntegrationUI } from './render';
 import { renderIntegrationUi } from './server-actions';
@@ -12,8 +14,12 @@ import { renderIntegrationUi } from './server-actions';
 export async function IntegrationBlock(props: BlockProps<DocumentBlockIntegration>) {
    const { block, context, style } = props;

-    if (!context.contentContext?.space) {
-        throw new Error('integration block requires a content.spaceId');
+    if (!context.contentContext) {
+        throw new Error('Expected a content context to render an block');
+    }
+
+    if (!context.contentContext.space && !block.meta?.spaceId) {
+        throw new Error('integration block requires a spaceId from the context or API');
    }

    const initialInput: RenderIntegrationUI = {
@@ -22,16 +28,28 @@ export async function IntegrationBlock(props: BlockProps<DocumentBlockIntegratio
        action: block.data.action,
        context: {
            type: 'document',
-            spaceId: context.contentContext?.space.id,
+            // When the block originates from a cross-space reusable content, the server adds a spaceId so the integration is
+            // looked up in the correct source space.
+            spaceId: block.meta?.spaceId ?? context.contentContext.space.id,
            editable: false,
            theme: 'light', // TODO: how to handle this without moving rendering to the client side?
        },
    };

-    const initialResponse = await fetchSafeIntegrationUI(context.contentContext, {
-        integrationName: block.data.integration,
-        request: initialInput,
-    });
+    const dataFetcher = block.meta?.token
+        ? context.contentContext.dataFetcher.withToken({ apiToken: block.meta.token })
+        : context.contentContext.dataFetcher;
+
+    const initialResponse = await fetchSafeIntegrationUI(
+        {
+            ...context.contentContext,
+            dataFetcher,
+        },
+        {
+            integrationName: block.data.integration,
+            request: initialInput,
+        }
+    );

    if (initialResponse.error) {
        if (initialResponse.error.code === 404) {
@@ -52,19 +70,34 @@ export async function IntegrationBlock(props: BlockProps<DocumentBlockIntegratio
        return null;
    }

+    const ContentKitComponent = shouldRenderIntegrationBlockWithAdaptiveVisitorContext(
+        initialOutput
+    )
+        ? ContentKitWithAdaptiveVisitorContext
+        : ContentKit;
+
    return (
        <div className={tcls(style)}>
-            <ContentKit
+            <ContentKitComponent
                renderContext={{
                    integrationName: block.data.integration,
                }}
-                security={{ firstPartyDomains: [GITBOOK_INTEGRATIONS_HOST] }}
+                security={{
+                    // Trust both the integrations host and the (cookieless) content host that
+                    // serves rendered WebFrames. `ElementWebframe` gates inbound and outbound
+                    // postMessage on this list, so a WebFrame served from the content host would
+                    // break (no resize/ready/actions) if the content host weren't trusted.
+                    // The hosts are identical until a distinct content origin is configured.
+                    firstPartyDomains: [
+                        ...new Set([GITBOOK_INTEGRATIONS_HOST, GITBOOK_INTEGRATIONS_CONTENT_HOST]),
+                    ],
+                }}
                initialInput={initialInput}
                initialOutput={initialOutput}
                render={renderIntegrationUi}
            >
                <ContentKitOutput output={initialOutput} context={contentKitServerContext} />
-            </ContentKit>
+            </ContentKitComponent>
        </div>
    );
 }
@@ -0,0 +1,67 @@
+import type {
+    ContentKitDescendantElement,
+    ContentKitRenderOutput,
+    ContentKitRootElement,
+    ContentKitStepper,
+} from '@gitbook/api';
+
+type ContentKitElement = ContentKitRootElement | ContentKitDescendantElement | ContentKitStepper;
+
+/**
+ * Decide whether an integration block should expose Adaptive visitor context to webframes.
