Update SearchContainer.tsx

Co-authored-by: Zeno Kapitein <zeno@gitbook.io>

.changeset/big-rockets-sniff.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Improve `Button` and `ButtonGroup` styling

.changeset/breezy-toes-raise.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix scroll of page outline

.changeset/chatty-rivers-move.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Support "objectivec" as alias for Objective C syntax

.changeset/curly-pears-study.md

@@ -0,0 +1,5 @@
+---
+"gitbook": minor
+---
+
+Support custom AI providers

.changeset/eleven-melons-smash.md

@@ -0,0 +1,5 @@
+---
+"@gitbook/browser-types": minor
+---
+
+First version of the public package for typing script integrations.

.changeset/fifty-houses-reflect.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fixes to `PageAside`

.changeset/honest-eagles-judge.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Tweaks to AIChatButton and AIChatInput

.changeset/modern-laws-kick.md

@@ -0,0 +1,5 @@
+---
+"gitbook": minor
+---
+
+Allow integrations to provide tools to the Docs Assistant

.changeset/moody-badgers-teach.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Improve vertical alignment of site items and fix floating page aside

.changeset/orange-buses-provide.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix search bar layout shift caused by ToC

.changeset/rude-tomatoes-hunt.md

@@ -0,0 +1,5 @@
+---
+"gitbook": minor
+---
+
+Emit a <link rel="alternate"> for the markdown version of a page

.changeset/serious-pumas-clap.md

@@ -0,0 +1,5 @@
+---
+'gitbook': patch
+---
+
+Support new coverDefinitionDark for cards & image type

.changeset/soft-bikes-warn.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Clear AI chat properly

.changeset/spicy-baboons-buy.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix bug in search highlight in GBO

.changeset/tough-beers-own.md

@@ -0,0 +1,6 @@
+---
+"@gitbook/openapi-parser": patch
+"gitbook": patch
+---
+
+Improve OpenAPI parsing errors

.changeset/young-goats-begin.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix Custom logo not rendering on the published site

bun.lock

@@ -10,6 +10,17 @@
         "vercel": "^39.3.0",
       },
     },
+    "packages/browser-types": {
+      "name": "@gitbook/browser-types",
+      "version": "0.3.1",
+      "dependencies": {
+        "@gitbook/api": "catalog:",
+        "@gitbook/icons": "workspace:",
+      },
+      "devDependencies": {
+        "typescript": "^5.5.3",
+      },
+    },
     "packages/cache-tags": {
       "name": "@gitbook/cache-tags",
       "version": "0.3.1",
@@ -48,9 +59,10 @@
     },
     "packages/gitbook": {
       "name": "gitbook",
-      "version": "0.14.1",
+      "version": "0.15.0",
       "dependencies": {
         "@gitbook/api": "catalog:",
+        "@gitbook/browser-types": "workspace:*",
         "@gitbook/cache-tags": "workspace:*",
         "@gitbook/colors": "workspace:*",
         "@gitbook/emoji-codepoints": "workspace:*",
@@ -60,7 +72,7 @@
         "@gitbook/react-contentkit": "workspace:*",
         "@gitbook/react-math": "workspace:*",
         "@gitbook/react-openapi": "workspace:*",
-        "@opennextjs/cloudflare": "^1.6.2",
+        "@opennextjs/cloudflare": "^1.6.4",
         "@radix-ui/react-checkbox": "^1.0.4",
         "@radix-ui/react-dropdown-menu": "^2.1.12",
         "@radix-ui/react-navigation-menu": "^1.2.3",
@@ -146,7 +158,7 @@
     },
     "packages/icons": {
       "name": "@gitbook/icons",
-      "version": "0.2.1",
+      "version": "0.2.2",
       "bin": {
         "gitbook-icons": "./bin/gitbook-icons.js",
       },
@@ -166,7 +178,7 @@
     },
     "packages/openapi-parser": {
       "name": "@gitbook/openapi-parser",
-      "version": "2.2.2",
+      "version": "3.0.0",
       "dependencies": {
         "@scalar/openapi-parser": "^0.18.0",
         "@scalar/openapi-types": "^0.1.9",
@@ -181,7 +193,7 @@
     },
     "packages/react-contentkit": {
       "name": "@gitbook/react-contentkit",
-      "version": "0.7.2",
+      "version": "0.7.3",
       "dependencies": {
         "@gitbook/api": "catalog:",
         "@gitbook/icons": "workspace:*",
@@ -196,7 +208,7 @@
     },
     "packages/react-math": {
       "name": "@gitbook/react-math",
-      "version": "0.6.0",
+      "version": "0.6.1",
       "bin": {
         "gitbook-math": "./bin/gitbook-math.js",
       },
@@ -213,7 +225,7 @@
     },
     "packages/react-openapi": {
       "name": "@gitbook/react-openapi",
-      "version": "1.3.4",
+      "version": "1.3.5",
       "dependencies": {
         "@gitbook/openapi-parser": "workspace:*",
         "@scalar/api-client-react": "^1.3.16",
@@ -246,7 +258,7 @@
     "react-dom": "^19.0.0",
   },
   "catalog": {
-    "@gitbook/api": "^0.130.0",
+    "@gitbook/api": "^0.136.0",
   },
   "packages": {
     "@ai-sdk/provider": ["@ai-sdk/provider@1.1.0", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-0M+qjp+clUD0R1E5eWQFhxEvWLNaOtGQRUaBn8CUABnSKredagq92hUS9VjOzGsTm37xLfpaxl97AVtbeOsHew=="],
@@ -611,7 +623,9 @@
 
     "@fortawesome/fontawesome-svg-core": ["@fortawesome/fontawesome-svg-core@6.6.0", "", { "dependencies": { "@fortawesome/fontawesome-common-types": "6.6.0" } }, "sha512-KHwPkCk6oRT4HADE7smhfsKudt9N/9lm6EJ5BVg0tD1yPA5hht837fB87F8pn15D8JfTqQOjhKTktwmLMiD7Kg=="],
 
-    "@gitbook/api": ["@gitbook/api@0.130.0", "", { "dependencies": { "event-iterator": "^2.0.0", "eventsource-parser": "^3.0.0" } }, "sha512-nfAPfTISUou+hJPZLrBsuUSSaHEeWB6eZ4adapWAagmaeeA3CpfopDROXcqGJPBHYPfvfLZIGdgyYhyYC3Objw=="],
+    "@gitbook/api": ["@gitbook/api@0.136.0", "", { "dependencies": { "event-iterator": "^2.0.0", "eventsource-parser": "^3.0.0" } }, "sha512-IxNqmXE6yUEUq0IzbenN8S/PcMfgxr4+akY8xh6V5ShI/+U37ixujJHZp2zJq6NdZOdBQoR3UQmhPnvtWrkF7g=="],
+
+    "@gitbook/browser-types": ["@gitbook/browser-types@workspace:packages/browser-types"],
 
     "@gitbook/cache-tags": ["@gitbook/cache-tags@workspace:packages/cache-tags"],
 
@@ -789,9 +803,9 @@
 
     "@octokit/types": ["@octokit/types@14.1.0", "", { "dependencies": { "@octokit/openapi-types": "^25.1.0" } }, "sha512-1y6DgTy8Jomcpu33N+p5w58l6xyt55Ar2I91RPiIA0xCJBXyUAhXCcmZaDWSANiha7R9a6qJJ2CRomGPZ6f46g=="],
 
-    "@opennextjs/aws": ["@opennextjs/aws@3.7.1", "", { "dependencies": { "@ast-grep/napi": "^0.35.0", "@aws-sdk/client-cloudfront": "3.398.0", "@aws-sdk/client-dynamodb": "^3.398.0", "@aws-sdk/client-lambda": "^3.398.0", "@aws-sdk/client-s3": "^3.398.0", "@aws-sdk/client-sqs": "^3.398.0", "@node-minify/core": "^8.0.6", "@node-minify/terser": "^8.0.6", "@tsconfig/node18": "^1.0.1", "aws4fetch": "^1.0.18", "chalk": "^5.3.0", "cookie": "^1.0.2", "esbuild": "0.25.4", "express": "5.0.1", "path-to-regexp": "^6.3.0", "urlpattern-polyfill": "^10.0.0", "yaml": "^2.7.0" }, "bin": { "open-next": "dist/index.js" } }, "sha512-ryV5cQucSJDU0TF3+Jzqn9g0/+zhUZgjNopSnchPvH0SxSAbKkNaNH7SlnWBhykjusqHaFzQ8dfEjcjAq7TJSQ=="],
+    "@opennextjs/aws": ["@opennextjs/aws@3.7.4", "", { "dependencies": { "@ast-grep/napi": "^0.35.0", "@aws-sdk/client-cloudfront": "3.398.0", "@aws-sdk/client-dynamodb": "^3.398.0", "@aws-sdk/client-lambda": "^3.398.0", "@aws-sdk/client-s3": "^3.398.0", "@aws-sdk/client-sqs": "^3.398.0", "@node-minify/core": "^8.0.6", "@node-minify/terser": "^8.0.6", "@tsconfig/node18": "^1.0.1", "aws4fetch": "^1.0.18", "chalk": "^5.3.0", "cookie": "^1.0.2", "esbuild": "0.25.4", "express": "5.0.1", "path-to-regexp": "^6.3.0", "urlpattern-polyfill": "^10.0.0", "yaml": "^2.7.0" }, "bin": { "open-next": "dist/index.js" } }, "sha512-s50dmKrgQ62GliffoI/hGGQVb3q/7ZN5VRa4jJw0ZsEGLfk25XuAulO/ySCYeE7/A23KoAYuhafnKr/h+vxOeQ=="],
 
-    "@opennextjs/cloudflare": ["@opennextjs/cloudflare@1.6.2", "", { "dependencies": { "@dotenvx/dotenvx": "1.31.0", "@opennextjs/aws": "3.7.1", "cloudflare": "^4.4.1", "enquirer": "^2.4.1", "glob": "^11.0.0", "ts-tqdm": "^0.8.6", "yargs": "^18.0.0" }, "peerDependencies": { "wrangler": "^4.24.4" }, "bin": { "opennextjs-cloudflare": "dist/cli/index.js" } }, "sha512-N96OTbp1970NwLP6dNkAzBDrxjthLQ3VXHcjKl8edqNbJ/iT75H60ZYHU/ZZ7gSZQeJluPvPb1n0ZPQ08EooCQ=="],
+    "@opennextjs/cloudflare": ["@opennextjs/cloudflare@1.6.4", "", { "dependencies": { "@dotenvx/dotenvx": "1.31.0", "@opennextjs/aws": "3.7.4", "cloudflare": "^4.4.1", "enquirer": "^2.4.1", "glob": "^11.0.0", "ts-tqdm": "^0.8.6", "yargs": "^18.0.0" }, "peerDependencies": { "wrangler": "^4.24.4" }, "bin": { "opennextjs-cloudflare": "dist/cli/index.js" } }, "sha512-vGEHr1+Dli4BSrs+CM+b2bnXoUdY/GUFiLfdH28UTRHggLMG7cL49M39LtzIVR5D8eqzZ38PDB2CZMn1LJ2gSw=="],
 
     "@opentelemetry/api": ["@opentelemetry/api@1.9.0", "", {}, "sha512-3giAOQvZiH5F9bMlMiv8+GSPMeqg0dbaeo58/0SlA9sxSqZhnUtxzX9/2FzyhS9sWQf5S0GJE0AKBrFqjpeYcg=="],
 

package.json

@@ -34,7 +34,7 @@
     "workspaces": {
         "packages": ["packages/*"],
         "catalog": {
-            "@gitbook/api": "^0.130.0"
+            "@gitbook/api": "^0.136.0"
         }
     },
     "patchedDependencies": {

packages/browser-types/.gitignore

@@ -0,0 +1 @@
+dist/

packages/browser-types/README.md

@@ -0,0 +1,3 @@
+# `@gitbook/browser-types`
+
+Typescript types for the global variables available in a GitBook website. These types can be used by integrations embedding scripts.

packages/browser-types/package.json

@@ -0,0 +1,24 @@
+{
+    "name": "@gitbook/browser-types",
+    "description": "Typescript types for the global variables available in a GitBook website. These types can be used by integrations embedding scripts.",
+    "type": "module",
+    "exports": {
+        ".": {
+            "types": "./dist/index.d.ts",
+            "default": "./dist/index.js"
+        }
+    },
+    "version": "0.0.0",
+    "dependencies": {
+        "@gitbook/api": "catalog:",
+        "@gitbook/icons": "workspace:"
+    },
+    "devDependencies": {
+        "typescript": "^5.5.3"
+    },
+    "scripts": {
+        "build": "tsc",
+        "typecheck": "tsc --noEmit"
+    },
+    "files": ["dist", "README.md", "CHANGELOG.md"]
+}

packages/browser-types/src/index.ts

@@ -0,0 +1,99 @@
+import type { AIToolCallResult, AIToolDefinition } from '@gitbook/api';
+import type { IconName } from '@gitbook/icons';
+
+export type GitBookIntegrationEvent = 'load' | 'unload';
+
+export type GitBookIntegrationEventCallback = (...args: unknown[]) => void;
+
+export type GitBookIntegrationTool = AIToolDefinition & {
+    /**
+     * Confirmation action to be displayed to the user before executing the tool.
+     */
+    confirmation?: {
+        icon?: IconName;
+        label: string;
+    };
+
+    /**
+     * Callback when the tool is executed.
+     * The input is provided by the AI assistant following the input schema of the tool.
+     */
+    execute: (input: object) => Promise<Pick<AIToolCallResult, 'output' | 'summary'>>;
+};
+
+export type GitBookAssistant = {
+    /**
+     * Name of the assistant displayed in the UI.
+     */
+    label: string;
+
+    /**
+     * Icon of the assistant displayed in the UI.
+     * Any FontAwesome icon name is supported.
+     * @example 'sparkle'
+     */
+    icon: string;
+
+    /**
+     * Callback when the assistant is opened.
+     */
+    open: (query?: string) => void;
+
+    /**
+     * Whether to display the triggers for this assistant in the UI.
+     * @default true
+     */
+    ui?: boolean;
+};
+
+export type GitBookGlobal = {
+    /**
+     * Register an event listener.
+     */
+    addEventListener: (
+        type: GitBookIntegrationEvent,
+        func: GitBookIntegrationEventCallback
+    ) => void;
+
+    /**
+     * Remove an event listener.
+     */
+    removeEventListener: (
+        type: GitBookIntegrationEvent,
+        func: GitBookIntegrationEventCallback
+    ) => void;
+
+    /**
+     * Register a custom tool to be exposed to the AI assistant.
+     */
+    registerTool: (tool: GitBookIntegrationTool) => void;
+
+    /**
+     * Register a custom assistant to be available on the site.
+     * Returns a registration object that lets the integration signal readiness
+     * and dispose the assistant when no longer needed.
+     */
+    registerAssistant: (assistant: GitBookAssistant) => GitBookAssistantRegistration;
+};
+
+declare global {
+    interface Window {
+        /**
+         * Global `window.GitBook` object accessible by integrations.
+         */
+        GitBook?: GitBookGlobal;
+    }
+}
+
+export type GitBookAssistantRegistration = ((this: void) => void) & {
+    /**
+     * Call this when the integration has finished initializing and is ready to
+     * receive `open` calls.
+     */
+    ready: () => void;
+
+    /**
+     * Unregister the assistant.
+     */
+    dispose: () => void;
+};

packages/browser-types/tsconfig.json

@@ -0,0 +1,24 @@
+{
+    "compilerOptions": {
+        "target": "esnext",
+        "lib": ["dom", "dom.iterable", "esnext"],
+        "allowJs": true,
+        "skipLibCheck": true,
+        "strict": true,
+        "noEmit": false,
+        "declaration": true,
+        "outDir": "dist",
+        "esModuleInterop": true,
+        "module": "esnext",
+        "moduleResolution": "bundler",
+        "resolveJsonModule": true,
+        "isolatedModules": true,
+        "jsx": "react-jsx",
+        "incremental": true,
+        "types": [
+            "bun-types" // add Bun global
+        ]
+    },
+    "include": ["src/**/*.ts", "src/**/*.tsx"],
+    "exclude": ["node_modules"]
+}

packages/gitbook/e2e/internal.spec.ts

@@ -97,53 +97,9 @@ const searchTestCases: Test[] = [
             await expect(page.getByTestId('search-results')).toBeVisible();
         },
     },
-    {
+    // TODO: Re-enable the following tests when we have fixed the AI Search timing out:
-        name: 'Search - AI Mode: Search - Complete flow',
+    // - Search - AI Mode: Search - Complete flow
-        url: getCustomizationURL({
+    // - Search - AI Mode: Search - URL query (Initial)
-            ai: {
-                mode: CustomizationAIMode.Search,
-            },
-        }),
-        screenshot: false,
-        run: async (page) => {
-            const searchInput = page.getByTestId('search-input');
-
-            // Focus search input, expecting recommended questions
-            await searchInput.focus();
-            await expect(page.getByTestId('search-results')).toBeVisible();
-            const recommendedQuestions = await page
-                .getByTestId('search-recommended-question')
-                .all();
-            await expect(recommendedQuestions.length).toBeGreaterThan(2); // Expect at least 3 questions
-
-            // Fill search input, expecting AI search option
-            await searchInput.fill('What is gitbook?');
-            await expect(page.getByTestId('search-results')).toBeVisible();
-            const aiSearchResult = page.getByTestId('search-ask-question');
-            await expect(aiSearchResult).toBeVisible();
-            await aiSearchResult.click();
-            await expect(page.getByTestId('search-ask-answer')).toBeVisible({
-                timeout: 15_000,
-            });
-        },
-    },
-    {
-        name: 'Search - AI Mode: Search - URL query (Initial)',
-        url: `${getCustomizationURL({
-            ai: {
-                mode: CustomizationAIMode.Search,
-            },
-        })}&q=`,
-        screenshot: false,
-        run: async (page) => {
-            await expect(page.getByTestId('search-input')).toBeFocused();
-            await expect(page.getByTestId('search-results')).toBeVisible();
-            const recommendedQuestions = await page
-                .getByTestId('search-recommended-question')
-                .all();
-            await expect(recommendedQuestions.length).toBeGreaterThan(2); // Expect at least 3 questions
-        },
-    },
     {
         name: 'Search - AI Mode: Search - URL query (Results)',
         url: `${getCustomizationURL({
@@ -158,37 +114,9 @@ const searchTestCases: Test[] = [
             await expect(page.getByTestId('search-results')).toBeVisible();
         },
     },
-    {
+    // TODO: Re-enable the following tests when we have fixed the AI Search timing out:
-        name: 'Ask - AI Mode: Search - URL query (Ask initial)',
+    // - Ask - AI Mode: Search - URL query (Ask initial)
-        url: `${getCustomizationURL({
+    // - Ask - AI Mode: Search - URL query (Ask results)
-            ai: {
-                mode: CustomizationAIMode.Search,
-            },
-        })}&ask=`,
-        screenshot: false,
-        run: async (page) => {
-            await expect(page.getByTestId('search-input')).toBeFocused();
-            await expect(page.getByTestId('search-results')).toBeVisible();
-            const recommendedQuestions = await page
-                .getByTestId('search-recommended-question')
-                .all();
-            await expect(recommendedQuestions.length).toBeGreaterThan(2); // Expect at least 3 questions
-        },
-    },
-    {
-        name: 'Ask - AI Mode: Search - URL query (Ask results)',
-        url: `${getCustomizationURL({
-            ai: {
-                mode: CustomizationAIMode.Search,
-            },
-        })}&ask=What+is+GitBook%3F`,
-        screenshot: false,
-        run: async (page) => {
-            await expect(page.getByTestId('search-input')).toBeFocused();
-            await expect(page.getByTestId('search-input')).toHaveValue('What is GitBook?');
-            await expect(page.getByTestId('search-ask-answer')).toBeVisible();
-        },
-    },
     {
         name: 'Ask - AI Mode: Assistant - Complete flow',
         url: getCustomizationURL({
@@ -202,11 +130,12 @@ const searchTestCases: Test[] = [
 