+ */
+export function shouldRenderIntegrationBlockWithAdaptiveVisitorContext(
+    output: ContentKitRenderOutput
+) {
+    if (output.type === 'complete') {
+        return false;
+    }
+
+    return (
+        output.canAccessVisitorClaims === true &&
+        doesContentKitElementContainWebframe(output.element)
+    );
+}
+
+/**
+ * Check whether a ContentKit element tree contains a webframe element.
+ */
+function doesContentKitElementContainWebframe(element: ContentKitElement): boolean {
+    switch (element.type) {
+        case 'webframe':
+            return true;
+        case 'block':
+        case 'box':
+        case 'hstack':
+        case 'vstack':
+        case 'step':
+        case 'modal':
+        case 'configuration':
+        case 'stepper':
+        case 'card':
+            return doesContentKitElementArrayContainWebframe(element.children);
+        case 'codeblock':
+            return (
+                doesContentKitElementArrayContainWebframe(element.header) ||
+                doesContentKitElementArrayContainWebframe(element.footer)
+            );
+        default:
+            return false;
+    }
+}
+
+function doesContentKitElementArrayContainWebframe(elements: unknown): boolean {
+    if (!Array.isArray(elements)) {
+        return doesContentKitElementContainWebframeValue(elements);
+    }
+
+    return elements.some(doesContentKitElementContainWebframeValue);
+}
+
+function doesContentKitElementContainWebframeValue(value: unknown): boolean {
+    if (typeof value !== 'object' || value === null || !('type' in value)) {
+        return false;
+    }
+
+    return doesContentKitElementContainWebframe(value as ContentKitElement);
+}
@@ -1,5 +1,5 @@
 import { getSpaceLanguage, tString } from '@/intl/server';
-import { languages } from '@/intl/translations';
+import { defaultLanguage } from '@/intl/translations';
 import { Icon } from '@gitbook/icons';
 import type { DocumentContextProps } from '../DocumentView';
 import { HoverCard, HoverCardRoot, HoverCardTrigger } from '../primitives';
@@ -7,7 +7,7 @@ import { HoverCard, HoverCardRoot, HoverCardTrigger } from '../primitives';
 /**
 * Hover card displayed for a link not found.
 */
-export function NotFoundRefHoverCard(
+export async function NotFoundRefHoverCard(
    props: DocumentContextProps & {
        children: React.ReactNode;
    }
@@ -16,7 +16,7 @@ export function NotFoundRefHoverCard(
        context: { contentContext },
        children,
    } = props;
-    const language = contentContext ? getSpaceLanguage(contentContext) : languages.en;
+    const language = contentContext ? await getSpaceLanguage(contentContext) : defaultLanguage;
    return (
        <HoverCardRoot>
            <HoverCardTrigger>{children}</HoverCardTrigger>
@@ -54,6 +54,7 @@ async function OpenAPIOperationBody(props: BlockProps<AnyOpenAPIOperationsBlock>
                    data.operation['x-expandAllResponses'] ?? data['x-expandAllResponses'],
                expandAllModelSections:
                    data.operation['x-expandAllModelSections'] ?? data['x-expandAllModelSections'],
+                headless: block.type === 'openapi-operation' ? block.data.headless : undefined,
            })}
            className="openapi-block"
        />
@@ -56,6 +56,7 @@ async function OpenAPIWebhookBody(props: BlockProps<OpenAPIWebhookBlock>) {
                    data.operation['x-expandAllResponses'] ?? data['x-expandAllResponses'],
                expandAllModelSections:
                    data.operation['x-expandAllModelSections'] ?? data['x-expandAllModelSections'],
+                headless: block.data.headless,
            })}
            className="openapi-block"
        />
@@ -26,8 +26,9 @@ export function getOpenAPIContext(args: {
    context: GitBookAnyContext | undefined;
    expandAllResponses?: boolean;
    expandAllModelSections?: boolean;
+    headless?: boolean;
 }): OpenAPIContextInput {
-    const { props, specUrl, context, expandAllResponses, expandAllModelSections } = args;
+    const { props, specUrl, context, expandAllResponses, expandAllModelSections, headless } = args;
    const { block } = props;

    const customizationLocale = context ? getSpaceLocale(context) : DEFAULT_LOCALE;
@@ -54,6 +55,7 @@ export function getOpenAPIContext(args: {
        renderCodeBlock: (codeProps) => (
            <PlainCodeBlock
                {...codeProps}
+                mode={props.context.mode}
                themeKey="openapi"
                themes={
                    context && 'customization' in context
@@ -95,6 +97,7 @@ export function getOpenAPIContext(args: {
        ),
        expandAllResponses: expandAllResponses || props.context.mode === 'print',
        expandAllModelSections: expandAllModelSections || props.context.mode === 'print',
+        headless,
        id: block.meta?.id,
        blockKey: block.key,
        locale,
@@ -272,7 +272,7 @@ body {
 }
 .scalar-activate-button {
    @apply flex gap-2 items-center;
-    @apply bg-primary-original text-contrast-primary-original hover:bg-primary-solid-hover hover:text-contrast-primary-solid-hover contrast-more:ring-1 rounded-md straight-corners:rounded-none circular-corners:rounded-full circular-corners:px-3 place-self-start;
+    @apply bg-primary-original text-contrast-primary-original hover:bg-primary-solid-hover hover:text-contrast-primary-solid-hover contrast-more:ring-1 rounded-lg straight-corners:rounded-none circular-corners:rounded-full circular-corners:px-3 place-self-start;
    @apply depth-subtle:shadow-xs hover:depth-subtle:shadow-md focus-visible:depth-subtle:shadow-md active:depth-subtle:shadow-xs;
    @apply contrast-more:ring-tint-12 contrast-more:hover:ring-2 contrast-more:hover:ring-tint-12;
    @apply hover:depth-subtle:-translate-y-px focus-visible:depth-subtle:-translate-y-px active:depth-subtle:translate-y-0 transition-all;
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Nicolas Dorseuil	bb46b5b38b	Make href prop optional in SubHeaderLinkItem and update StructurePreview to remove default href values	2026-06-24 20:23:30 +02:00
Nicolas Dorseuil	8a9f163d31	Add SiteSectionList to StructurePreviewVariantSelector for improved section display	2026-06-24 20:14:18 +02:00
Nicolas Dorseuil	7c365f9162	Add social account links to StructurePreviewMoreMenu component	2026-06-24 20:11:48 +02:00
Nicolas Dorseuil	10a7095182	Add metadata export to Page component for SEO configuration	2026-06-24 19:56:36 +02:00
conico974	614a50373a	Merge branch 'main' into conico/structure-preview	2026-06-24 10:47:51 +02:00
Nolann B.	d172684b88	Some small OpenAPI design tweaks (#4337 )	2026-06-23 21:20:28 +02:00
Nicolas Dorseuil	7646cb301c	Add GITBOOK_APP_URL prop to StructurePreview component and update Page to pass it	2026-06-23 20:44:16 +02:00