             // Focus search input, expecting recommended questions
             await searchInput.focus();
-            await expect(page.getByTestId('search-results')).toBeVisible();
+            // TODO: Re-enable this part of the test when we have fixed the AI Search timing out
-            const recommendedQuestions = await page
+            // await expect(page.getByTestId('search-results')).toBeVisible();
-                .getByTestId('search-recommended-question')
+            // const recommendedQuestions = await page
-                .all();
+            //     .getByTestId('search-recommended-question')
-            await expect(recommendedQuestions.length).toBeGreaterThan(2); // Expect at least 3 questions
+            //     .all();
+            // await expect(recommendedQuestions.length).toBeGreaterThan(2); // Expect at least 3 questions
 
             // Fill search input, expecting AI search option
             await searchInput.fill('What is gitbook?');
@@ -225,7 +154,7 @@ const searchTestCases: Test[] = [
         }),
         screenshot: false,
         run: async (page) => {
-            await page.keyboard.press('ControlOrMeta+J');
+            await page.keyboard.press('ControlOrMeta+I');
             await expect(page.getByTestId('ai-chat')).toBeVisible();
             await expect(page.getByTestId('ai-chat-input')).toBeFocused();
         },

packages/gitbook/openNext/customWorkers/middleware.js

@@ -23,6 +23,7 @@ export default class extends WorkerEntrypoint {
                     `gitbook-open-v2-${this.env.STAGE}="${this.env.WORKER_VERSION_ID}"`
                 );
                 return this.env.DEFAULT_WORKER?.fetch(reqOrResp, {
+                    redirect: 'manual',
                     cf: {
                         cacheEverything: false,
                     },
@@ -33,6 +34,9 @@ export default class extends WorkerEntrypoint {
             modifiedUrl.hostname = this.env.PREVIEW_HOSTNAME;
             const nextRequest = new Request(modifiedUrl, reqOrResp);
             return fetch(nextRequest, {
+                // We never want to follow the redirects here.
+                // Redirects are supposed to happen from the client.
+                redirect: 'manual',
                 cf: {
                     cacheEverything: false,
                 },

packages/gitbook/openNext/customWorkers/middlewareWrangler.jsonc

@@ -25,7 +25,8 @@
                 // When deployed locally, we don't have access to the tag cache here,
                 // we should just bypass the cache to go to the server directly
                 "SHOULD_BYPASS_CACHE": "true",
-                "OPEN_NEXT_REQUEST_ID_HEADER": "true"
+                "OPEN_NEXT_REQUEST_ID_HEADER": "true",
+                "GITBOOK_URL": "http://localhost:8771"
             },
             "r2_buckets": [
                 {

packages/gitbook/openNext/incrementalCache.ts

@@ -48,7 +48,13 @@ class GitbookIncrementalCache implements IncrementalCache {
                 const result = (await localCacheEntry.json()) as WithLastModified<
                     CacheValue<CacheType>
                 >;
-                return this.returnNullOn404(result);
+                return this.returnNullOn404({
+                    ...result,
+                    // Because we use tag cache and also invalidate them every time,
+                    // if we get a cache hit, we don't need to check the tag cache as we already know it's not been revalidated
+                    // this should improve performance even further, and reduce costs
+                    shouldBypassTagCache: true,
+                });
             }
 
             const r2Object = await r2.get(cacheKey);

packages/gitbook/package.json

@@ -6,6 +6,7 @@
         "@gitbook/api": "catalog:",
         "@gitbook/cache-tags": "workspace:*",
         "@gitbook/colors": "workspace:*",
+        "@gitbook/browser-types": "workspace:*",
         "@gitbook/emoji-codepoints": "workspace:*",
         "@gitbook/fonts": "workspace:*",
         "@gitbook/icons": "workspace:*",
@@ -13,7 +14,7 @@
         "@gitbook/react-contentkit": "workspace:*",
         "@gitbook/react-math": "workspace:*",
         "@gitbook/react-openapi": "workspace:*",
-        "@opennextjs/cloudflare": "^1.6.2",
+        "@opennextjs/cloudflare": "^1.6.4",
         "@radix-ui/react-checkbox": "^1.0.4",
         "@radix-ui/react-dropdown-menu": "^2.1.12",
         "@radix-ui/react-navigation-menu": "^1.2.3",

packages/gitbook/src/components/AI/index.ts

@@ -1 +1,2 @@
+export * from './useAI';
 export * from './useAIChat';

packages/gitbook/src/components/AI/server-actions/AIToolCallsSummary.tsx

@@ -10,6 +10,7 @@ import type {
     AIToolCallGetPageContent,
     AIToolCallGetPages,
     AIToolCallMCP,
+    AIToolCallOther,
     AIToolCallSearch,
     ContentRef,
 } from '@gitbook/api';
@@ -58,6 +59,8 @@ function getDescriptionForToolCall(toolCall: AIToolCall, context: GitBookSiteCon
             return <DescriptionForGetPagesToolCall toolCall={toolCall} context={context} />;
         case 'mcp':
             return <DescriptionForMCPToolCall toolCall={toolCall} context={context} />;
+        case 'other':
+            return <DescriptionForOtherToolCall toolCall={toolCall} context={context} />;
         default:
             return <>{toolCall.tool}</>;
     }
@@ -112,6 +115,15 @@ function DescriptionForMCPToolCall(props: {
     );
 }
 
+function DescriptionForOtherToolCall(props: {
+    toolCall: AIToolCallOther;
+    context: GitBookSiteContext;
+}) {
+    const { toolCall } = props;
+
+    return <p>{toolCall.summary.text}</p>;
+}
+
 async function DescriptionForSearchToolCall(props: {
     toolCall: AIToolCallSearch;
     context: GitBookSiteContext;
@@ -247,6 +259,8 @@ function getIconForToolCall(toolCall: AIToolCall): IconName {
             return 'magnifying-glass';
         case 'getPages':
             return 'files';
+        case 'other':
+            return (toolCall.summary.icon as IconName) ?? 'hammer';
         default:
             return 'hammer';
     }

packages/gitbook/src/components/AI/server-actions/api.tsx

@@ -1,6 +1,7 @@
 'use server';
 import type { GitBookBaseContext } from '@/lib/context';
 import { fetchServerActionSiteContext } from '@/lib/server-actions';
+import { traceErrorOnly } from '@/lib/tracing';
 import {
     type AIMessage,
     AIMessageRole,
@@ -19,6 +20,7 @@ export async function streamRenderAIMessage(
     rawStream: AsyncIterable<AIStreamResponse>,
     options?: RenderAIMessageOptions
 ) {
+    return traceErrorOnly('AI.streamRenderAIMessage', async () => {
         const message: AIMessage = {
             id: '',
             role: AIMessageRole.Assistant,
@@ -79,7 +81,8 @@ export async function streamRenderAIMessage(
                 case 'response_reasoning':
                 case 'response_document': {
                     updateProcessingMessageStep(event.stepIndex, (step) => {
-                    const container = event.type === 'response_reasoning' ? 'reasoning' : 'content';
+                        const container =
+                            event.type === 'response_reasoning' ? 'reasoning' : 'content';
 
                         step[container] ??= {
                             object: 'document',
@@ -111,6 +114,7 @@ export async function streamRenderAIMessage(
                 ),
             };
         });
+    });
 }
 
 /**

packages/gitbook/src/components/AI/server-actions/chat.ts

@@ -1,7 +1,14 @@
 'use server';
 import { getSiteURLDataFromMiddleware } from '@/lib/middleware';
 import { getServerActionBaseContext } from '@/lib/server-actions';
-import { type AIMessageContext, AIMessageRole, AIModel } from '@gitbook/api';
+import { traceErrorOnly } from '@/lib/tracing';
+import {
+    type AIMessageContext,
+    AIMessageRole,
+    AIModel,
+    type AIToolCallResult,
+    type AIToolDefinition,
+} from '@gitbook/api';
 import { streamRenderAIMessage } from './api';
 import type { RenderAIMessageOptions } from './types';
 
@@ -12,32 +19,44 @@ export async function* streamAIChatResponse({
     message,
     messageContext,
     previousResponseId,
+    toolCall,
+    tools,
     options,
 }: {
-    message: string;
+    message?: string;
     messageContext: AIMessageContext;
     previousResponseId?: string;
+    toolCall?: AIToolCallResult;
+    tools?: AIToolDefinition[];
     options?: RenderAIMessageOptions;
 }) {
+    const { stream } = await traceErrorOnly('AI.streamAIChatResponse', async () => {
         const context = await getServerActionBaseContext();
         const siteURLData = await getSiteURLDataFromMiddleware();
 
         const api = await context.dataFetcher.api();
-    const rawStream = api.orgs.streamAiResponseInSite(siteURLData.organization, siteURLData.site, {
+        const rawStream = api.orgs.streamAiResponseInSite(
-        mode: 'assistant',
+            siteURLData.organization,
-        input: [
+            siteURLData.site,
+            {
+                input: message
+                    ? [
                           {
                               role: AIMessageRole.User,
                               content: message,
                               context: messageContext,
                           },
-        ],
+                      ]
-        output: { type: 'document' },
+                    : [],
                 model: AIModel.ReasoningLow,
                 previousResponseId,
-    });
+                toolCall,
+                tools,
+            }
+        );
 
-    const { stream } = await streamRenderAIMessage(context, rawStream, options);
+        return await streamRenderAIMessage(context, rawStream, options);
+    });
 
     for await (const output of stream) {
         yield output;

packages/gitbook/src/components/AI/server-actions/responses.ts

@@ -1,6 +1,7 @@
 'use server';
 import { getSiteURLDataFromMiddleware } from '@/lib/middleware';
 import { getServerActionBaseContext } from '@/lib/server-actions';
+import { traceErrorOnly } from '@/lib/tracing';
 import { streamRenderAIMessage } from './api';
 import type { RenderAIMessageOptions } from './types';
 
@@ -14,6 +15,7 @@ export async function* streamAIResponseById({
     responseId: string;
     options?: RenderAIMessageOptions;
 }) {
+    const { stream } = await traceErrorOnly('AI.streamAIResponseById', async () => {
         const context = await getServerActionBaseContext();
         const siteURLData = await getSiteURLDataFromMiddleware();
 
@@ -23,7 +25,8 @@ export async function* streamAIResponseById({
             siteURLData.site,
             responseId
         );
-    const { stream } = await streamRenderAIMessage(context, rawStream, options);
+        return await streamRenderAIMessage(context, rawStream, options);
+    });
 
     for await (const output of stream) {
         yield output;

packages/gitbook/src/components/AI/useAI.tsx

@@ -0,0 +1,144 @@
+'use client';
+
+import { CustomizationAIMode } from '@gitbook/api';
+import { Icon, type IconName, IconStyle } from '@gitbook/icons';
+import * as React from 'react';
+import type { ReactNode } from 'react';
+
+import { tString, useLanguage } from '@/intl/client';
+import type { GitBookAssistant } from '@gitbook/browser-types';
+import { useAIChatController, useAIChatState } from '.';
+import { AIChatIcon, getAIChatName } from '../AIChat';
+import { useIntegrationAssistants } from '../Integrations';
+import { useSearch } from '../Search/useSearch';
+
+// Unify assistants configuration context with the assistants hook in one place
+export type AIConfig = {
+    aiMode: CustomizationAIMode;
+    trademark: boolean;
+};
+
+export type Assistant = Omit<GitBookAssistant, 'icon'> & {
+    /**
+     * Unique identifier for the assistant. Generated automatically using Crypto.randomUUID().
+     * @example '123e4567-e89b-12d3-a456-426614174000'
+     */
+    id: string;
+
+    /**
+     * Display mode for the assistant. Currently, only `overlay` is supported for custom assistants.
+     * - `overlay`: Display the assistant in an overlay on top of the page.
+     * - `sidebar`: Display the assistant in a sidebar next to the page. Only supported for the GitBook Assistant.
+     * - `search`: Display the assistant inside the search container. Only supported for GitBook AI Search.
+     * @default 'overlay'
+     */
+    mode?: 'overlay' | 'sidebar' | 'search';
+
+    /**
+     * Icon of the assistant displayed in the UI.
+     */
+    icon: ReactNode;
+
+    /**
+     * Assistant readiness. Built-in assistants are always ready.
+     * Integrations set this to true via the registration's ready() callback.
+     */
+    ready?: boolean;
+};
+
+const AIContext = React.createContext<AIConfig | null>(null);
+
+export function AIContextProvider(props: React.PropsWithChildren<AIConfig>): React.ReactElement {
+    const { aiMode, trademark, children } = props;
+    const value = React.useMemo(() => ({ aiMode, trademark }), [aiMode, trademark]);
+    return <AIContext.Provider value={value}>{children}</AIContext.Provider>;
+}
+
+function useAIConfig(): AIConfig {
+    const ctx = React.useContext(AIContext);
+    if (!ctx) {
+        throw new Error('useAI must be used within AIContextProvider');
+    }
+    return ctx;
+}
+
+type AIContext = {
+    config: AIConfig;
+    assistants: Assistant[];
+};
+
+/**
+ * Unified assistants list combining the built-in GitBook Assistant (when enabled)
+ * with any custom assistants registered at runtime.
+ */
+export function useAI(): AIContext {
+    const config = useAIConfig();
+    const chat = useAIChatState();
+    const chatController = useAIChatController();
+    const language = useLanguage();
+    const [, setSearchState] = useSearch();
+
+    const assistants: Assistant[] = [];
+
+    if (config.aiMode === CustomizationAIMode.Assistant) {
+        assistants.push({
+            id: 'gitbook-assistant',
+            label: getAIChatName(config.trademark),
+            icon: (
+                <AIChatIcon
+                    state={chat.loading ? 'thinking' : 'default'}
+                    trademark={config.trademark}
+                />
+            ),
+            open: (query?: string) => {
+                chatController.open();
+                if (query) {
+                    chatController.postMessage({ message: query });
+                }
+            },
+            ui: true,
+            mode: 'sidebar',
+            ready: true,
+        });
+    } else if (config.aiMode === CustomizationAIMode.Search) {
+        assistants.push({
+            id: 'gitbook-ai-search',
+            label: tString(language, 'ai_chat_context_badge'),
+            icon: (
+                <div className="relative">
+                    <Icon icon="search" className="size-4" />
+                    <Icon
+                        icon="sparkle"
+                        iconStyle={IconStyle.Solid}
+                        className="absolute top-[2.5px] left-[2.6px] size-2"
+                    />
+                </div>
+            ),
+            open: (query?: string) => {
+                if (query) {
+                    setSearchState((prev) =>
+                        prev ? { ...prev, query: null, ask: query, open: true } : null
+                    );
+                }
+            },
+            ui: false,
+            mode: 'search',
+            ready: true,
+        });
+    }
+
+    const integrationAssistants = useIntegrationAssistants();
+    if (integrationAssistants.length > 0) {
+        assistants.push(
+            ...integrationAssistants.map((assistant) => ({
+                ...assistant,
+                icon: <Icon icon={assistant.icon as IconName} className="size-4" />,
+            }))
+        );
+    }
+
+    return {
+        config,
+        assistants,
+    };
+}

packages/gitbook/src/components/AI/useAIChat.tsx

@@ -2,9 +2,15 @@
 
 import * as zustand from 'zustand';
 
-import { AIMessageRole } from '@gitbook/api';
+import {
+    AIMessageRole,
+    type AIStreamResponseToolCallPending,
+    type AIToolCallResult,
+} from '@gitbook/api';
+import type { IconName } from '@gitbook/icons';
 import * as React from 'react';
 import { useTrackEvent } from '../Insights';
+import { integrationsAssistantTools } from '../Integrations';
 import { useSearch } from '../Search';
 import { streamAIChatResponse } from './server-actions';
 import { useAIMessageContextRef } from './useAIMessageContext';
@@ -15,6 +21,21 @@ export type AIChatMessage = {
     query?: string;
 };
 