Nicolas Dorseuil	d2ce6adeb6	Merge remote-tracking branch 'origin/main' into conico/structure-preview	2026-06-23 18:48:26 +02:00
conico974	937c8b8eb2	Remove 'remote' from cache usage in specific functions (#4312 )	2026-06-23 17:59:43 +02:00
Zeno Kapitein	36dbdb48cc	Support agent `goal` query param for `markdownAsk` (#4324 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-23 09:47:51 +02:00
Zeno Kapitein	2dc76a2c3c	Fix empty grouped section dropdown in embedded sites (#4334 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-23 09:47:15 +02:00
Samy Pessé	0edc378c57	Version Packages (#4306 ) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>	2026-06-23 00:10:23 +02:00
Zeno Kapitein	2eb313194a	Remove old PageAction checks (#4333 )	2026-06-22 17:12:35 +02:00
Brett Jephson	882dfcda83	Tidy relating to prompt (#4332 )	2026-06-22 15:48:58 +02:00
Brett Jephson	3ff88ba22f	Adds the prompt block (#4329 )	2026-06-22 11:53:25 +01:00
Nolann B.	51bd768042	Make the AI Assistant panel resizable (#4330 )	2026-06-20 21:41:59 +02:00
spastorelli	daadd91eba	Fix NextLink prefetch side effect on unsigned claims persistance (#4325 )	2026-06-19 11:39:12 +02:00
Nolann B.	f4469b2df3	Support OpenAPI one-operation-per-page mode (#4314 )	2026-06-19 10:35:09 +02:00
Nolann B.	91b325ca08	Add AI chat reference button on text selection (#4326 )	2026-06-19 10:18:07 +02:00
Nolann B.	1616028426	Align code block action buttons vertically with the block (#4327 )	2026-06-19 10:03:37 +02:00
Nolann B.	6c15d8314a	Update OpenAPI border radius (#4323 )	2026-06-18 23:25:19 +02:00
Nicolas Dorseuil	63e4968987	Enhance StructurePreview message handling by validating event origin against GITBOOK_APP_URL	2026-06-18 16:33:48 +02:00
Zeno Kapitein	6c967c9bcc	Add search and filters to table blocks (#4322 ) Co-authored-by: utkuufuk <utkuufuk@gmail.com> Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-18 10:41:40 +02:00
Nicolas Dorseuil	6eb3d3b4e5	Refactor StructurePreview by removing obsolete test files and updating middleware for demo routing	2026-06-17 18:40:08 +02:00
Nicolas Dorseuil	2ba90833a3	fix typescript	2026-06-17 18:15:23 +02:00
Johan Preynat	c44d822fe1	Trust cookieless integration content host for WebFrames (#4321 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-17 18:08:25 +02:00
Zeno Kapitein	b0553d5fc8	Skeletons and layout	2026-06-17 17:18:12 +02:00
Zeno Kapitein	af3cda1c53	Fix wide content overflowing hint blocks (#4320 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-17 13:32:53 +02:00
Nicolas Dorseuil	a06da70f5f	Refactor StructurePreview to handle partial updates and navigation messages	2026-06-17 11:41:06 +02:00
Tomek	a0ad403a91	Stabilize Playwright Chrome text rendering across platforms (#4318 )	2026-06-17 09:21:16 +00:00
Zeno Kapitein	0ca49523a2	Remove external link button from link tooltip hover card (#4316 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-17 10:52:02 +02:00
Zeno Kapitein	76550415ac	Fix ⌘-C opening the Assistant on Dvorak keyboard layouts (#4311 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-17 10:51:20 +02:00
Nicolas Dorseuil	53ec8b9f29	Enhance StructurePreview navigation by adding sectionId handling and updating state management	2026-06-17 10:30:14 +02:00
Nicolas Dorseuil	6f63c00300	Refactor StructurePreview components and state management to reduce client side data	2026-06-17 10:13:40 +02:00
Nicolas Dorseuil	c334ea2748	linting	2026-06-16 17:38:28 +02:00
Nicolas Dorseuil	d75cdf1334	small comment	2026-06-16 17:38:12 +02:00
Nicolas Dorseuil	cb649c55cb	Commit to revert, just to demonstrate what we can do directly in GBO	2026-06-16 17:38:02 +02:00
Nicolas Dorseuil	205c512cb6	Refactor variant categorization in StructurePreview to utilize categorizeVariants function for improved clarity and maintainability	2026-06-16 16:53:32 +02:00
Nicolas Dorseuil	334a31d7fc	Refactor TableOfContents styles and components for improved class management and responsiveness	2026-06-16 16:37:56 +02:00
Nicolas Dorseuil	f157cfc9a7	Add disableAnimations prop to SiteSectionTabs for improved rendering control	2026-06-16 16:24:34 +02:00
Nolann B.	509389c7e5	Update `@gitbook/api` to latest version (#4315 )	2026-06-16 14:30:10 +02:00
Nicolas Dorseuil	3485c0192b	Refactor StructurePreviewLogoImage to utilize Image component for improved logo rendering and responsiveness	2026-06-16 13:40:54 +02:00
Nolann B.	88b94b5d36	Handle circular oneOf with discriminator and allOf in OpenAPI schemas (#4070 )	2026-06-16 13:34:17 +02:00
Nicolas Dorseuil	27d9ad6fe4	Refactor Header and StructurePreview components to utilize HeaderLayout for improved structure and consistency in header rendering	2026-06-16 13:31:47 +02:00
Nicolas Dorseuil	96602eb552	Refactor AIChatButton and StructurePreview components to enhance AI assistant integration, improving button rendering and functionality	2026-06-16 13:08:59 +02:00
Nicolas Dorseuil	17d092acdc	Refactor Search components to enhance structure and functionality, introducing SearchHeaderInput for improved search input handling	2026-06-16 13:01:25 +02:00
Nicolas Dorseuil	107018f570	Refactor SpacesDropdown and related components for improved structure and functionality	2026-06-16 12:49:15 +02:00
Nicolas Dorseuil	3e152b0662	Refactor layout and page components to streamline structure and enhance theme handling	2026-06-16 12:15:26 +02:00
Nicolas Dorseuil	6a8720894d	Refactor header link components for improved structure and styling consistency	2026-06-16 12:05:36 +02:00
Nicolas Dorseuil	8a5ed60c26	Refactor StructurePreview and HeaderLogo components to utilize HeaderLogoContent for improved logo rendering and fallback handling	2026-06-16 11:45:02 +02:00
Nicolas Dorseuil	52fc156b06	Refactor StructurePreview component and related state management by removing unused viewport mode logic and simplifying imports	2026-06-16 11:35:54 +02:00
Greg Bergé	251630c49f	Use page actions items list for ordering and default action (#4302 ) Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-06-15 15:19:20 +02:00
Zeno Kapitein	acf2719d06	Stabilize AI Assistant visual regression tests (#4305 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-15 14:19:56 +02:00
Nicolas Dorseuil	46091b65d1	Add Structure Preview component and related functionality	2026-06-15 13:40:27 +02:00
Zeno Kapitein	ddba8031ec	Reference the current page when opening the Assistant (#4308 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-12 18:35:15 +02:00
Zeno Kapitein	72a1596ae8	Fix AI assistant forms overflowing the chat panel (#4309 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-12 17:22:57 +02:00
Nolann B.	5b36c59061	Fix PDF export failing on API Reference pages (#4307 )	2026-06-12 13:43:38 +00:00