+export type AIChatPendingTool = {
+    icon?: IconName;
+    label: string;
+
+    /**
+     * Confirm the tool call by calling this function.
+     */
+    confirm: () => Promise<void>;
+
+    /**
+     * Tool call result to cancel it.
+     */
+    cancelToolCall: AIToolCallResult;
+};
+
 export type AIChatState = {
     /**
      * If true, the chat is open.
@@ -46,6 +67,11 @@ export type AIChatState = {
      */
     followUpSuggestions: string[];
 
+    /**
+     * Tools that are pending confirmation to be executed.
+     */
+    pendingTools: AIChatPendingTool[];
+
     /**
      * If true, the session is in progress.
      */
@@ -71,22 +97,17 @@ export type AIChatController = {
 };
 
 // Global state store for AI chat
-const globalState = zustand.create<{
+const globalState = zustand.create<AIChatState>(() => {
-    state: AIChatState;
-    setState: (fn: (state: AIChatState) => Partial<AIChatState>) => void;
-}>((set) => {
     return {
-        state: {
         opened: false,
         responseId: null,
         messages: [],
         query: null,
         followUpSuggestions: [],
+        pendingTools: [],
         loading: false,
         error: false,
         initialQuery: null,
-        },
-        setState: (fn) => set((state) => ({ state: { ...state.state, ...fn(state.state) } })),
     };
 });
 
@@ -94,7 +115,7 @@ const globalState = zustand.create<{
  * Get the current state of the AI chat.
  */
 export function useAIChatState(): AIChatState {
-    const state = zustand.useStore(globalState, (state) => state.state);
+    const state = zustand.useStore(globalState);
     return state;
 }
 
@@ -104,14 +125,13 @@ export function useAIChatState(): AIChatState {
  */
 export function useAIChatController(): AIChatController {
     const messageContextRef = useAIMessageContextRef();
-    const setState = zustand.useStore(globalState, (state) => state.setState);
     const trackEvent = useTrackEvent();
-    const [searchState, setSearchState] = useSearch(true);
+    const [, setSearchState] = useSearch();
 
     // Open AI chat and sync with search state
     const onOpen = React.useCallback(() => {
-        const { initialQuery } = globalState.getState().state;
+        const { initialQuery } = globalState.getState();
-        setState((state) => ({ ...state, opened: true }));
+        globalState.setState((state) => ({ ...state, opened: true }));
 
         // Update search state to show ask mode with first message or current ask value
         setSearchState((prev) => ({
@@ -120,11 +140,11 @@ export function useAIChatController(): AIChatController {
             global: prev?.global ?? false,
             open: false, // Close search popover when opening chat
         }));
-    }, [setState, setSearchState]);
+    }, [setSearchState]);
 
     // Close AI chat and clear ask parameter
     const onClose = React.useCallback(() => {
-        setState((state) => ({ ...state, opened: false }));
+        globalState.setState((state) => ({ ...state, opened: false }));
 
         // Clear ask parameter but keep other search state
         setSearchState((prev) => ({
@@ -133,65 +153,98 @@ export function useAIChatController(): AIChatController {
             global: prev?.global ?? false,
             open: false,
         }));
-    }, [setState, setSearchState]);
+    }, [setSearchState]);
 
-    // Post a message to the AI chat
+    // Stream a message with the AI backend
-    const onPostMessage = React.useCallback(
+    const streamResponse = React.useCallback(
-        async (input: { message: string }) => {
+        async (input: {
-            const { messages } = globalState.getState().state;
+            /** Text message to send to the AI backend */
-
+            message?: string;
-            // For first message, update the ask parameter in URL
+            /** Tool call to send to the AI backend */
-            if (messages.length === 0) {
+            toolCall?: AIToolCallResult;
-                setSearchState((prev) => ({
+        }) => {
-                    ask: input.message,
+            globalState.setState((state) => {
-                    query: prev?.query ?? null,
-                    global: prev?.global ?? false,
-                    open: false,
-                }));
-            }
-
-            trackEvent({ type: 'ask_question', query: input.message });
-
-            // Add user message and placeholder for AI response
-            setState((state) => {
                 return {
                     ...state,
+                    followUpSuggestions: [],
+                    pendingTools: [],
+                    loading: true,
+                    error: false,
                     messages: [
                         ...state.messages,
-                        {
-                            role: AIMessageRole.User,
-                            content: input.message,
-                            query: input.message,
-                        },
                         {
                             role: AIMessageRole.Assistant,
                             content: null, // Placeholder for streaming response
                         },
                     ],
-                    query: input.message,
-                    responseId: null,
-                    followUpSuggestions: [],
-                    loading: true,
-                    error: false,
                 };
             });
 
+            // Execute a tool call
+            const executeToolCall = async (event: AIStreamResponseToolCallPending) => {
+                const integrationTools = integrationsAssistantTools.getState().tools;
+                const toolDef = integrationTools.find((tool) => tool.name === event.toolCall.tool);
+
+                if (!toolDef) {
+                    throw new Error(`Tool ${event.toolCall.tool} not found`);
+                }
+
                 try {
+                    const result = await toolDef.execute(event.toolCall.input);
+                    streamResponse({
+                        toolCall: {
+                            tool: event.toolCall.tool,
+                            toolCallId: event.toolCallId,
+                            output: result.output,
+                            summary: result.summary,
+                        },
+                    });
+                } catch (error) {
+                    streamResponse({
+                        toolCall: {
+                            tool: event.toolCall.tool,
+                            toolCallId: event.toolCallId,
+                            output: {
+                                error: error instanceof Error ? error.message : 'Unknown error',
+                            },
+                            summary: {
+                                icon: 'bomb',
+                                text: 'An error occurred while executing the tool',
+                            },
+                        },
+                    });
+                }
+            };
+
+            let toolToExecute: AIStreamResponseToolCallPending | null = null;
+            try {
+                const integrationTools = integrationsAssistantTools.getState().tools;
                 const stream = await streamAIChatResponse({
                     message: input.message,
+                    toolCall: input.toolCall,
                     messageContext: messageContextRef.current,
-                    previousResponseId: globalState.getState().state.responseId ?? undefined,
+                    previousResponseId: globalState.getState().responseId ?? undefined,
+                    tools: integrationTools.map((tool) => ({
+                        name: tool.name,
+                        description: tool.description,
+                        inputSchema: tool.inputSchema,
+                    })),
                 });
 
                 // Process streaming response
                 for await (const data of stream) {
                     if (!data) continue;
 
+                    if (input.message && globalState.getState().query !== input.message) {
+                        // Chat was cleared, stop processing the stream
+                        break;
+                    }
+
                     const event = data.event;
 
                     switch (event.type) {
                         case 'response_finish': {
-                            setState((state) => ({
+                            globalState.setState((state) => ({
                                 ...state,
                                 responseId: event.responseId,
                                 // Mark as not loading when the response is finished
@@ -202,7 +255,7 @@ export function useAIChatController(): AIChatController {
                             break;
                         }
                         case 'response_followup_suggestion': {
-                            setState((state) => ({
+                            globalState.setState((state) => ({
                                 ...state,
                                 followUpSuggestions: [
                                     ...state.followUpSuggestions,
@@ -211,10 +264,49 @@ export function useAIChatController(): AIChatController {
                             }));
                             break;
                         }
+                        case 'response_tool_call_pending': {
+                            const toolDef = integrationTools.find(
+                                (tool) => tool.name === event.toolCall.tool
+                            );
+                            if (!toolDef) {
+                                throw new Error(`Tool ${event.toolCall.tool} not found`);
+                            }
+
+                            const confirmation = toolDef.confirmation;
+                            if (confirmation) {
+                                globalState.setState((state) => ({
+                                    ...state,
+                                    pendingTools: [
+                                        ...state.pendingTools,
+                                        {
+                                            icon: confirmation.icon,
+                                            label: confirmation.label,
+                                            cancelToolCall: {
+                                                tool: event.toolCall.tool,
+                                                toolCallId: event.toolCallId,
+                                                output: {
+                                                    cancelled: 'User did not confirm the tool call',
+                                                },
+                                                summary: {
+                                                    icon: 'forward',
+                                                    text: `Skipped confirmation of "${confirmation.label}"`,
+                                                },
+                                            },
+                                            confirm: async () => {
+                                                await executeToolCall(event);
+                                            },
+                                        },
+                                    ],
+                                }));
+                            } else {
+                                toolToExecute = event;
+                            }
+                            break;
+                        }
                     }
 
                     // Update the assistant message with streamed content
-                    setState((state) => ({
+                    globalState.setState((state) => ({
                         ...state,
                         messages: [
                             ...state.messages.slice(0, -1),
@@ -226,30 +318,89 @@ export function useAIChatController(): AIChatController {
                     }));
                 }
 
-                setState((state) => ({
+                // Execute the tool call if it doesn't require confirmation
+                if (toolToExecute) {
+                    await executeToolCall(toolToExecute);
+                }
+
+                globalState.setState((state) => ({
                     ...state,
                     loading: false,
                     error: false,
                 }));
             } catch {
-                setState((state) => ({
+                globalState.setState((state) => ({
                     ...state,
                     loading: false,
                     error: true,
                 }));
             }
         },
-        [messageContextRef.current, setState, setSearchState, trackEvent]
+        [messageContextRef.current]
+    );
+
+    // Post a message to the AI chat
+    const onPostMessage = React.useCallback(
+        async (input: { message: string }) => {
+            const { query, messages, pendingTools } = globalState.getState();
+
+            // For first message, update the ask parameter in URL
+            if (messages.length === 0) {
+                setSearchState((prev) => ({
+                    ask: input.message,
+                    query: prev?.query ?? null,
+                    global: prev?.global ?? false,
+                    open: false,
+                }));
+            }
+
+            if (query === input.message) {
+                // Return early if the message is the same as the previous message
+                return;
+            }
+
+            trackEvent({ type: 'ask_question', query: input.message });
+
+            // Add user message and placeholder for AI response
+            globalState.setState((state) => {
+                return {
+                    ...state,
+                    messages: [
+                        ...state.messages,
+                        {
+                            role: AIMessageRole.User,
+                            content: input.message,
+                            query: input.message,
+                        },
+                    ],
+                    query: input.message,
+                    followUpSuggestions: [],
+                    loading: true,
+                    error: false,
+                    initialQuery: state.initialQuery ?? input.message,
+                };
+            });
+
+            const pendingTool = pendingTools[0];
+            streamResponse({
+                message: input.message,
+                // If we had a pending tool call, we need to send it as being cancelled
+                // otherwise the AI will fail to process the message
+                ...(pendingTool ? { toolCall: pendingTool.cancelToolCall } : {}),
+            });
+        },
+        [setSearchState, trackEvent, streamResponse]
     );
 
     // Clear the conversation and reset ask parameter
     const onClear = React.useCallback(() => {
-        setState((state) => ({
+        globalState.setState((state) => ({
             opened: state.opened,
             loading: false,
             messages: [],
             query: null,
             followUpSuggestions: [],
+            pendingTools: [],
             responseId: null,
             error: false,
             initialQuery: null,
@@ -262,47 +413,7 @@ export function useAIChatController(): AIChatController {
             global: prev?.global ?? false,
             open: false,
         }));
-    }, [setState, setSearchState]);
+    }, [setSearchState]);
-
-    // Auto-trigger AI chat when ?ask= parameter appears in URL (only once)
-    React.useEffect(() => {
-        const hasNoAsk = searchState?.ask === undefined || searchState?.ask === null;
-        const hasQuery = searchState?.query !== null;
-
-        // Don't trigger if we have a regular search query active
-        if (hasNoAsk) return;
-        if (hasQuery && searchState.open === false) return;
-
-        // Open the chat when ask parameter appears
-        onOpen();
-
-        // Auto-post the message if ask has content
-        if (searchState?.ask?.trim()) {
-            const trimmedAsk = searchState.ask.trim();
-            const { loading, initialQuery } = globalState.getState().state;
-
-            // Don't trigger if we're already posting a message
-            if (loading) return;
-
-            // Only initialize once per URL ask value
-            if (initialQuery === trimmedAsk) return;
-
-            // Wait for messageContextRef to be defined before proceeding
-            if (!messageContextRef.current?.location) return;
-
-            // Mark this ask value as processed
-            setState((state) => ({ ...state, initialQuery: trimmedAsk }));
-            onPostMessage({ message: trimmedAsk });
-        }
-    }, [
-        searchState?.ask,
-        searchState?.query,
-        searchState?.open,
-        messageContextRef,
-        onOpen,
-        setState,
-        onPostMessage,
-    ]);
 
     return React.useMemo(() => {
         return {

packages/gitbook/src/components/AIActions/AIActions.tsx

@@ -1,12 +1,10 @@
 'use client';
 
-import { useAIChatController } from '@/components/AI/useAIChat';
+import { useAIChatState } from '@/components/AI';
-import { useAIChatState } from '@/components/AI/useAIChat';
+import type { Assistant } from '@/components/AI';
 import { ChatGPTIcon } from '@/components/AIActions/assets/ChatGPTIcon';
 import { ClaudeIcon } from '@/components/AIActions/assets/ClaudeIcon';
 import { MarkdownIcon } from '@/components/AIActions/assets/MarkdownIcon';
-import { getAIChatName } from '@/components/AIChat';
-import { AIChatIcon } from '@/components/AIChat';
 import { Button } from '@/components/primitives/Button';
 import { DropdownMenuItem, useDropdownMenuClose } from '@/components/primitives/DropdownMenu';
 import { tString, useLanguage } from '@/intl/client';
@@ -22,32 +20,21 @@ type AIActionType = 'button' | 'dropdown-menu-item';
 /**
  * Opens our AI Docs Assistant.
  */
-export function OpenDocsAssistant(props: { type: AIActionType; trademark: boolean }) {
+export function OpenAIAssistant(props: { assistant: Assistant; type: AIActionType }) {
-    const { type, trademark } = props;
+    const { assistant, type } = props;
-    const chatController = useAIChatController();
     const chat = useAIChatState();
     const language = useLanguage();
 
     return (
         <AIActionWrapper
             type={type}
-            icon={
+            icon={assistant.icon}
-                <AIChatIcon state={chat.loading ? 'thinking' : 'default'} trademark={trademark} />
+            label={assistant.label}
-            }
-            label={tString(language, 'ai_chat_ask', getAIChatName(trademark))}
             shortLabel={tString(language, 'ask')}
-            description={tString(language, 'ai_chat_ask_about_page', getAIChatName(trademark))}
+            description={tString(language, 'ai_chat_ask_about_page', assistant.label)}
             disabled={chat.loading}
             onClick={() => {
-                // Open the chat if it's not already open
+                assistant.open(tString(language, 'ai_chat_suggested_questions_about_this_page'));
-                if (!chat.opened) {
-                    chatController.open();
-                }
-
-                // Send the "What is this page about?" message
-                chatController.postMessage({
-                    message: tString(language, 'ai_chat_suggested_questions_about_this_page'),
-                });
             }}
         />
     );
@@ -231,13 +218,15 @@ function AIActionWrapper(props: {
                 }
                 size="xsmall"
                 variant="secondary"
-                label={shortLabel || label}
+                label={label ?? shortLabel}
                 className="bg-tint-base text-sm"
                 onClick={onClick}
                 href={href}
                 target={href ? '_blank' : undefined}
                 disabled={disabled || loading}
-            />
+            >
+                {shortLabel}
+            </Button>
         );
     }
 
@@ -251,13 +240,13 @@ function AIActionWrapper(props: {
         >
             <div className="flex size-5 items-center justify-center text-tint">
                 {loading ? (
-                    <Icon icon="spinner-third" className="size-4 animate-spin" />
+                    <Icon icon="spinner-third" className="size-4 shrink-0 animate-spin" />
                 ) : icon ? (
                     typeof icon === 'string' ? (
                         <Icon
                             icon={icon as IconName}
                             iconStyle={IconStyle.Regular}
-                            className="size-4 fill-transparent stroke-current"
+                            className="size-4 shrink-0 fill-transparent stroke-current"
                         />
                     ) : (
                         icon
@@ -268,9 +257,9 @@ function AIActionWrapper(props: {
             <div className="flex flex-1 flex-col gap-0.5">
                 <span className="flex items-center gap-2 text-tint-strong">
                     <span className="truncate font-medium text-sm">{label}</span>
-                    {href ? <Icon icon="arrow-up-right" className="size-3" /> : null}
+                    {href ? <Icon icon="arrow-up-right" className="size-3 shrink-0" /> : null}
                 </span>
-                {description && <span className="truncate text-tint text-xs">{description}</span>}
+                {description && <span className="text-tint text-xs">{description}</span>}
             </div>
         </DropdownMenuItem>
     );

packages/gitbook/src/components/AIActions/AIActionsDropdown.tsx

@@ -2,21 +2,21 @@
 
 import {
     CopyMarkdown,
-    OpenDocsAssistant,
+    OpenAIAssistant,
     OpenInLLM,
     ViewAsMarkdown,
 } from '@/components/AIActions/AIActions';
 import { Button, ButtonGroup } from '@/components/primitives/Button';
 import { DropdownMenu, DropdownMenuSeparator } from '@/components/primitives/DropdownMenu';
+import { tString, useLanguage } from '@/intl/client';
 import type { SiteCustomizationSettings } from '@gitbook/api';
-
 import { Icon } from '@gitbook/icons';
 import { useRef } from 'react';
+import { useAI } from '../AI';
 
 interface AIActionsDropdownProps {
     markdownPageUrl: string;
-    withAIChat?: boolean;
+    className?: string;
-    trademark: boolean;
     actions: SiteCustomizationSettings['pageActions'];
 }
 
@@ -25,9 +25,11 @@ interface AIActionsDropdownProps {
  */
 export function AIActionsDropdown(props: AIActionsDropdownProps) {
     const ref = useRef<HTMLDivElement>(null);
+    const assistants = useAI().assistants.filter((assistant) => assistant.ui === true);
+    const language = useLanguage();
 
-    return (
+    return assistants.length > 0 || props.actions.markdown || props.actions.externalAI ? (
-        <ButtonGroup ref={ref}>
+        <ButtonGroup ref={ref} className={props.className}>
             <DefaultAction {...props} />
             {props.actions.markdown || props.actions.externalAI ? (
                 <DropdownMenu
@@ -41,6 +43,7 @@ export function AIActionsDropdown(props: AIActionsDropdownProps) {
                                     className="size-3 transition-transform group-data-[state=open]/button:rotate-180"
                                 />
                             }
+                            label={tString(language, 'more')}
                             iconOnly
                             size="xsmall"
                             variant="secondary"
@@ -52,26 +55,31 @@ export function AIActionsDropdown(props: AIActionsDropdownProps) {
                 </DropdownMenu>
             ) : null}
         </ButtonGroup>
-    );
+    ) : null;
 }
 
 /**
  * The content of the dropdown menu.
  */
 function AIActionsDropdownMenuContent(props: AIActionsDropdownProps) {
-    const { markdownPageUrl, withAIChat, trademark, actions } = props;
+    const { markdownPageUrl, actions } = props;
+    const assistants = useAI().assistants.filter((assistant) => assistant.ui === true);
 
     return (
         <>
-            {withAIChat ? (
+            {assistants.map((assistant) => (
-                <OpenDocsAssistant trademark={trademark} type="dropdown-menu-item" />
+                <OpenAIAssistant
-            ) : null}
+                    key={assistant.label}
+                    assistant={assistant}
+                    type="dropdown-menu-item"
+                />
+            ))}
 
             {actions.markdown ? (
                 <>
                     <DropdownMenuSeparator className="first:hidden" />
                     <CopyMarkdown
-                        isDefaultAction={!withAIChat}
+                        isDefaultAction={!assistants.length}
                         markdownPageUrl={markdownPageUrl}
                         type="dropdown-menu-item"
                     />
@@ -94,16 +102,17 @@ function AIActionsDropdownMenuContent(props: AIActionsDropdownProps) {
  * A default action shown as a quick-access button beside the dropdown menu
  */
 function DefaultAction(props: AIActionsDropdownProps) {
-    const { markdownPageUrl, withAIChat, trademark, actions } = props;
+    const { markdownPageUrl, actions } = props;
+    const assistants = useAI().assistants.filter((assistant) => assistant.ui === true);
 
-    if (withAIChat) {
+    if (assistants.length) {
-        return <OpenDocsAssistant trademark={trademark} type="button" />;
+        return <OpenAIAssistant assistant={assistants[0]} type="button" />;
     }
 
     if (actions.markdown) {
         return (
             <CopyMarkdown
-                isDefaultAction={!withAIChat}
+                isDefaultAction={!assistants.length}
                 markdownPageUrl={markdownPageUrl}
                 type="button"
             />

packages/gitbook/src/components/AIChat/AIChat.tsx

@@ -9,7 +9,7 @@ import {
     type AIChatState,
     useAIChatController,
     useAIChatState,
-} from '../AI/useAIChat';
+} from '../AI';
 import { useNow } from '../hooks';
 import { Button } from '../primitives';
 import { DropdownMenu, DropdownMenuItem } from '../primitives/DropdownMenu';
@@ -24,7 +24,7 @@ export function AIChat(props: { trademark: boolean }) {
     const chatController = useAIChatController();
 
     useHotkeys(
-        'mod+j',
+        'mod+i',
         (e) => {
             e.preventDefault();
             chatController.open();

packages/gitbook/src/components/AIChat/AIChatButton.tsx

@@ -2,42 +2,37 @@
 import { useLanguage } from '@/intl/client';
 import { t } from '@/intl/translate';
 import { tcls } from '@/lib/tailwind';
-import { useAIChatController, useAIChatState } from '../AI/useAIChat';
+import type { Assistant } from '../AI';
 import { Button } from '../primitives';
 import { KeyboardShortcut } from '../primitives/KeyboardShortcut';
-import { getAIChatName } from './AIChat';
-import { AIChatIcon } from './AIChatIcon';
 
 /**
  * Button to open/close the AI chat.
  */
-export function AIChatButton(props: { trademark: boolean }) {
+export function AIChatButton(props: {
-    const { trademark } = props;
+    assistant: Assistant;
-    const chatController = useAIChatController();
+    showLabel?: boolean;
-    const chat = useAIChatState();
+}) {
+    const { assistant, showLabel = true } = props;
     const language = useLanguage();
 
     return (
         <Button
-            icon={<AIChatIcon trademark={trademark} />}
+            icon={assistant.icon}
             data-testid="ai-chat-button"
-            iconOnly
+            iconOnly={!showLabel}
-            size="default"
+            size="medium"
             variant="header"
             className={tcls('h-9 px-2.5')}
             label={
                 <div className="flex items-center gap-2">
-                    {t(language, 'ai_chat_ask', getAIChatName(trademark))}
+                    {t(language, 'ai_chat_ask', assistant.label)}
-                    <KeyboardShortcut keys={['mod', 'j']} className="border-tint-11 text-tint-1" />
+                    <KeyboardShortcut keys={['mod', 'i']} className="border-tint-11 text-tint-1" />
                 </div>
             }
-            onClick={() => {
+            onClick={() => assistant.open()}
-                if (chat.opened) {
+        >
-                    chatController.close();
+            {showLabel ? <span className="max-md:hidden">{t(language, 'ask')}</span> : null}
-                } else {
+        </Button>
-                    chatController.open();
-                }
-            }}
-        />
     );
 }

packages/gitbook/src/components/AIChat/AIChatInput.tsx

@@ -45,7 +45,7 @@ export function AIChatInput(props: {
     }, [disabled, loading]);
 
     useHotkeys(
-        'mod+j',
+        'mod+i',
         (e) => {
             e.preventDefault();
             inputRef.current?.focus();
@@ -54,7 +54,7 @@ export function AIChatInput(props: {
     );
 
     return (
-        <div className="relative flex flex-col overflow-hidden circular-corners:rounded-2xl rounded-corners:rounded-md bg-tint-base/9 ring-1 ring-tint-subtle backdrop-blur-lg transition-all depth-subtle:has-[textarea:focus]:shadow-lg has-[textarea:focus]:ring-2 has-[textarea:focus]:ring-primary-hover contrast-more:bg-tint-base">
+        <div className="depth-subtle:has-[textarea:focus]:-translate-y-px relative flex flex-col overflow-hidden circular-corners:rounded-2xl rounded-corners:rounded-md bg-tint-base/9 depth-subtle:shadow-sm shadow-tint/6 ring-1 ring-tint-subtle backdrop-blur-lg transition-all depth-subtle:has-[textarea:focus]:shadow-lg has-[textarea:focus]:shadow-primary-subtle has-[textarea:focus]:ring-2 has-[textarea:focus]:ring-primary-hover contrast-more:bg-tint-base dark:shadow-tint-1">
             <textarea
                 ref={inputRef}
                 disabled={disabled || loading}
@@ -99,10 +99,12 @@ export function AIChatInput(props: {
                     }
                 }}
             />
+            {!disabled ? (
                 <div className="absolute top-2.5 right-3 animate-[fadeIn_0.2s_0.5s_ease-in-out_both] peer-focus:hidden">
-                <KeyboardShortcut keys={['mod', 'j']} />
+                    <KeyboardShortcut keys={['mod', 'i']} className="bg-tint-base" />
                 </div>
-            <div className="absolute inset-x-0 bottom-0 flex items-center px-2 py-2">
+            ) : null}
+            <div className="absolute inset-x-0 bottom-0 flex items-center gap-2 px-2 py-2">
                 <Tooltip
                     label={
                         <div className="flex flex-col gap-3 p-2">
@@ -126,11 +128,11 @@ export function AIChatInput(props: {
                     }
                     arrow
                 >
-                    <div className="flex cursor-help items-center gap-1 circular-corners:rounded-2xl rounded-corners:rounded-md px-2 py-1 text-tint/7 text-xs transition-all hover:bg-tint">
+                    <div className="flex cursor-help items-center gap-1 circular-corners:rounded-2xl rounded-corners:rounded-md px-2.5 py-1.5 text-tint/7 text-xs transition-all hover:bg-tint">
                         <span className="-ml-1 circular-corners:rounded-2xl rounded-corners:rounded-sm bg-tint-11/7 px-1 py-0.5 font-mono font-semibold text-[0.65rem] text-contrast-tint-11 leading-none">
                             {t(language, 'ai_chat_context_badge')}
                         </span>{' '}
-                        <span>{t(language, 'ai_chat_context_title')}</span>
+                        <span className="leading-none">{t(language, 'ai_chat_context_title')}</span>
                     </div>
                 </Tooltip>
                 <Button

packages/gitbook/src/components/AIChat/AIChatMessages.tsx

@@ -1,7 +1,8 @@
 import { tcls } from '@/lib/tailwind';
 import { AIMessageRole } from '@gitbook/api';
 import type React from 'react';
-import type { AIChatController, AIChatState } from '../AI/useAIChat';
+import type { AIChatController, AIChatState } from '../AI';
+import { AIChatToolConfirmations } from './AIChatToolConfirmations';
 import { AIResponseFeedback } from './AIResponseFeedback';
 import { AIChatFollowupSuggestions } from './AiChatFollowupSuggestions';
 
@@ -44,7 +45,7 @@ export function AIChatMessages(props: {
                         {message.content ? message.content : null}
 
                         {isLastMessage && chat.loading ? (
-                            <div className="flex w-full animate-fade-in-slow flex-wrap gap-2 group-has-[.has-content]/message:hidden">
+                            <div className="flex w-full animate-fade-in-slow flex-wrap gap-2">
                                 {Array.from({ length: 7 }).map((_, index) => (
                                     <div
                                         key={index}
@@ -60,13 +61,18 @@ export function AIChatMessages(props: {
 
                         {isLastMessage ? (
                             <>
-                                {!chat.loading && !chat.error && chat.query && chat.responseId && (
+                                {!chat.loading &&
+                                !chat.error &&
+                                chat.query &&
+                                chat.responseId &&
+                                chat.pendingTools.length === 0 ? (
                                     <AIResponseFeedback
                                         responseId={chat.responseId}
                                         query={chat.query}
                                         className="-ml-1 -mt-4"
                                     />
-                                )}
+                                ) : null}
+                                <AIChatToolConfirmations chat={chat} />
                                 <AIChatFollowupSuggestions
                                     chat={chat}
                                     chatController={chatController}

packages/gitbook/src/components/AIChat/AIChatSuggestedQuestions.tsx

@@ -1,5 +1,5 @@
 import { tString, useLanguage } from '@/intl/client';
-import type { AIChatController } from '../AI/useAIChat';
+import type { AIChatController } from '../AI';
 import { Button } from '../primitives';
 
 export default function AIChatSuggestedQuestions(props: { chatController: AIChatController }) {
@@ -17,7 +17,6 @@ export default function AIChatSuggestedQuestions(props: { chatController: AIChat
             {DEFAULT_SUGGESTED_QUESTIONS.map((question, index) => (
                 <Button
                     key={question}
-                    label={question}
                     variant="secondary"
                     size="medium"
                     className="max-w-full animate-[present_500ms_both] whitespace-normal"

packages/gitbook/src/components/AIChat/AIChatToolConfirmations.tsx

@@ -0,0 +1,36 @@
+import type { AIChatState } from '../AI';
+import { Button } from '../primitives';
+
+/**
+ * Display buttons to confirm tool calls.
+ */
+export function AIChatToolConfirmations(props: {
+    chat: AIChatState;
+}) {
+    const { chat } = props;
+
+    if (chat.pendingTools.length === 0) {
+        return null;
+    }
+
+    return (
+        <div className="flex w-full flex-wrap justify-end gap-2">
+            {chat.pendingTools.map((tool, index) => (
+                <Button
+                    key={index}
+                    onClick={() => {
+                        tool.confirm();
+                    }}
+                    label={tool.label}
+                    className="whitespace-normal! max-w-full animate-[present_500ms_both] text-left ring-1 ring-tint-subtle"
+                    size="medium"
+                    variant="primary"
+                    icon={tool.icon}
+                    style={{
+                        animationDelay: `${250 + Math.min(index * 50, 150)}ms`,
+                    }}
+                />
+            ))}
+        </div>
+    );
+}

packages/gitbook/src/components/Ads/renderAd.tsx

@@ -4,6 +4,7 @@ import type { SiteInsightsAd, SiteInsightsAdPlacement } from '@gitbook/api';
 import { headers } from 'next/headers';
 
 import { getServerActionBaseContext } from '@/lib/server-actions';
+import { traceErrorOnly } from '@/lib/tracing';
 import { AdClassicRendering } from './AdClassicRendering';
 import { AdCoverRendering } from './AdCoverRendering';
 import { AdPixels } from './AdPixels';
@@ -40,6 +41,7 @@ interface FetchPlaceholderAdOptions {
  * and properly access user-agent and IP.
  */
 export async function renderAd(options: FetchAdOptions) {
+    return traceErrorOnly('Ads.renderAd', async () => {
         const [context, result] = await Promise.all([
             getServerActionBaseContext(),
             options.source === 'live' ? fetchAd(options) : getPlaceholderAd(),
@@ -74,6 +76,7 @@ export async function renderAd(options: FetchAdOptions) {
             ),
             insightsAd,
         };
+    });
 }
 
 async function fetchAd({

packages/gitbook/src/components/AutoRefreshContent/server-actions.ts

@@ -2,6 +2,7 @@
 
 import { getDataOrNull } from '@/lib/data';
 import { getServerActionBaseContext } from '@/lib/server-actions';
+import { traceErrorOnly } from '@/lib/tracing';
 
 /**
  * Return true if a change-request has been updated.
@@ -11,6 +12,7 @@ export async function hasContentBeenUpdated(props: {
     changeRequestId: string;
     revisionId: string;
 }) {
+    return traceErrorOnly('AutoRefreshContent.hasContentBeenUpdated', async () => {
         const context = await getServerActionBaseContext();
         const changeRequest = await getDataOrNull(
             context.dataFetcher.getChangeRequest({
@@ -22,4 +24,5 @@ export async function hasContentBeenUpdated(props: {
             return false;
         }
         return changeRequest.revision !== props.revisionId;
+    });
 }

packages/gitbook/src/components/DocumentView/CodeBlock/CodeBlockRenderer.tsx

@@ -43,7 +43,7 @@ export const CodeBlockRenderer = forwardRef(function CodeBlockRenderer(
             </div>
             <CopyCodeButton
                 codeId={id}
-                style="z-2 mt-2 mr-2 self-start justify-self-end rounded-md bg-transparent p-1 text-tint text-xs leading-none opacity-0 ring-1 ring-tint backdrop-blur-md transition-opacity duration-75 [grid-area:2/1] hover:ring-tint-hover group-hover/codeblock:opacity-11"
+                style="z-2 mt-2 mr-2 self-start justify-self-end leading-none opacity-0 backdrop-blur-md [grid-area:2/1] group-hover/codeblock:opacity-11"
             />
             <pre
                 className={tcls(

packages/gitbook/src/components/DocumentView/CodeBlock/CopyCodeButton.tsx

@@ -2,6 +2,7 @@
 
 import React from 'react';
 
+import { Button } from '@/components/primitives';
 import { t, useLanguage } from '@/intl/client';
 import { type ClassValue, tcls } from '@/lib/tailwind';
 
@@ -41,9 +42,14 @@ export function CopyCodeButton(props: { codeId: string; style: ClassValue }) {
     };
 
     return (
-        <button onClick={onClick} className={tcls(style, 'print:hidden')}>
+        <Button
+            size="xsmall"
+            variant="secondary"
+            onClick={onClick}
+            className={tcls(style, 'translate-y-0!', 'print:hidden')}
+        >
             {t(language, copied ? 'code_copied' : 'code_copy')}
-        </button>
+        </Button>
     );
 }
 

packages/gitbook/src/components/DocumentView/CodeBlock/highlight.ts

@@ -136,6 +136,9 @@ const syntaxAliases: Record<string, BundledLanguage> = {
     // "Parser" language does not exist in Shiki, but it's used in GitBook
     // The closest language is "Blade"
     parser: 'blade',
+
+    // From GitBook App we receive "objectivec" instead of "objective-c"
+    objectivec: 'objective-c',
 };
 
 function checkIsBundledLanguage(lang: string): lang is BundledLanguage {

packages/gitbook/src/components/DocumentView/Integration/server-actions.tsx

@@ -1,6 +1,7 @@
 'use server';
 
 import { getServerActionBaseContext } from '@/lib/server-actions';
+import { traceErrorOnly } from '@/lib/tracing';
 import type { RenderIntegrationUI } from '@gitbook/api';
 import { ContentKitOutput } from '@gitbook/react-contentkit';
 import { contentKitServerContext } from './contentkit';
@@ -19,6 +20,7 @@ export async function renderIntegrationUi({
     };
     request: RenderIntegrationUI;
 }) {
+    return traceErrorOnly('DocumentView.renderIntegrationUi', async () => {
         const serverAction = await getServerActionBaseContext();
         const output = await fetchSafeIntegrationUI(serverAction, {
             integrationName: renderContext.integrationName,
@@ -35,4 +37,5 @@ export async function renderIntegrationUi({
             children: <ContentKitOutput output={output.data} context={contentKitServerContext} />,
             output: output.data,
         };
+    });
 }

packages/gitbook/src/components/DocumentView/OpenAPI/style.css

@@ -147,7 +147,7 @@
 }
 
 .openapi-column-preview-body {
-    @apply flex flex-col gap-4 sticky top-4 site-header:top-20 site-header:xl:max-2xl:top-32 site-header-sections:top-32 site-header-sections:xl:max-2xl:top-44 print-mode:static;
+    @apply flex flex-col gap-4 sticky top-[calc(var(--toc-top-offset)+5rem)] print-mode:static;
 }
 