Zeno Kapitein	77c717c251	Group an assistant turn's tool calls into a single expandable (#4303 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-12 15:26:27 +02:00
Samy Pessé	60310b4c83	Version Packages (#4278 ) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>	2026-06-12 14:55:55 +02:00
conico974	6eabaecbad	Implement getVariables method for expression evaluation (#4304 )	2026-06-12 14:26:17 +02:00
Zeno Kapitein	423bbd06d9	Create Claude launch.json (#4301 )	2026-06-12 12:52:24 +02:00
conico974	36f19c8018	Add LLMs directive for documentation links (#4300 )	2026-06-12 12:09:25 +02:00
Zeno Kapitein	2ecbdd8f62	add navigateToPage assistant tool (#4299 ) Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-12 11:57:55 +02:00
Nolann B.	c727cc8b9d	Fix inflated visitor counts from unstable anonymous visitorId (#4293 )	2026-06-12 00:52:59 +02:00
Zeno Kapitein	2c729d461e	Rework Assistant “based on your context” popover wording (#4298 )	2026-06-11 22:19:32 +02:00
Tomek	d83ea4ce14	chore(a11y): increase width of the collapse/expand arrow in menu items (#4297 )	2026-06-11 14:02:38 +00:00
spastorelli	bac8608e78	Add support for passing visitor claims to integration webframes (#4291 )	2026-06-11 09:52:26 +02:00
Greg Bergé	7a1236a3a5	Fix search results linking to page instead of section anchor (#4295 ) Co-authored-by: Claude Fable 5 <noreply@anthropic.com>	2026-06-10 19:23:59 +00:00
Zeno Kapitein	ed80bd9e7a	Add recent search (and chat) queries (#4225 )	2026-06-10 18:45:07 +02:00
Zeno Kapitein	7036b67307	Fix `window.GitBook.registerAssistant` is being called twice (#4296 )	2026-06-10 15:54:38 +00:00
Zeno Kapitein	6bd522b322	Update site section tabs with better column calc and animations (#4252 )	2026-06-10 17:35:38 +02:00
Zeno Kapitein	74fc3f74d7	Fix: Submit feedback confirmation does not auto close (#4240 )	2026-06-10 17:35:29 +02:00
conico974	3e384c679e	Add suggested follow-up questions to AI answer markdown response (#4284 )	2026-06-10 17:29:08 +02:00
Greg Bergé	f1fa1061db	Upgrade bun.lock (#4294 )	2026-06-10 17:09:10 +02:00
Addison	4f754a73a3	Add information about GitBook to page markdown (#4292 )	2026-06-09 19:53:07 +02:00
conico974	62d6d28888	Fix context handling in resolveContentRef for page resolution issues (#4290 )	2026-06-09 15:10:03 +02:00
conico974	fd73a9912b	Fix caching strategy for icon fetching (#4289 )	2026-06-08 13:46:32 +02:00
Johan Preynat	595435ac4a	Ensure local search matches remote filter when there are no sections (#4287 )	2026-06-04 19:14:54 +02:00
Addison	aa9d41a1b6	Update footer for llms (#4286 )	2026-06-04 16:19:02 +02:00
conico974	30089b404c	Adjust caching strategy for icon fetching based on runtime environment (#4283 ) Co-authored-by: Steven H <steven@gitbook.io>	2026-06-02 12:00:38 +02:00
Nolann B.	92b68560e1	Add Ask AI in CodeBlock (#4220 )	2026-06-02 00:40:54 +02:00
Nolann B.	f158064817	Match OpenAPI operation paths regardless of trailing slash (#4282 )	2026-05-29 12:16:24 +02:00
Greg Bergé	2885a137f8	Fix heading anchor alignment with heading text and translate its accessibility label (#4281 )	2026-05-29 09:38:47 +02:00
spastorelli	0ffb74a6f8	Fix issue where MCP POST requests with expired tokens returns 307 instead of 401 (#4280 )	2026-05-28 16:35:12 +02:00
Nolann B.	b116a0a2a4	Fix OpenAPI code sample box not scrolling on initial load (#4279 )	2026-05-28 12:04:32 +02:00