 .openapi-column-preview pre {

packages/gitbook/src/components/DocumentView/ReusableContent.tsx

@@ -26,18 +26,15 @@ export async function ReusableContent(props: BlockProps<DocumentBlockReusableCon
     }
 
     const { reusableContent } = resolved;
-    if (
+    if (!reusableContent) {
-        !reusableContent ||
-        !('document' in reusableContent.revisionReusableContent) ||
-        !reusableContent.revisionReusableContent.document
-    ) {
         return null;
     }
 
     const document = await getDataOrNull(
-        dataFetcher.getDocument({
+        dataFetcher.getRevisionReusableContentDocument({
             spaceId: reusableContent.context.space.id,
-            documentId: reusableContent.revisionReusableContent.document,
+            revisionId: reusableContent.context.revisionId,
+            reusableContentId: reusableContent.revisionReusableContent.id,
         })
     );
 

packages/gitbook/src/components/DocumentView/Table/RecordCard.tsx

@@ -1,18 +1,16 @@
+import { LinkBox, LinkOverlay } from '@/components/primitives';
+import { Image } from '@/components/utils';
+import { type ResolvedContentRef, resolveContentRef } from '@/lib/references';
+import { tcls } from '@/lib/tailwind';
 import {
     type ContentRef,
     type DocumentTableViewCards,
     SiteInsightsLinkPosition,
 } from '@gitbook/api';
-
-import { LinkBox, LinkOverlay } from '@/components/primitives';
-import { Image } from '@/components/utils';
-import { resolveContentRef } from '@/lib/references';
-import { tcls } from '@/lib/tailwind';
-
 import { RecordColumnValue } from './RecordColumnValue';
 import type { TableRecordKV, TableViewProps } from './Table';
 import { RecordCardStyles } from './styles';
-import { getRecordValue } from './utils';
+import { getRecordCardCovers } from './utils';
 
 export async function RecordCard(
     props: TableViewProps<DocumentTableViewCards> & {
@@ -21,25 +19,21 @@ export async function RecordCard(
 ) {
     const { view, record, context, block, isOffscreen } = props;
 
-    const coverFile = view.coverDefinition
+    const { dark, light } = getRecordCardCovers(record[1], view);
-        ? getRecordValue<string[]>(record[1], view.coverDefinition)?.[0]
-        : null;
     const targetRef = view.targetDefinition
         ? (record[1].values[view.targetDefinition] as ContentRef)
         : null;
 
-    const [cover, target] = await Promise.all([
+    const [lightCover, darkCover, target] = await Promise.all([
-        coverFile && context.contentContext
+        light && context.contentContext ? resolveContentRef(light, context.contentContext) : null,
-            ? resolveContentRef({ kind: 'file', file: coverFile }, context.contentContext)
+        dark && context.contentContext ? resolveContentRef(dark, context.contentContext) : null,
-            : null,
         targetRef && context.contentContext
             ? resolveContentRef(targetRef, context.contentContext)
             : null,
     ]);
 
-    const coverIsSquareOrPortrait =
+    const darkCoverIsSquareOrPortrait = isSquareOrPortrait(darkCover);
-        cover?.file?.dimensions &&
+    const lightCoverIsSquareOrPortrait = isSquareOrPortrait(lightCover);
-        cover.file?.dimensions?.width / cover.file?.dimensions?.height <= 1;
 
     const body = (
         <div
@@ -63,23 +57,32 @@ export async function RecordCard(
                 // On mobile, check if we can display the cover responsively or not:
                 // - If the file has a landscape aspect ratio, we display it normally
                 // - If the file is square or portrait, we display it left with 40% of the card width
-                coverIsSquareOrPortrait
+                lightCoverIsSquareOrPortrait || darkCoverIsSquareOrPortrait
                     ? [
-                          'grid-cols-[40%__1fr]',
+                          lightCoverIsSquareOrPortrait
-                          'min-[432px]:grid-cols-none',
+                              ? 'grid-cols-[40%__1fr] min-[432px]:grid-cols-none min-[432px]:grid-rows-[auto_1fr]'
-                          'min-[432px]:grid-rows-[auto_1fr]',
+                              : '',
-                      ]
+                          darkCoverIsSquareOrPortrait
+                              ? 'dark:grid-cols-[40%__1fr] dark:min-[432px]:grid-cols-none dark:min-[432px]:grid-rows-[auto_1fr]'
+                              : '',
+                      ].filter(Boolean)
                     : 'grid-rows-[auto_1fr]'
             )}
         >
-            {cover ? (
+            {lightCover ? (
                 <Image
                     alt="Cover"
                     sources={{
                         light: {
-                            src: cover.href,
+                            src: lightCover.href,
-                            size: cover.file?.dimensions,
+                            size: lightCover.file?.dimensions,
                         },
+                        dark: darkCover
+                            ? {
+                                  src: darkCover.href,
+                                  size: darkCover.file?.dimensions,
+                              }
+                            : null,
                     }}
                     sizes={[
                         {
@@ -92,8 +95,15 @@ export async function RecordCard(
                         'w-full',
                         'h-full',
                         'object-cover',
-                        coverIsSquareOrPortrait
+                        lightCoverIsSquareOrPortrait || darkCoverIsSquareOrPortrait
-                            ? ['min-[432px]:h-auto', 'min-[432px]:aspect-video']
+                            ? [
+                                  lightCoverIsSquareOrPortrait
+                                      ? 'min-[432px]:aspect-video min-[432px]:h-auto'
+                                      : '',
+                                  darkCoverIsSquareOrPortrait
+                                      ? 'dark:min-[432px]:aspect-video dark:min-[432px]:h-auto'
+                                      : '',
+                              ].filter(Boolean)
                             : ['h-auto', 'aspect-video']
                     )}
                     priority={isOffscreen ? 'lazy' : 'high'}
@@ -167,3 +177,16 @@ export async function RecordCard(
 
     return <div className={tcls(RecordCardStyles)}>{body}</div>;
 }
+
+/**
+ * Check if a file is square or portrait.
+ */
+function isSquareOrPortrait(contentRef: ResolvedContentRef | null) {
+    const file = contentRef?.file;
+
+    if (!file || !file.dimensions) {
+        return false;
+    }
+
+    return file.dimensions?.width / file.dimensions?.height <= 1;
+}

packages/gitbook/src/components/DocumentView/Table/RecordColumnValue.tsx

@@ -174,7 +174,6 @@ export async function RecordColumnValue<Tag extends React.ElementType = 'div'>(
                             <StyledLink
                                 key={index}
                                 href={ref.href}
-                                target="_blank"
                                 className="flex flex-row items-center gap-2"
                                 insights={
                                     ref.file
@@ -329,6 +328,50 @@ export async function RecordColumnValue<Tag extends React.ElementType = 'div'>(
                 </Tag>
             );
         }
+        case 'image': {
+            const image = context.contentContext
+                ? await resolveContentRef(value as ContentRef, context.contentContext)
+                : null;
+
+            if (!image) {
+                return null;
+            }
+
+            return (
+                <Tag className={tcls('text-base')} aria-labelledby={ariaLabelledBy}>
+                    <StyledLink
+                        href={image.href}
+                        className="flex flex-row items-center gap-2"
+                        insights={
+                            image.file
+                                ? {
+                                      type: 'link_click',
+                                      link: {
+                                          target: value as ContentRef,
+                                          position: SiteInsightsLinkPosition.Content,
+                                      },
+                                  }
+                                : undefined
+                        }
+                    >
+                        <Image
+                            style={['max-h-lh', 'h-lh']}
+                            alt={image.text}
+                            sizes={[{ width: 24 }]}
+                            resize={context.contentContext?.imageResizer}
+                            sources={{
+                                light: {
+                                    src: image.href,
+                                    size: image.file?.dimensions,
+                                },
+                            }}
+                            priority="lazy"
+                        />
+                        {image.text}
+                    </StyledLink>
+                </Tag>
+            );
+        }
         default:
             assertNever(definition);
     }

packages/gitbook/src/components/DocumentView/Table/utils.ts

@@ -1,4 +1,11 @@
-import type { ContentRef, DocumentTableDefinition, DocumentTableRecord } from '@gitbook/api';
+import type {
+    ContentRef,
+    ContentRefFile,
+    ContentRefURL,
+    DocumentTableDefinition,
+    DocumentTableRecord,
+    DocumentTableViewCards,
+} from '@gitbook/api';
 import assertNever from 'assert-never';
 
 /**
@@ -12,6 +19,57 @@ export function getRecordValue<T extends number | string | boolean | string[] |
     return record.values[definitionId];
 }
 
+/**
+ * Get the covers for a record card.
+ * Returns both the light and dark covers.
+ * The light cover is a string or a content ref (image or files column type).
+ * The dark cover is a content ref (image column type).
+ */
+export function getRecordCardCovers(
+    record: DocumentTableRecord,
+    view: DocumentTableViewCards
+): { [key in 'light' | 'dark']: ContentRefFile | ContentRefURL | null } {
+    return {
+        light: (() => {
+            if (!view.coverDefinition) {
+                return null;
+            }
+
+            const value = getRecordValue(record, view.coverDefinition) as
+                | ContentRefFile
+                | ContentRefURL
+                | string[];
+
+            if (Array.isArray(value)) {
+                if (value.length === 0) {
+                    return null;
+                }
+
+                if (typeof value[0] === 'string') {
+                    return { kind: 'file', file: value[0] };
+                }
+            }
+
+            return value as ContentRefFile | ContentRefURL;
+        })(),
+        dark: (() => {
+            if (!view.coverDefinitionDark) {
+                return null;
+            }
+
+            const value = getRecordValue(record, view.coverDefinitionDark) as
+                | ContentRefFile
+                | ContentRefURL;
+
+            if (!value) {
+                return null;
+            }
+
+            return value;
+        })(),
+    };
+}
+
 /**
  * Get the text alignment for a column.
  */

packages/gitbook/src/components/Header/Header.tsx

@@ -110,7 +110,6 @@ export function Header(props: {
                                               'lg:max-w-lg',
                                               'lg:ml-[max(calc((100%-18rem-48rem)/2),1.5rem)]', // container (100%) - sidebar (18rem) - content (48rem)
                                               'xl:ml-[max(calc((100%-18rem-48rem-14rem-3rem)/2),1.5rem)]', // container (100%) - sidebar (18rem) - content (48rem) - outline (14rem) - margin (3rem)
-                                              'lg:page-no-toc:ml-[max(calc((100%-18rem-48rem-18rem-3rem)/2),0rem)]',
                                               'md:mr-auto',
                                               'order-last',
                                               'md:order-[unset]',

packages/gitbook/src/components/Header/HeaderLogo.tsx

@@ -55,9 +55,10 @@ export async function HeaderLogo(props: HeaderLogoProps) {
                         'lg:max-w-64',
                         'lg:site-header-none:page-no-toc:max-w-56',
                         'max-h-10',
-                        'lg:max-h-12',
                         'h-full',
-                        'w-auto'
+                        'w-full',
+                        'object-contain',
+                        'object-left'
                     )}
                 />
             ) : (

packages/gitbook/src/components/Integrations/LoadIntegrations.tsx

@@ -1,23 +1,95 @@
 'use client';
 
 import * as React from 'react';
+import * as zustand from 'zustand';
+
+import type {
+    GitBookGlobal,
+    GitBookIntegrationEvent,
+    GitBookIntegrationEventCallback,
+    GitBookIntegrationTool,
+} from '@gitbook/browser-types';
+import type { Assistant } from '../AI';
+
+const events = new Map<GitBookIntegrationEvent, GitBookIntegrationEventCallback[]>();
+
+export const integrationsAssistantTools = zustand.createStore<{
+    /**
+     * Tools exposed to the assistant by integrations
+     */
+    tools: GitBookIntegrationTool[];
+}>(() => {
+    return {
+        tools: [],
+    };
+});
+
+export const integrationAssistants = zustand.createStore<Array<Assistant>>(() => []);
 
 if (typeof window !== 'undefined') {
-    window.GitBook = {
+    const gitbookGlobal: GitBookGlobal = {
-        events: new Map(),
         addEventListener: (event, callback) => {
-            const handlers = window.GitBook?.events.get(event) ?? [];
+            const handlers = events.get(event) ?? [];
             handlers.push(callback);
-            window.GitBook?.events.set(event, handlers);
+            events.set(event, handlers);
         },
         removeEventListener: (event, callback) => {
-            const handlers = window.GitBook?.events.get(event) ?? [];
+            const handlers = events.get(event) ?? [];
             const index = handlers.indexOf(callback);
             if (index !== -1) {
                 handlers.splice(index, 1);
             }
         },
+        registerTool: (tool) => {
+            integrationsAssistantTools.setState((state) => ({
+                tools: [...state.tools, tool],
+            }));
+        },
+        registerAssistant: (assistant) => {
+            const id = window.crypto.randomUUID();
+            // Add assistant with ready=false until the integration signals readiness
+            integrationAssistants.setState(
+                (state) => [
+                    ...state,
+                    { ...assistant, id, ui: assistant.ui ?? true, mode: 'overlay', ready: false },
+                ],
+                true
+            );
+
+            const ready = () => {
+                integrationAssistants.setState(
+                    (state) =>
+                        state.map((assistant) =>
+                            assistant.id === id ? { ...assistant, ready: true } : assistant
+                        ),
+                    true
+                );
             };
+
+            const dispose = () => {
+                integrationAssistants.setState(
+                    (state) => state.filter((assistant) => assistant.id !== id),
+                    true
+                );
+            };
+
+            const registration = (() => dispose()) as ((this: void) => void) & {
+                ready: () => void;
+                dispose: () => void;
+            };
+            registration.ready = ready;
+            registration.dispose = dispose;
+            return registration;
+        },
+    };
+    window.GitBook = gitbookGlobal;
+}
+
+/**
+ * Get the current state of the assistants.
+ */
+export function useIntegrationAssistants(): Array<Assistant> {
+    return zustand.useStore(integrationAssistants);
 }
 
 /**
@@ -33,7 +105,6 @@ export function LoadIntegrations() {
 /**
  * Client function to dispatch a GitBook event.
  */
-function dispatchGitBookIntegrationEvent(type: GitBookIntegrationEvent, ...args: any[]) {
+function dispatchGitBookIntegrationEvent(type: GitBookIntegrationEvent, ...args: unknown[]) {
-    const handlers = window.GitBook?.events.get(type) || [];
+    events.get(type)?.forEach((handler) => handler(...args));
-    handlers.forEach((handler) => handler(...args));
 }

packages/gitbook/src/components/PageAside/PageAside.tsx

@@ -32,33 +32,28 @@ export function PageAside(props: {
     withPageFeedback: boolean;
 }) {
     const { page, document, withPageFeedback, context } = props;
-    const { customization, site, space } = context;
+    const { customization, site } = context;
-    const language = getSpaceLanguage(customization);
 
-    const pdfHref = context.linker.toPathInSpace(
-        `~gitbook/pdf?${getPDFURLSearchParams({
-            page: page.id,
-            only: true,
-            limit: 100,
-        }).toString()}`
-    );
     return (
         <aside
             className={tcls(
                 'group/aside',
                 'hidden',
+                'pt-8',
+
                 'xl:flex',
                 'xl:max-3xl:chat-open:hidden',
                 'xl:max-3xl:chat-open:opacity-0',
                 'max-w-56',
+
+                // Animate the width of the aside when the chat is open
                 'xl:max-3xl:*:chat-open:w-56',
                 'xl:max-3xl:chat-open:max-w-0',
                 'xl:max-3xl:chat-open:ml-0',
 
-                'motion-safe:xl:transition-all motion-safe:xl:duration-300',
+                'motion-safe:xl:transition-[width,max-width,margin,opacity,display] motion-safe:xl:duration-300',
                 'motion-safe:transition-discrete',
 
-                'flex-col',
                 'basis-56',
                 'xl:ml-12',
                 'grow-0',
@@ -68,6 +63,7 @@ export function PageAside(props: {
                 'text-tint',
                 'contrast-more:text-tint-strong',
                 'sticky',
+
                 // Without header
                 'lg:top-0',
                 'lg:max-h-screen',
@@ -80,36 +76,77 @@ export function PageAside(props: {
                 'lg:site-header-sections:top-27',
                 'lg:site-header-sections:max-h-[calc(100vh-6.75rem)]',
 
+                // Client-side dynamic positioning (CSS vars applied by script)
+                'lg:[html[style*="--toc-top-offset"]_&]:top-(--toc-top-offset)!',
+                'lg:[html[style*="--toc-height"]_&]:max-h-(--toc-height)!',
+
                 // When in api page mode, we display it as an overlay on non-large resolutions
                 'xl:max-2xl:page-api-block:z-10',
                 'xl:max-2xl:page-api-block:fixed',
                 'xl:max-2xl:page-api-block:right-8',
-                'xl:max-2xl:page-api-block:w-56',
+                'xl:max-2xl:page-api-block:w-60',
-                'xl:max-2xl:page-api-block:bg-tint/9',
+                'xl:max-2xl:page-api-block:max-w-60',
-                'xl:max-2xl:contrast-more:page-api-block:bg-tint',
+                'xl:max-2xl:page-api-block:pb-8',
-                'xl:max-2xl:page-api-block:backdrop-blur-lg',
+                'xl:max-2xl:page-api-block:pt-10',
+                'xl:max-2xl:[body:has(.openapi-block):has(.page-has-ancestors)_&]:pt-6.5'
+            )}
+        >
+            <div
+                className={tcls(
+                    'flex flex-col',
+                    'overflow-hidden',
+                    'w-full',
+                    'xl:max-2xl:rounded-corners:page-api-block:rounded-md',
+                    'xl:max-2xl:circular-corners:page-api-block:rounded-xl',
                     'xl:max-2xl:page-api-block:border',
                     'xl:max-2xl:page-api-block:border-tint',
+                    'xl:max-2xl:page-api-block:bg-tint/9',
+                    'xl:max-2xl:page-api-block:backdrop-blur-lg',
+                    'xl:max-2xl:contrast-more:page-api-block:bg-tint',
                     'xl:max-2xl:page-api-block:hover:shadow-lg',
                     'xl:max-2xl:page-api-block:hover:shadow-tint-12/1',
                     'xl:max-2xl:dark:page-api-block:hover:shadow-tint-1/1',
-                'xl:max-2xl:page-api-block:rounded-md',
+                    'xl:max-2xl:page-api-block:not-hover:*:hidden'
-                'xl:max-2xl:page-api-block:h-auto',
-                'xl:max-2xl:page-api-block:my-9',
-                'page-api-block:px-2',
-                'page-api-block:py-1.5'
                 )}
             >
+                <PageAsideHeader context={context} />
                 {page.layout.outline ? (
-                <>
+                    <div className="overflow-y-auto border-tint xl:max-2xl:page-api-block:border-t">
+                        {document ? (
+                            <React.Suspense fallback={null}>
+                                <PageAsideSections document={document} context={context} />
+                            </React.Suspense>
+                        ) : null}
+                        <PageAsideActions
+                            page={page}
+                            withPageFeedback={withPageFeedback}
+                            context={context}
+                        />
+                    </div>
+                ) : null}
+                {customization.themes.toggeable || site.ads ? (
+                    <PageAsideFooter context={context} />
+                ) : null}
+            </div>
+        </aside>
+    );
+}
+
+function PageAsideHeader(props: { context: GitBookSiteContext }) {
+    const { context } = props;
+    const language = getSpaceLanguage(context.customization);
+
+    return (
         <div
             className={tcls(
                 'hidden',
-                            'xl:max-2xl:page-api-block:flex',
+                'xl:max-2xl:page-api-block:flex!',
                 'text-xs',
                 'tracking-wide',
                 'font-semibold',
                 'uppercase',
+                'px-2',
+                'py-1.5',
 
                 'flex-row',
                 'items-center',
@@ -118,45 +155,41 @@ export function PageAside(props: {
         >
             <Icon icon="block-quote" className={tcls('size-3')} />
             {t(language, 'on_this_page')}
-                        <Icon
+            <Icon icon="chevron-down" className={tcls('size-3', 'opacity-6', 'ml-auto')} />
-                            icon="chevron-down"
-                            className={tcls(
-                                'size-3',
-                                'opacity-6',
-                                'ml-auto',
-                                'xl:max-2xl:page-api-block:group-hover/aside:hidden'
-                            )}
-                        />
         </div>
-                    <div
+    );
-                        className={tcls(
+}
-                            'overflow-y-auto',
-                            'overflow-x-visible',
 
-                            'flex',
+async function PageAsideSections(props: { document: JSONDocument; context: GitBookSiteContext }) {
-                            'flex-col',
+    const { document, context } = props;
-                            'shrink',
-                            'pb-12',
 
-                            'sticky',
+    const sections = await getDocumentSections(context, document);
-                            'lg:top:0',
-                            'lg:site-header:top-16',
-                            'lg:site-header-sections:top-27',
 
-                            'gap-6',
+    return sections.length > 1 ? (
-                            'pt-10',
+        <div className="-mt-8 pt-8 pb-5 empty:hidden xl:max-2xl:page-api-block:mt-0 xl:max-2xl:page-api-block:p-2">
+            <ScrollSectionsList sections={sections} />
+        </div>
+    ) : null;
+}
 
-                            'xl:max-2xl:page-api-block:py-0',
+function PageAsideActions(props: {
-                            // Hide it for api page, until hovered
+    withPageFeedback: boolean;
-                            'xl:max-2xl:page-api-block:hidden',
+    context: GitBookSiteContext;
-                            'xl:max-2xl:page-api-block:group-hover/aside:flex'
+    page: RevisionPageDocument;
-                        )}
+}) {
-                    >
+    const { page, withPageFeedback, context } = props;
-                        {document ? (
+    const { customization, space } = context;
-                            <React.Suspense fallback={null}>
+    const language = getSpaceLanguage(customization);
-                                <PageAsideSections document={document} context={context} />
+
-                            </React.Suspense>
+    const pdfHref = context.linker.toPathInSpace(
-                        ) : null}
+        `~gitbook/pdf?${getPDFURLSearchParams({
+            page: page.id,
+            only: true,
+            limit: 100,
+        }).toString()}`
+    );
+
+    return (
         <div
             className={tcls(
                 'flex',
@@ -166,9 +199,9 @@ export function PageAside(props: {
                 'border-t',
                 'first:border-none',
                 'border-tint-subtle',
-                                'py-6',
+                'py-5',
                 'first:pt-0',
-                                'xl:max-2xl:page-api-block:px-3',
+                'xl:max-2xl:page-api-block:p-5',
                 'empty:hidden'
             )}
         >
@@ -223,27 +256,31 @@ export function PageAside(props: {
                             'py-2'
                         )}
                     >
-                                        <Icon
+                        <Icon icon="file-pdf" className={tcls('size-4', 'mr-1.5')} />
-                                            icon="file-pdf"
-                                            className={tcls('size-4', 'mr-1.5')}
-                                        />
                         {t(language, 'pdf_download')}
                     </a>
                 </div>
             ) : null}
         </div>
-                    </div>
+    );
-                </>
+}
-            ) : null}
+
+async function PageAsideFooter(props: { context: GitBookSiteContext }) {
+    const { context } = props;
+    const { customization, site, space } = context;
+
+    return (
         <div
             className={tcls(
-                    'sticky bottom-0 z-10 mt-auto flex flex-col bg-tint-base theme-gradient-tint:bg-gradient-tint theme-gradient:bg-gradient-primary theme-muted:bg-tint-subtle pb-4 xl:max-2xl:page-api-block:hidden xl:max-2xl:page-api-block:pb-0 xl:max-2xl:page-api-block:group-hover/aside:flex [html.sidebar-filled.theme-bold.tint_&]:bg-tint-subtle',
+                'sticky bottom-0 z-10 mt-auto flex flex-col',
-                    'xl:max-2xl:page-api-block:bg-transparent'
+                'bg-tint-base theme-gradient-tint:bg-gradient-tint theme-gradient:bg-gradient-primary theme-muted:bg-tint-subtle [html.sidebar-filled.theme-bold.tint_&]:bg-tint-subtle',
+                'border-tint-subtle xl:max-2xl:page-api-block:border-t xl:max-2xl:page-api-block:p-2',
+                'py-4'
             )}
         >
             {/* Mode Switcher */}
             {customization.themes.toggeable ? (
-                    <div className="mt-4 flex items-center justify-end">
+                <div className="flex items-center justify-end">
                     <React.Suspense fallback={null}>
                         <ThemeToggler />
                     </React.Suspense>
@@ -260,18 +297,9 @@ export function PageAside(props: {
                 style={site?.ads ? 'mt-4' : undefined}
             />
         </div>
-        </aside>
     );
 }
 
-async function PageAsideSections(props: { document: JSONDocument; context: GitBookSiteContext }) {
-    const { document, context } = props;
-
-    const sections = await getDocumentSections(context, document);
-
-    return sections.length > 1 ? <ScrollSectionsList sections={sections} /> : null;
-}
-
 function getGitSyncName(space: Space): string {
     if (space.gitSync?.installationProvider === 'github') {
         return 'GitHub';

packages/gitbook/src/components/PageAside/ScrollSectionsList.tsx

@@ -40,7 +40,7 @@ export function ScrollSectionsList(props: { sections: DocumentSection[] }) {
     });
 
     return (
-        <ul className={tcls('sidebar-list-line:border-l', 'border-tint-subtle')}>
+        <ul className="flex flex-col border-tint-subtle sidebar-list-line:border-l">
             {sections.map((section) => (
                 <motion.li
                     key={section.id}
@@ -50,6 +50,8 @@ export function ScrollSectionsList(props: { sections: DocumentSection[] }) {
                         'relative',
                         'h-fit',
                         'mt-2',
+                        'first:mt-0',
+                        'mb-0.5',
                         section.depth > 1 && ['ml-3', 'my-0', 'sidebar-list-line:ml-0']
                     )}
                 >

packages/gitbook/src/components/PageBody/PageBody.tsx

@@ -50,7 +50,7 @@ export function PageBody(props: {
             <main
                 className={tcls(
                     'relative min-w-0 flex-1',
-                    'mx-auto max-w-screen-2xl py-11',
+                    'mx-auto max-w-screen-2xl py-8',
                     // Allow words to break if they are too long.
                     'break-anywhere',
                     pageWidthWide ? 'page-width-wide 2xl:px-8' : 'page-width-default',

packages/gitbook/src/components/PageBody/PageCover.tsx

@@ -43,13 +43,16 @@ export async function PageCover(props: {
 
     const getImage = async (resolved: ResolvedContentRef | null, returnNull = false) => {
         if (!resolved && returnNull) return;
-        const [attrs, size] = await Promise.all([
+        // If we don't have a size for the image, we want to calculate it so that we can use srcSet
-            getImageAttributes({
+        const size =
+            resolved?.file?.dimensions ??
+            (await context.imageResizer?.getImageSize(resolved?.href || defaultPageCover.src, {}));
+        const attrs = await getImageAttributes({
             sizes,
             source: resolved
                 ? {
                       src: resolved.href,
-                          size: resolved.file?.dimensions ?? null,
+                      size: size ?? null,
                   }
                 : {
                       src: defaultPageCover.src,
@@ -60,14 +63,10 @@ export async function PageCover(props: {
                   },
             quality: 100,
             resize: context.imageResizer ?? false,
-            }),
+        });
-            context.imageResizer
-                ?.getImageSize(resolved?.href || defaultPageCover.src, {})
-                .then((size) => size ?? undefined),
-        ]);
         return {
             ...attrs,
-            size,
+            size: size ?? undefined,
         };
     };
 

packages/gitbook/src/components/PageBody/PageCoverImage.tsx

@@ -44,6 +44,8 @@ export function PageCoverImage({ imgs, y }: { imgs: Images; y: number }) {
         <div className="h-full w-full overflow-hidden" ref={containerRef}>
             <img
                 src={imgs.light.src}
+                srcSet={imgs.light.srcSet}
+                sizes={imgs.light.sizes}
                 fetchPriority="high"
                 alt="Page cover"
                 className={tcls('w-full', 'object-cover', imgs.dark ? 'dark:hidden' : '')}
@@ -55,6 +57,8 @@ export function PageCoverImage({ imgs, y }: { imgs: Images; y: number }) {
             {imgs.dark && (
                 <img
                     src={imgs.dark.src}
+                    srcSet={imgs.dark.srcSet}
+                    sizes={imgs.dark.sizes}
                     fetchPriority="low"
                     alt="Page cover"
                     className={tcls('w-full', 'object-cover', 'dark:inline', 'hidden')}

packages/gitbook/src/components/PageBody/PageHeader.tsx

@@ -1,5 +1,4 @@
 import { AIActionsDropdown } from '@/components/AIActions/AIActionsDropdown';
-import { isAIChatEnabled } from '@/components/utils/isAIChatEnabled';
 import type { GitBookSiteContext } from '@/lib/context';
 import type { AncestorRevisionPage } from '@/lib/pages';
 import { tcls } from '@/lib/tailwind';
@@ -20,13 +19,9 @@ export async function PageHeader(props: {
         return null;
     }
 
-    const withAIChat = isAIChatEnabled(context);
+    const pageActions = context.customization.pageActions;
 
-    const pageActions = context.customization.pageActions ?? {
+    const hasAncestors = ancestors.length > 0;
-        // TODO: After 25/07/2025, we can remove this default values as the cache will be updated
-        markdown: true,
-        externalAI: true,
-    };
 
     return (
         <header
@@ -37,27 +32,23 @@ export async function PageHeader(props: {
                 'mb-6',
                 'space-y-3',
                 'page-api-block:ml-0',
-                'page-api-block:max-w-full'
+                'page-api-block:max-w-full',
+                hasAncestors ? 'page-has-ancestors' : 'page-no-ancestors'
             )}
         >
-            {page.layout.tableOfContents &&
+            {page.layout.tableOfContents ? (
                 // Show page actions if *any* of the actions are enabled
-            (withAIChat || pageActions.markdown || pageActions.externalAI) ? (
-                <div
-                    className={tcls(
-                        'float-right mb-2 ml-4 xl:max-2xl:page-api-block:mr-58',
-                        ancestors.length > 0 ? '-mt-2' : '-mt-3 xs:mt-2'
-                    )}
-                >
                 <AIActionsDropdown
                     markdownPageUrl={`${context.linker.toAbsoluteURL(context.linker.toPathInSpace(page.path))}.md`}
-                        withAIChat={withAIChat}
-                        trademark={context.customization.trademark.enabled}
                     actions={pageActions}
+                    className={tcls(
+                        'float-right ml-4 xl:max-2xl:page-api-block:mr-62',
+                        hasAncestors ? '-my-1.5' : '-mt-3 xs:mt-2'
+                    )}
                 />
-                </div>
             ) : null}
-            {ancestors.length > 0 && (
+
+            {hasAncestors && (
                 <nav aria-label="Breadcrumb">
                     <ol className={tcls('flex', 'flex-wrap', 'items-center', 'gap-2', 'text-tint')}>
                         {ancestors.map((breadcrumb, index) => {

packages/gitbook/src/components/PageFeedback/PageFeedbackForm.tsx

@@ -8,7 +8,7 @@ import { t, tString } from '@/intl/translate';
 import { tcls } from '@/lib/tailwind';
 
 import { useTrackEvent } from '../Insights';
-import { Button } from '../primitives';
+import { Button, ButtonGroup } from '../primitives';
 
 const MAX_COMMENT_LENGTH = 512;
 
@@ -61,8 +61,7 @@ export function PageFeedbackForm(props: {
         <div className={tcls('flex flex-col gap-3 text-sm', className)}>
             <div className="flex flex-wrap items-center gap-2">
                 <p>{t(languages, 'was_this_helpful')}</p>
-                <div className="rounded-full border border-tint-subtle bg-tint-base contrast-more:border-tint-12">
+                <ButtonGroup className="rounded-full border border-tint bg-tint-base">
-                    <div className="flex">
                     <RatingButton
                         rating={PageFeedbackRating.Good}
                         label={tString(languages, 'was_this_helpful_positive')}
@@ -84,8 +83,7 @@ export function PageFeedbackForm(props: {
                         active={rating === PageFeedbackRating.Bad}
                         disabled={rating !== undefined}
                     />
-                    </div>
+                </ButtonGroup>
-                </div>
             </div>
             {rating ? (
                 <div className="flex flex-col gap-2">
@@ -94,7 +92,7 @@ export function PageFeedbackForm(props: {
                             <textarea
                                 ref={inputRef}
                                 name="comment"
-                                className="max-h-40 min-h-16 grow rounded-sm straight-corners:rounded-none bg-tint-base p-2 ring-1 ring-tint ring-inset placeholder:text-sm placeholder:text-tint contrast-more:ring-tint-12 contrast-more:placeholder:text-tint-strong"
+                                className="mx-0.5 max-h-40 min-h-16 grow rounded-sm straight-corners:rounded-none bg-tint-base p-2 ring-1 ring-tint ring-inset placeholder:text-sm placeholder:text-tint contrast-more:ring-tint-12 contrast-more:placeholder:text-tint-strong"
                                 placeholder={tString(languages, 'was_this_helpful_comment')}
                                 aria-label={tString(languages, 'was_this_helpful_comment')}
                                 onChange={(e) => setComment(e.target.value)}
@@ -138,7 +136,7 @@ function RatingButton(
         active: boolean;
     } & ButtonHTMLAttributes<HTMLButtonElement>
 ) {
-    const { rating, label, onClick, active, ...attr } = props;
+    const { rating, label, onClick, active, disabled, ...attr } = props;
 
     const ratingIcon =
         {
@@ -148,23 +146,18 @@ function RatingButton(
         }[rating] ?? null;
 
     return (
-        <button
+        <Button
-            className={tcls(
+            className="first:pl-2.5 last:pr-2.5"
-                'p-2 first:rounded-l-full first:pl-2.5 last:rounded-r-full last:pr-2.5 hover:bg-primary-hover hover:text-primary-strong',
-                'disabled:cursor-not-allowed disabled:hover:bg-inherit disabled:hover:text-inherit dark:disabled:hover:text-inherit',
-                'ring-tint contrast-more:hover:ring-1',
-                active
-                    ? 'bg-primary-active text-primary-strong disabled:hover:bg-primary-active disabled:hover:text-primary-strong contrast-more:ring-2 contrast-more:hover:ring-2'
-                    : 'disabled:opacity-7 contrast-more:disabled:ring-0'
-            )}
             type="button"
-            {...attr}
+            variant="blank"
-            aria-label={label}
+            label={label}
-            title={label}
             onClick={onClick}
-        >
+            active={active}
-            {ratingIcon}
+            disabled={disabled}
-        </button>
+            iconOnly
+            {...attr}
+            icon={ratingIcon}
+        />
     );
 }
 

packages/gitbook/src/components/RootLayout/ClientContexts.tsx

@@ -5,6 +5,7 @@ import type React from 'react';
 import { TranslateContext } from '@/intl/client';
 import type { TranslationLanguage } from '@/intl/translations';
 import { TooltipProvider } from '@radix-ui/react-tooltip';
+import { HashProvider } from '../hooks';
 import { LoadingStateProvider } from '../primitives/LoadingStateProvider';
 
 export function ClientContexts(props: {
@@ -16,7 +17,9 @@ export function ClientContexts(props: {
     return (
         <TranslateContext.Provider value={language}>
             <TooltipProvider delayDuration={200}>
+                <HashProvider>
                     <LoadingStateProvider>{children}</LoadingStateProvider>
+                </HashProvider>
             </TooltipProvider>
         </TranslateContext.Provider>
     );

packages/gitbook/src/components/Search/HighlightQuery.tsx

@@ -15,6 +15,8 @@ export function HighlightQuery(props: {
         query,
         text,
         highlight = [
+            '-z-1',
+            'relative',
             'text-bold',
             'bg-primary',
             'text-contrast-primary',
@@ -33,7 +35,7 @@ export function HighlightQuery(props: {
     const matches = matchString(text, query);
 
     return (
-        <span className={tcls('whitespace-break-spaces')}>
+        <span className={tcls('relative z-2 whitespace-break-spaces')}>
             {matches.map((entry, index) => (
                 <span key={index} className={tcls(entry.match ? highlight : null)}>
                     {entry.text}

packages/gitbook/src/components/Search/SearchContainer.tsx

@@ -1,9 +1,11 @@
 'use client';
 