Greg Bergé	b9bb535d52	Full screen view for Mermaid diagrams (#4275 ) Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-05-28 09:17:21 +02:00
Samy Pessé	257ca09a5e	Version Packages (#4263 ) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Tomek Gargula <tomasz@gitbook.com>	2026-05-28 07:12:45 +00:00
Tomek	f405fffa06	feat: add support for icons in tabs (#4277 )	2026-05-27 15:22:25 +00:00
Tomek	16a54b6bb9	Improve accessibility in published docs (#4276 )	2026-05-27 12:40:25 +00:00
Greg Bergé	526a928420	Fix annotation hover interaction when card has a target link (#4274 )	2026-05-27 12:02:20 +02:00
conico974	c201abab5f	Don't display agents instructions for page action (#4272 )	2026-05-27 10:41:53 +02:00
Greg Bergé	3697dfefed	Add page actions layout visibility (#4270 )	2026-05-22 12:37:37 +02:00
spastorelli	287203d197	Show MCP page actions for VA & adaptive sites (#4268 )	2026-05-22 08:47:13 +02:00
conico974	0b38f6c93b	Update regional cache settings (#4267 )	2026-05-20 14:25:59 +02:00
conico974	8ce64f4862	Remove remote from use cache (#4259 )	2026-05-20 14:12:51 +02:00
Greg Bergé	127ef54b0f	Add updates tag filtering (#4265 )	2026-05-20 12:42:51 +02:00
Greg Bergé	67f31aaa7a	Always allow LLMs to read the content (#4264 )	2026-05-20 09:39:35 +02:00
Greg Bergé	51fef84d39	Fix logo size variations (#4266 )	2026-05-19 20:55:45 +02:00
Greg Bergé	0c577a00de	Allow CORS for the same root domain (#4262 ) Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-05-19 14:41:07 +02:00
Samy Pessé	8b6dc6dbbd	Version Packages (#4255 ) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Zeno Kapitein <zeno@gitbook.io>	2026-05-19 13:24:41 +02:00
Antoine Coutellier	2e7ba40a25	feat: support integrations inside reusable content blocks (#4250 )	2026-05-19 11:29:02 +02:00
Greg Bergé	b70b8fd2ca	Fix llms.txt not including all content (#4260 )	2026-05-18 21:33:07 +02:00
Greg Bergé	a9ba996953	Fix left/right aligment of images with caption (#4261 )	2026-05-18 21:32:22 +02:00
Brett Jephson	47c8ccba6f	Fix: clipping of FA icons (#4257 )	2026-05-18 15:09:41 +01:00
conico974	e9842feeef	Bump Next.js to version 16.2.6 and fix oom on dev (#4258 )	2026-05-18 11:12:47 +02:00
Greg Bergé	f4b4fe15c1	Add missing translations (#4254 )	2026-05-16 07:16:49 +02:00
Greg Bergé	06b9fd542a	Do not add target blank on mailto (#4256 )	2026-05-15 20:43:39 +02:00
Taran Vohra	76077f9f6d	Fix publish workflow (#4245 )	2026-05-15 10:51:43 +02:00
Greg Bergé	7b65f7c0d5	Update iframely embed URL (#4253 )	2026-05-14 19:04:34 +02:00
Greg Bergé	37a9453917	Allow to copy in embed (#4251 )	2026-05-13 04:49:14 +00:00
Viktor Renkema	d994875bea	Support code block // [!code -- or ++] notation (#4248 )	2026-05-12 15:39:21 +02:00
Claire Chabas	a9b5521f3a	Fix anchor URL resolution (#4249 )	2026-05-11 16:02:20 +02:00
Greg Bergé	91fadb08ed	Fix turbo burning Mac CPU (#4247 )	2026-05-11 11:36:23 +00:00
Samy Pessé	b55605f25e	Version Packages (#4199 ) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Zeno Kapitein <zeno@gitbook.io>	2026-05-08 13:00:03 +00:00
Addison	6ba5e54d19	add isComposing to search (#4244 )	2026-05-08 18:47:20 +09:00
Samy Pessé	56aeb19e49	Fix events tracked from the middleware missing some properties (#4242 )	2026-05-07 23:15:34 +02:00
conico974	ebab8188f6	Bump @opennextjs/aws and @opennextjs/cloudflare versions (#4243 )	2026-05-07 17:01:05 +02:00