-import { CustomizationAIMode } from '@gitbook/api';
+import { CustomizationSearchStyle } from '@gitbook/api';
 import { useRouter } from 'next/navigation';
 import React, { useRef } from 'react';
 import { useHotkeys } from 'react-hotkeys-hook';
+import { useAI } from '../AI';
+import { AIChatButton } from '../AIChat';
 import { useTrackEvent } from '../Insights';
 import { useIsMobile } from '../hooks/useIsMobile';
 import { Popover } from '../primitives';
@@ -16,10 +18,10 @@ import { SearchScopeToggle } from './SearchScopeToggle';
 import { useSearch } from './useSearch';
 
 interface SearchContainerProps {
-    spaceId: string;
+    siteSpaceId: string;
     spaceTitle: string;
     isMultiVariants: boolean;
-    aiMode: CustomizationAIMode;
+    style: CustomizationSearchStyle;
     className?: string;
 }
 
@@ -27,10 +29,11 @@ interface SearchContainerProps {
  * Client component to render the search input and results.
  */
 export function SearchContainer(props: SearchContainerProps) {
-    const { spaceId, spaceTitle, isMultiVariants, aiMode, className } = props;
+    const { siteSpaceId, spaceTitle, isMultiVariants, style, className } = props;
 
-    const withAIChat = aiMode === CustomizationAIMode.Assistant;
+    const { assistants } = useAI();
-    const [state, setSearchState] = useSearch(withAIChat);
+
+    const [state, setSearchState] = useSearch();
     const searchAsk = useSearchAskState();
     const router = useRouter();
     const trackEvent = useTrackEvent();
@@ -39,34 +42,43 @@ export function SearchContainer(props: SearchContainerProps) {
 
     const isMobile = useIsMobile();
 
-    // Derive open state from search state
+    const withAI = assistants.length > 0;
-    const open = state?.open ?? false;
+    const withSearchAI = assistants.filter((assistant) => assistant.mode === 'search').length > 0;
 
+    // Handle initial ask state on page load, once assistants are ready
+    const initialRef = React.useRef(state?.ask === undefined || state?.ask === null); // If ask is not set on page load, we will never trigger
     React.useEffect(() => {
-        if (state?.ask && aiMode === CustomizationAIMode.Assistant) {
+        if (initialRef.current) return;
-            // Close the pop-over when we switch to “ask” mode
+        if (assistants.length === 0) return;
-            setSearchState((prev) => (prev ? { ...prev, open: !state.ask } : prev));
+        if (state?.ask === undefined || state?.ask === null) return;
-        } else if (state?.ask && aiMode === CustomizationAIMode.None) {
+
-            // Rewrite ask to query when the site doesn't support AI
+        // Wait for the first assistant to be ready (built-ins are always ready)
-            setSearchState((prev) => (prev ? { ...prev, query: prev.ask, ask: null } : prev));
+        const first = assistants[0];
-        }
+        if (first?.ready === false) return;
-    }, [state?.ask, setSearchState, aiMode]);
+
+        initialRef.current = true;
+
+        // For simplicity we're only triggering the first assistant
+        first.open(state?.ask ?? undefined);
+    }, [state?.ask, assistants.length, assistants, assistants[0]?.ready]);
 
     const onClose = React.useCallback(
         async (to?: string) => {
-            if (state) {
+            setSearchState((prev) =>
-                await setSearchState({
+                prev
-                    ...state,
+                    ? {
+                          ...prev,
                           open: false,
-                    query: state.query === '' ? null : state.query,
+                          query: prev.query === '' ? null : prev.query,
-                });
                       }
+                    : null
+            );
 
             if (to) {
                 router.push(to);
             }
         },
-        [state, setSearchState, router]
+        [setSearchState, router]
     );
 
     useHotkeys(
@@ -79,20 +91,20 @@ export function SearchContainer(props: SearchContainerProps) {
     );
 
     const onOpen = React.useCallback(() => {
-        if (open) {
+        if (state?.open) {
             return;
         }
         setSearchState((prev) => ({
-            ask: aiMode === CustomizationAIMode.Assistant && prev ? prev.ask : null,
+            ask: withAI ? (prev?.ask ?? null) : null,
             global: prev?.global ?? false,
-            query: (!withAIChat ? prev?.ask : null) ?? prev?.query ?? '',
+            query: prev?.query ?? (withSearchAI || !withAI ? prev?.ask : null) ?? '',
             open: true,
         }));
 
         trackEvent({
             type: 'search_open',
         });
-    }, [open, setSearchState, trackEvent, withAIChat]);
+    }, [state?.open, setSearchState, trackEvent, withAI, withSearchAI]);
 
     React.useEffect(() => {
         const handleKeyDown = (event: KeyboardEvent) => {
@@ -122,7 +134,7 @@ export function SearchContainer(props: SearchContainerProps) {
 
     const onChange = (value: string) => {
         setSearchState((prev) => ({
-            ask: aiMode === CustomizationAIMode.Assistant && prev ? prev.ask : null, // When typing, we go back to the default search mode
+            ask: withAI && !withSearchAI ? (prev?.ask ?? null) : null, // When typing, we reset ask to get back to normal search (unless non-search assistants are defined)
             query: value,
             global: prev?.global ?? false,
             open: true,
@@ -133,14 +145,14 @@ export function SearchContainer(props: SearchContainerProps) {
     const normalizedQuery = state?.query?.trim() ?? '';
     const normalizedAsk = state?.ask?.trim() ?? '';
 
-    const showAsk = aiMode === CustomizationAIMode.Search && normalizedAsk;
+    const showAsk = withSearchAI && normalizedAsk; // withSearchAI && normalizedAsk;
 
     return (
         <SearchAskProvider value={searchAsk}>
             <Popover
                 content={
                     // Only show content if there's a query or Ask is enabled
-                    (state?.query || aiMode !== CustomizationAIMode.None) && open ? (
+                    state?.query || withSearchAI ? (
                         <React.Suspense fallback={null}>
                             {isMultiVariants && !showAsk ? (
                                 <SearchScopeToggle spaceTitle={spaceTitle} />
@@ -150,8 +162,7 @@ export function SearchContainer(props: SearchContainerProps) {
                                     ref={resultsRef}
                                     query={normalizedQuery}
                                     global={state?.global ?? false}
-                                    aiMode={aiMode}
+                                    siteSpaceId={siteSpaceId}
-                                    spaceId={spaceId}
                                 />
                             ) : null}
                             {showAsk ? <SearchAskAnswer query={normalizedAsk} /> : null}
@@ -159,7 +170,10 @@ export function SearchContainer(props: SearchContainerProps) {
                     ) : null
                 }
                 rootProps={{
-                    open: open,
+                    open: state?.open ?? false,
+                    onOpenChange: (open) => {
+                        setSearchState((prev) => (prev ? { ...prev, open } : null));
+                    },
                     modal: isMobile,
                 }}
                 contentProps={{
@@ -172,7 +186,6 @@ export function SearchContainer(props: SearchContainerProps) {
                         if (searchInputRef.current?.contains(event.target as Node)) {
                             return;
                         }
-                        onClose();
                     },
                     sideOffset: 8,
                     collisionPadding: {
@@ -189,15 +202,27 @@ export function SearchContainer(props: SearchContainerProps) {
             >
                 <SearchInput
                     ref={searchInputRef}
-                    value={(!withAIChat ? state?.ask : null) ?? state?.query ?? ''}
+                    value={state?.query ?? (withSearchAI || !withAI ? state?.ask : null) ?? ''}
                     onFocus={onOpen}
                     onChange={onChange}
                     onKeyDown={onKeyDown}
-                    aiMode={aiMode}
+                    withAI={withSearchAI}
-                    isOpen={open}
+                    isOpen={state?.open ?? false}
                     className={className}
                 />
             </Popover>
+            {assistants
+                .filter((assistant) => assistant.ui === true)
+                .map((assistant) => (
+                    <AIChatButton
+                        key={assistant.id}
+                        assistant={assistant}
+                        showLabel={
+                            assistants.filter((assistant) => assistant.ui === true).length === 1 &&
+                            style === CustomizationSearchStyle.Prominent
+                        }
+                    />
+                ))}
         </SearchAskProvider>
     );
 }

packages/gitbook/src/components/Search/SearchInput.tsx

@@ -4,7 +4,6 @@ import { useEffect, useRef, useState } from 'react';
 
 import { tString, useLanguage } from '@/intl/client';
 import { tcls } from '@/lib/tailwind';
-import { CustomizationAIMode } from '@gitbook/api';
 import { Icon } from '@gitbook/icons';
 import { Button, variantClasses } from '../primitives';
 import { useClassnames } from '../primitives/StyleProvider';
@@ -14,7 +13,7 @@ interface SearchInputProps {
     onKeyDown: (event: React.KeyboardEvent<HTMLInputElement>) => void;
     onFocus: () => void;
     value: string;
-    aiMode: CustomizationAIMode;
+    withAI: boolean;
     isOpen: boolean;
     className?: string;
 }
@@ -27,7 +26,7 @@ const sizeClasses = ['text-sm', 'px-3.5', 'py-1.5', 'md:circular-corners:px-4'];
  */
 export const SearchInput = React.forwardRef<HTMLDivElement, SearchInputProps>(
     function SearchInput(props, ref) {
-        const { onChange, onKeyDown, onFocus, value, aiMode, isOpen, className } = props;
+        const { onChange, onKeyDown, onFocus, value, withAI, isOpen, className } = props;
         const inputRef = useRef<HTMLInputElement>(null);
 
         const language = useLanguage();
@@ -94,7 +93,7 @@ export const SearchInput = React.forwardRef<HTMLDivElement, SearchInputProps>(
                         onChange={(event) => onChange(event.target.value)}
                         value={value}
                         // We only show "search or ask" if the search input actually handles both search and ask.
-                        placeholder={`${tString(language, aiMode === CustomizationAIMode.Search ? 'search_or_ask' : 'search')}…`}
+                        placeholder={`${tString(language, withAI ? 'search_or_ask' : 'search')}…`}
                         maxLength={512}
                         size={10}
                         data-testid="search-input"

packages/gitbook/src/components/Search/SearchQuestionResultItem.tsx

@@ -1,8 +1,7 @@
 import React from 'react';
 
+import type { Assistant } from '@/components/AI';
 import { t, tString, useLanguage } from '@/intl/client';
-import { Icon } from '@gitbook/icons';
-import { AIChatIcon } from '../AIChat/';
 import { SearchResultItem } from './SearchResultItem';
 import { useSearchLink } from './useSearch';
 
@@ -11,11 +10,11 @@ export const SearchQuestionResultItem = React.forwardRef(function SearchQuestion
         question: string;
         active: boolean;
         recommended?: boolean;
-        withAIChat: boolean;
+        assistant: Assistant;
     },
     ref: React.Ref<HTMLAnchorElement>
 ) {
-    const { question, recommended = false, active, withAIChat } = props;
+    const { question, recommended = false, active, assistant } = props;
     const language = useLanguage();
     const getLinkProp = useSearchLink();
 
@@ -26,21 +25,18 @@ export const SearchQuestionResultItem = React.forwardRef(function SearchQuestion
             ref={ref}
             data-testid={recommended ? 'search-recommended-question' : 'search-ask-question'}
             scroll={false}
-            {...getLinkProp({
+            {...getLinkProp(
+                {
                     ask: question,
-                open: false,
                     query: null,
-            })}
+                    open: assistant.mode === 'search',
-            active={active}
+                },
-            leadingIcon={
+                () => {
-                recommended ? (
+                    assistant.open(question);
-                    <Icon icon="search" className="size-4" />
-                ) : withAIChat ? (
-                    <AIChatIcon className="size-4" />
-                ) : (
-                    <Icon icon="sparkles" className="size-4" />
-                )
                 }
+            )}
+            active={active}
+            leadingIcon={recommended ? 'search' : assistant.icon}
             className={recommended ? 'pr-1.5' : ''}
         >
             {recommended ? (
@@ -51,7 +47,7 @@ export const SearchQuestionResultItem = React.forwardRef(function SearchQuestion
                         {t(language, 'search_ask', [question])}
                     </div>
                     <div className="text-sm text-tint-subtle">
-                        {t(language, 'search_ask_description')}
+                        {t(language, 'search_ask_description', assistant.label)}
                     </div>
                 </>
             )}

packages/gitbook/src/components/Search/SearchResultItem.tsx

@@ -1,5 +1,5 @@
 import { tcls } from '@/lib/tailwind';
-import { Icon } from '@gitbook/icons';
+import { Icon, type IconName } from '@gitbook/icons';
 import * as React from 'react';
 import { Button } from '../primitives';
 import { Link, type LinkInsightsProps } from '../primitives/Link';
@@ -53,7 +53,13 @@ export const SearchResultItem = React.forwardRef(function SearchResultItem(
             )}
             {...rest}
         >
-            <div className="size-4 shrink-0 text-tint-subtle">{leadingIcon}</div>
+            <div className="size-4 shrink-0 text-tint-subtle">
+                {typeof leadingIcon === 'string' ? (
+                    <Icon icon={leadingIcon as IconName} className="size-4" />
+                ) : (
+                    leadingIcon
+                )}
+            </div>
             <div className="grow">{children}</div>
             {active ? (
                 <Button label={action} iconOnly variant="primary" icon="arrow-turn-down-left" />

packages/gitbook/src/components/Search/SearchResults.tsx

@@ -4,11 +4,11 @@ import { readStreamableValue } from 'ai/rsc';
 import assertNever from 'assert-never';
 import React from 'react';
 
+import type { Assistant } from '@/components/AI';
 import { t, useLanguage } from '@/intl/client';
 import { tcls } from '@/lib/tailwind';
-
-import { CustomizationAIMode } from '@gitbook/api';
 import { assert } from 'ts-essentials';
+import { useAI } from '../AI';
 import { useTrackEvent } from '../Insights';
 import { Loading } from '../primitives';
 import { SearchPageResultItem } from './SearchPageResultItem';
@@ -29,7 +29,7 @@ export interface SearchResultsRef {
 
 type ResultType =
     | OrderedComputedResult
-    | { type: 'question'; id: string; query: string }
+    | { type: 'question'; id: string; query: string; assistant: Assistant }
     | { type: 'recommended-question'; id: string; question: string };
 
 /**
@@ -51,12 +51,11 @@ export const SearchResults = React.forwardRef(function SearchResults(
         children?: React.ReactNode;
         query: string;
         global: boolean;
-        aiMode: CustomizationAIMode;
+        siteSpaceId: string;
-        spaceId: string;
     },
     ref: React.Ref<SearchResultsRef>
 ) {
-    const { children, query, aiMode, global, spaceId } = props;
+    const { children, query, global, siteSpaceId } = props;
 
     const language = useLanguage();
     const trackEvent = useTrackEvent();
@@ -67,8 +66,8 @@ export const SearchResults = React.forwardRef(function SearchResults(
     const [cursor, setCursor] = React.useState<number | null>(null);
     const refs = React.useRef<(null | HTMLAnchorElement)[]>([]);
 
-    const withAI =
+    const { assistants } = useAI();
-        aiMode === CustomizationAIMode.Search || aiMode === CustomizationAIMode.Assistant;
+    const withAI = assistants.length > 0;
 
     React.useEffect(() => {
         if (!query) {
@@ -77,9 +76,12 @@ export const SearchResults = React.forwardRef(function SearchResults(
                 return;
             }
 
-            if (cachedRecommendedQuestions.has(spaceId)) {
+            if (cachedRecommendedQuestions.has(siteSpaceId)) {
-                const results = cachedRecommendedQuestions.get(spaceId);
+                const results = cachedRecommendedQuestions.get(siteSpaceId);
-                assert(results, `Cached recommended questions should be set for space ${spaceId}`);
+                assert(
+                    results,
+                    `Cached recommended questions should be set for site-space ${siteSpaceId}`
+                );
                 setResultsState({ results, fetching: false });
                 return;
             }
@@ -98,7 +100,7 @@ export const SearchResults = React.forwardRef(function SearchResults(
                     return;
                 }
 
-                const response = await streamRecommendedQuestions(spaceId);
+                const response = await streamRecommendedQuestions({ siteSpaceId });
                 for await (const entry of readStreamableValue(response.stream)) {
                     if (!entry) {
                         continue;
@@ -115,7 +117,7 @@ export const SearchResults = React.forwardRef(function SearchResults(
                         id: question,
                         question,
                     });
-                    cachedRecommendedQuestions.set(spaceId, recommendedQuestions);
+                    cachedRecommendedQuestions.set(siteSpaceId, recommendedQuestions);
 
                     if (!cancelled) {
                         setResultsState({ results: [...recommendedQuestions], fetching: false });
@@ -156,13 +158,13 @@ export const SearchResults = React.forwardRef(function SearchResults(
             cancelled = true;
             clearTimeout(timeout);
         };
-    }, [query, global, withAI, trackEvent]);
+    }, [query, global, trackEvent, withAI, siteSpaceId]);
 
     const results: ResultType[] = React.useMemo(() => {
         if (!withAI) {
             return resultsState.results;
         }
-        return withQuestionResult(resultsState.results, query);
+        return withAskTriggers(resultsState.results, query, assistants);
     }, [resultsState.results, query, withAI]);
 
     React.useEffect(() => {
@@ -185,7 +187,7 @@ export const SearchResults = React.forwardRef(function SearchResults(
             block: 'nearest',
             inline: 'nearest',
         });
-    }, [cursor, refs]);
+    }, [cursor]);
 
     const moveBy = React.useCallback(
         (delta: number) => {
@@ -206,7 +208,7 @@ export const SearchResults = React.forwardRef(function SearchResults(
         }
 
         refs.current[cursor]?.click();
-    }, [cursor, refs]);
+    }, [cursor]);
 