Zeno Kapitein	8064c95267	Fix publish workflow npm upgrade in Bun repo (#4239 )	2026-05-07 09:36:14 +02:00
conico974	2cef2e02c8	Bump Next.js version to 16.2.5 (#4241 )	2026-05-06 22:02:10 +02:00
conico974	8bfced2e0d	Add negotiator for markdown acceptance in middleware (#4238 ) Co-authored-by: Copilot <copilot@github.com>	2026-05-06 14:59:38 +02:00
conico974	61ee4e3637	Add tests for markdown serving based on user agents (#4227 )	2026-05-06 13:52:09 +02:00
Greg Bergé	927aa89213	Add "Go to home" button on 404 page (#4236 )	2026-05-05 13:12:12 +00:00
Greg Bergé	f29d1e2f16	Round images when site customization border style is rounded (#4237 )	2026-05-05 14:50:24 +02:00
conico974	3a9efb8aed	bust revision page markdown (#4235 )	2026-05-05 14:39:34 +02:00
conico974	f71ab8426c	Bust page document data cache (#4234 )	2026-05-04 16:15:27 +02:00
conico974	a3d1558f99	Disable regional cache for debugging purposes (#4233 )	2026-05-04 14:03:29 +02:00
conico974	ca53869e2d	Reduce cache TTL for regional cache and log cache debug (#4232 )	2026-05-04 13:32:36 +02:00
conico974	33598e665b	Add logging for cache retrieval in GitbookIncrementalCache (#4231 )	2026-05-04 11:47:47 +02:00
Samy Pessé	9045ba5248	Remove progressive rollout for markdown stable links (#4230 )	2026-05-01 21:56:28 +02:00
Rodrigo Castro	7061fc2223	Fix hidden pages in sitemap exports (#4216 )	2026-04-30 14:04:37 +01:00
Samy Pessé	0c9e3952b7	Increase rollout of markdown stable links to 50% (#4228 )	2026-04-30 11:37:37 +02:00
Samy Pessé	4b78672135	Fix links to other site-spaces / sections in llms.txt (#4222 )	2026-04-30 08:43:32 +02:00
conico974	10289e4881	Revert search worker changes and add error handling (#4226 ) Co-authored-by: Copilot <copilot@github.com>	2026-04-29 21:59:05 +02:00
conico974	8b6a6df1d6	Move search into a web worker (#4223 ) Co-authored-by: Copilot <copilot@github.com>	2026-04-29 18:42:44 +02:00
conico974	83df84ac28	Improve markdown serving logic (#4224 ) Co-authored-by: Copilot <copilot@github.com>	2026-04-29 18:28:45 +02:00
Greg Bergé	5e5075a137	Make Mermaid controls shown only on hover (#4221 )	2026-04-29 17:13:31 +02:00
Greg Bergé	90c1f68e19	Speed up Mermaid rendering (#4219 )	2026-04-29 15:40:24 +02:00
Zeno Kapitein	0e10124626	Adapt max logo height (#4218 )	2026-04-28 14:59:45 +02:00
Zeno Kapitein	01e1c2ae6a	Add space between ask button and content (#4217 )	2026-04-28 14:59:14 +02:00
Zeno Kapitein	65558cfbb1	Redesign search results (#4198 ) Co-authored-by: Nicolas Dorseuil <nicolas@gitbook.io>	2026-04-28 14:49:46 +02:00
conico974	10d894ce19	Integrate local search functionality (#4078 ) Co-authored-by: Copilot <copilot@github.com>	2026-04-28 14:14:47 +02:00
Samy Pessé	d1a2958212	Pass visitor session to streamAskQuestion (#4211 )	2026-04-24 21:07:46 +02:00
Viktor Renkema	894b6adc4c	Support marks colors for text and background (#4212 )	2026-04-24 17:23:10 +02:00
Nolann B.	b3b819f8e5	Disable MCP server when MCP page action is off (#4210 )	2026-04-23 18:01:43 +02:00
spastorelli	2b98af0cc0	Fix not found pages showing duplicate trademark badges (#4209 )	2026-04-23 16:31:40 +01:00
Samy Pessé	54a56ed772	Remove rollout for agent ask (#4208 )	2026-04-23 14:48:06 +02:00
Samy Pessé	071627d4f0	Improve the footer for agent to query the docs (#4206 )	2026-04-22 22:56:28 +02:00
Samy Pessé	7595706b92	Allow AI agents to ask questions using ?ask= (#4205 )	2026-04-22 08:43:57 +02:00