     React.useImperativeHandle(
         ref,
@@ -278,10 +280,10 @@ export const SearchResults = React.forwardRef(function SearchResults(
                                             ref={(ref) => {
                                                 refs.current[index] = ref;
                                             }}
-                                            withAIChat={aiMode === CustomizationAIMode.Assistant}
                                             key={item.id}
                                             question={query}
                                             active={index === cursor}
+                                            assistant={item.assistant}
                                         />
                                     );
                                 }
@@ -292,9 +294,9 @@ export const SearchResults = React.forwardRef(function SearchResults(
                                                 refs.current[index] = ref;
                                             }}
                                             key={item.id}
-                                            withAIChat={aiMode === CustomizationAIMode.Assistant}
                                             question={item.question}
                                             active={index === cursor}
+                                            assistant={assistants[0]}
                                             recommended
                                         />
                                     );
@@ -327,12 +329,24 @@ export const SearchResults = React.forwardRef(function SearchResults(
 /**
  * Add a "Ask <question>" item at the top of the results list.
  */
-function withQuestionResult(results: ResultType[], query: string): ResultType[] {
+function withAskTriggers(
+    results: ResultType[],
+    query: string,
+    assistants: Assistant[]
+): ResultType[] {
     const without = results.filter((result) => result.type !== 'question');
 
     if (query.length === 0) {
         return without;
     }
 
-    return [{ type: 'question', id: 'question', query }, ...(without ?? [])];
+    return [
+        ...assistants.map((assistant, index) => ({
+            type: 'question' as const,
+            id: `question-${index}`,
+            query,
+            assistant,
+        })),
+        ...(without ?? []),
+    ];
 }

packages/gitbook/src/components/Search/server-actions.tsx

@@ -22,6 +22,7 @@ import type * as React from 'react';
 import { throwIfDataError } from '@/lib/data';
 import { getSiteURLDataFromMiddleware } from '@/lib/middleware';
 import { joinPathWithBaseURL } from '@/lib/paths';
+import { traceErrorOnly } from '@/lib/tracing';
 import type { IconName } from '@gitbook/icons';
 import { DocumentView } from '../DocumentView';
 
@@ -68,18 +69,21 @@ export interface AskAnswerResult {
  * Server action to search content in the entire site.
  */
 export async function searchAllSiteContent(query: string): Promise<OrderedComputedResult[]> {
+    return traceErrorOnly('Search.searchAllSiteContent', async () => {
         const context = await getServerActionBaseContext();
 
         return await searchSiteContent(context, {
             query,
             scope: { mode: 'all' },
         });
+    });
 }
 
 /**
  * Server action to search content in a space.
  */
 export async function searchSiteSpaceContent(query: string): Promise<OrderedComputedResult[]> {
+    return traceErrorOnly('Search.searchSiteSpaceContent', async () => {
         const context = await getServerActionBaseContext();
         const siteURLData = await getSiteURLDataFromMiddleware();
 
@@ -91,6 +95,7 @@ export async function searchSiteSpaceContent(query: string): Promise<OrderedComp
                 ? { mode: 'current', siteSpaceId: siteURLData.siteSpace }
                 : { mode: 'specific', siteSpaceIds: [siteURLData.siteSpace] },
         });
+    });
 }
 
 /**
@@ -101,6 +106,7 @@ export async function streamAskQuestion({
 }: {
     question: string;
 }) {
+    return traceErrorOnly('Search.streamAskQuestion', async () => {
         const responseStream = createStreamableValue<AskAnswerResult | undefined>();
 
         (async () => {
@@ -181,17 +187,21 @@ export async function streamAskQuestion({
         return {
             stream: responseStream.value,
         };
+    });
 }
 
 /**
  * Stream a list of suggested questions for the site.
  * Optionally scoped to a specific space.
  */
-export async function streamRecommendedQuestions(spaceId?: string) {
+export async function streamRecommendedQuestions(args: { siteSpaceId?: string }) {
+    return traceErrorOnly('Search.streamRecommendedQuestions', async () => {
         const siteURLData = await getSiteURLDataFromMiddleware();
         const context = await getServerActionBaseContext();
 
-    const responseStream = createStreamableValue<SearchAIRecommendedQuestionStream | undefined>();
+        const responseStream = createStreamableValue<
+            SearchAIRecommendedQuestionStream | undefined
+        >();
 
         (async () => {
             const apiClient = await context.dataFetcher.api();
@@ -199,7 +209,7 @@ export async function streamRecommendedQuestions(spaceId?: string) {
                 siteURLData.organization,
                 siteURLData.site,
                 {
-                spaceId,
+                    siteSpaceId: args.siteSpaceId,
                 }
             );
 
@@ -215,6 +225,7 @@ export async function streamRecommendedQuestions(spaceId?: string) {
             });
 
         return { stream: responseStream.value };
+    });
 }
 
 /**

packages/gitbook/src/components/Search/useSearch.tsx

@@ -1,6 +1,7 @@
+'use client';
+
 import { parseAsBoolean, parseAsString, useQueryStates } from 'nuqs';
 import React from 'react';
-
 import type { LinkProps } from '../primitives';
 
 export interface SearchState {
@@ -25,9 +26,17 @@ export type UpdateSearchState = (
 ) => Promise<URLSearchParams>;
 
 /**
- * Hook to access the current search query and update it.
+ * Context to share the search state updater so all consumers use the same instance.
  */
-export function useSearch(withAIChat = false): [SearchState | null, UpdateSearchState] {
+export const SearchContext = React.createContext<{
+    state: SearchState | null;
+    setState: UpdateSearchState;
+} | null>(null);
+
+export function SearchContextProvider(props: React.PropsWithChildren): React.ReactElement {
+    const { children } = props;
+
+    // URL-backed state
     const [rawState, setRawState] = useQueryStates(keyMap, {
         history: 'replace',
     });
@@ -44,22 +53,20 @@ export function useSearch(withAIChat = false): [SearchState | null, UpdateSearch
         }
     }, [rawState, setRawState]);
 
-    // Separate local state for open (not synchronized with URL)
+    // Local UI state for the popover open/close (not in URL)
-    // Default to true if there's already a query in the URL
     const [open, setIsOpen] = React.useState(() => {
-        return rawState?.q !== null || (!withAIChat && rawState?.ask !== null);
+        return rawState?.q !== null;
     });
 
     const state = React.useMemo<SearchState | null>(() => {
         if (rawState === null || (rawState.q === null && rawState.ask === null)) {
             return null;
         }
-
         return {
             query: rawState.q,
             ask: rawState.ask,
             global: !!rawState.global,
-            open: open,
+            open,
         };
     }, [rawState, open]);
 
@@ -78,16 +85,10 @@ export function useSearch(withAIChat = false): [SearchState | null, UpdateSearch
 
             if (update === null) {
                 setIsOpen(false);
-                return setRawState({
+                return setRawState({ q: null, ask: null, global: null });
-                    q: null,
-                    ask: null,
-                    global: null,
-                });
             }
 
-            // Update the local state
             setIsOpen(update.open);
-
             return setRawState({
                 q: update.query,
                 ask: update.ask,
@@ -97,37 +98,51 @@ export function useSearch(withAIChat = false): [SearchState | null, UpdateSearch
         [setRawState]
     );
 
-    return [state, setState];
+    return <SearchContext.Provider value={{ state, setState }}>{children}</SearchContext.Provider>;
+}
+
+/**
+ * Hook to access the current search query and update it.
+ */
+export function useSearch(): [SearchState | null, UpdateSearchState] {
+    const ctx = React.useContext(SearchContext);
+    if (!ctx) {
+        throw new Error('useSearch must be used within SearchContextProvider');
+    }
+    return [ctx.state, ctx.setState];
 }
 
 /**
  * Hook to create a link to a search query.
  */
-export function useSearchLink(): (query: Partial<SearchState>) => LinkProps {
+export function useSearchLink(): (
-    const [, setSearch] = useSearch();
+    params: Partial<SearchState>,
+    callback?: () => void
+) => LinkProps {
+    const [, setSearchState] = useSearch();
 
     return React.useCallback(
-        (query) => {
+        (params, callback) => {
             const searchParams = new URLSearchParams();
-            query.query ? searchParams.set('q', query.query) : searchParams.delete('q');
+            params.query ? searchParams.set('q', params.query) : searchParams.delete('q');
-            query.ask ? searchParams.set('ask', query.ask) : searchParams.delete('ask');
+            params.ask ? searchParams.set('ask', params.ask) : searchParams.delete('ask');
-            query.global ? searchParams.set('global', 'true') : searchParams.delete('global');
+            params.global ? searchParams.set('global', 'true') : searchParams.delete('global');
             return {
                 href: `?${searchParams.toString()}`,
                 prefetch: false,
                 onClick: (event) => {
                     event.preventDefault();
-                    setSearch((prev) => ({
+                    callback?.();
-                        query: null,
+                    setSearchState((prev) => ({
-                        ask: null,
+                        ...prev,
-                        global: false,
+                        query: params.query !== undefined ? params.query : null,
-                        open: query.open ?? prev?.open ?? false,
+                        ask: params.ask !== undefined ? params.ask : null,
-                        ...(prev ?? {}),
+                        global: params.global !== undefined ? params.global : false,
-                        ...query,
+                        open: params.open !== undefined ? params.open : false,
                     }));
                 },
             };
         },
-        [setSearch]
+        [setSearchState]
     );
 }

packages/gitbook/src/components/SitePage/SitePage.tsx

@@ -135,6 +135,9 @@ export async function generateSitePageMetadata(props: SitePageProps): Promise<Me
             canonical: linker
                 .toAbsoluteURL(linker.toPathForPage({ pages: revision.pages, page }))
                 .replace(/\/+$/, ''),
+            types: {
+                'text/markdown': `${linker.toAbsoluteURL(linker.toPathInSpace(page.path))}.md`,
+            },
         },
         openGraph: {
             images: [

packages/gitbook/src/components/SpaceLayout/SpaceLayout.tsx

@@ -1,5 +1,9 @@
 import type { GitBookSiteContext } from '@/lib/context';
-import { CustomizationAIMode, CustomizationHeaderPreset } from '@gitbook/api';
+import {
+    CustomizationAIMode,
+    CustomizationHeaderPreset,
+    CustomizationSearchStyle,
+} from '@gitbook/api';
 import React from 'react';
 
 import { Footer } from '@/components/Footer';
@@ -10,12 +14,12 @@ import { tcls } from '@/lib/tailwind';
 
 import type { VisitorAuthClaims } from '@/lib/adaptive';
 import { GITBOOK_API_PUBLIC_URL, GITBOOK_APP_URL } from '@/lib/env';
+import { AIContextProvider } from '../AI';
 import { AIChat } from '../AIChat';
-import { AIChatButton } from '../AIChat';
 import { Announcement } from '../Announcement';
 import { SpacesDropdown } from '../Header/SpacesDropdown';
 import { InsightsProvider } from '../Insights';
-import { SearchContainer } from '../Search';
+import { SearchContainer, SearchContextProvider } from '../Search';
 import { SiteSectionList, encodeClientSiteSections } from '../SiteSections';
 import { CurrentContentProvider } from '../hooks';
 import { SpaceLayoutContextProvider } from './SpaceLayoutContext';
@@ -51,19 +55,20 @@ export function SpaceLayout(props: {
 
     const aiMode = customization.ai?.mode;
 
-    const searchAndAI = (
+    const search = (
         <div className="flex grow items-center gap-2">
             <React.Suspense fallback={null}>
                 <SearchContainer
-                    aiMode={aiMode}
+                    style={
+                        customization.header.preset === CustomizationHeaderPreset.None
+                            ? CustomizationSearchStyle.Subtle
+                            : customization.styling.search
+                    }
                     isMultiVariants={siteSpaces.length > 1}
                     spaceTitle={siteSpace.title}
-                    spaceId={siteSpace.space.id}
+                    siteSpaceId={siteSpace.id}
                 />
             </React.Suspense>
-            {aiMode === CustomizationAIMode.Assistant ? (
-                <AIChatButton trademark={customization.trademark.enabled} />
-            ) : null}
         </div>
     );
 
@@ -84,9 +89,18 @@ export function SpaceLayout(props: {
                     appURL={GITBOOK_APP_URL}
                     apiHost={GITBOOK_API_PUBLIC_URL}
                     visitorCookieTrackingEnabled={customization.insights?.trackingCookie}
+                >
+                    <SearchContextProvider>
+                        <AIContextProvider
+                            aiMode={aiMode}
+                            trademark={customization.trademark.enabled}
                         >
                             <Announcement context={context} />
-                    <Header withTopHeader={withTopHeader} context={context} search={searchAndAI} />
+                            <Header
+                                withTopHeader={withTopHeader}
+                                context={context}
+                                search={search}
+                            />
                             {aiMode === CustomizationAIMode.Assistant ? (
                                 <AIChat trademark={customization.trademark.enabled} />
                             ) : null}
@@ -127,7 +141,7 @@ export function SpaceLayout(props: {
                                             innerHeader={
                                                 // displays the search button and/or the space dropdown in the ToC according to the header/variant settings. E.g if there is no header, the search button will be displayed in the ToC.
                                                 <>
-                                            {!withTopHeader && searchAndAI}
+                                                    {!withTopHeader && search}
                                                     {!withTopHeader && withSections && sections && (
                                                         <SiteSectionList
                                                             className={tcls('hidden', 'lg:block')}
@@ -152,12 +166,16 @@ export function SpaceLayout(props: {
                                                 </>
                                             }
                                         />
-                                <div className="flex min-w-0 flex-1 flex-col">{children}</div>
+                                        <div className="flex min-w-0 flex-1 flex-col">
+                                            {children}
+                                        </div>
                                     </div>
                                 </div>
                             </div>
 
                             {withFooter ? <Footer context={context} /> : null}
+                        </AIContextProvider>
+                    </SearchContextProvider>
                 </InsightsProvider>
             </CurrentContentProvider>
         </SpaceLayoutContextProvider>

packages/gitbook/src/components/TableOfContents/PageGroupItem.tsx

@@ -14,7 +14,7 @@ export function PageGroupItem(props: { page: ClientTOCPageGroup }) {
         <li className="group/page-group-item flex flex-col">
             <div
                 className={tcls(
-                    '-top-5 group-first/page-group-item:-mt-5 sticky z-1 flex items-center gap-3 px-3 pt-6',
+                    '-top-6 group-first/page-group-item:-mt-6 sticky z-1 flex items-center gap-3 px-3 pt-6',
                     'font-semibold text-xs uppercase tracking-wide',
                     'pb-3', // Add extra padding to make the header fade a bit nicer
                     '-mb-1.5', // Then pull the page items a bit closer, effective bottom padding is 1.5 units / 6px.

packages/gitbook/src/components/TableOfContents/TableOfContentsScript.tsx

@@ -18,16 +18,17 @@ export function TableOfContentsScript() {
 
             // Set sticky top position based on header
             const headerHeight = header?.offsetHeight ?? 0;
-            root.style.setProperty('--toc-top-offset', `${headerHeight}px`);
 
             // Start with full viewport height minus header
             let height = window.innerHeight - headerHeight;
+            let offset = headerHeight;
 
             // Subtract visible banner (if any)
             if (banner && window.getComputedStyle(banner).display !== 'none') {
                 const bannerRect = banner.getBoundingClientRect();
                 if (bannerRect.height > 0 && bannerRect.bottom > 0) {
                     height -= Math.min(bannerRect.height, bannerRect.bottom);
+                    offset += Math.min(bannerRect.height, bannerRect.bottom);
                 }
             }
 
@@ -41,6 +42,7 @@ export function TableOfContentsScript() {
 
             // Update height
             root.style.setProperty('--toc-height', `${height}px`);
+            root.style.setProperty('--toc-top-offset', `${offset}px`);
         };
 
         // Initial update

packages/gitbook/src/components/ThemeToggler/ThemeToggler.tsx

@@ -1,11 +1,11 @@
 'use client';
 
-import { Icon, type IconName } from '@gitbook/icons';
+import type { IconName } from '@gitbook/icons';
 import { useTheme } from 'next-themes';
 import React from 'react';
 
 import { tString, useLanguage } from '@/intl/client';
-import { tcls } from '@/lib/tailwind';
+import { Button, ButtonGroup } from '../primitives';
 
 type ThemeMode = 'light' | 'system' | 'dark';
 
@@ -27,7 +27,7 @@ export function ThemeToggler() {
     };
 
     return (
-        <div role="radiogroup" className="flex flex-row gap-2">
+        <ButtonGroup role="radiogroup" className="gap-2" combinedShape={false}>
             <ThemeButton
                 active={mounted && theme === 'light'}
                 icon="sun-bright"
@@ -46,7 +46,7 @@ export function ThemeToggler() {
                 onClick={() => onSwitchMode('dark')}
                 title={tString(language, 'switch_to_dark_theme')}
             />
-        </div>
+        </ButtonGroup>
     );
 }
 
@@ -58,38 +58,21 @@ function ThemeButton(props: {
 }) {
     const { icon, onClick, title, active } = props;
     return (
-        <button
+        <Button
             type="button"
             role="radio"
             onClick={onClick}
-            aria-label={title}
+            label={title}
-            title={title}
             aria-checked={active}
-            className={tcls(
+            variant="blank"
-                'p-2',
+            size="default"
-                'rounded-sm',
+            className={
-                'straight-corners:rounded-none',
+                active
-                'circular-corners:rounded-full',
+                    ? 'bg-primary theme-muted:bg-primary-hover text-primary-strong ring-primary hover:bg-primary contrast-more:text-primary-strong contrast-more:ring-1 [html.sidebar-filled.theme-bold.tint_&]:bg-primary-hover'
-                'transition-all',
+                    : ''
-                'text-tint',
+            }
-                'contrast-more:text-tint-strong',
+            icon={icon}
-                'hover:bg-tint-hover',
+            iconOnly
-                'contrast-more:hover:ring-2',
+        />
-                'contrast-more:focus:ring-2',
-                'ring-tint',
-                active && [
-                    'bg-primary',
-                    'theme-muted:bg-primary-hover',
-                    '[html.sidebar-filled.theme-bold.tint_&]:bg-primary-hover',
-                    'hover:bg-primary',
-                    'text-primary-strong',
-                    'contrast-more:text-primary-strong',
-                    'contrast-more:ring-1',
-                    'ring-primary',
-                ]
-            )}
-        >
-            <Icon icon={icon} className={tcls('size-4')} />
-        </button>
     );
 }

packages/gitbook/src/components/hooks/useHash.ts

@@ -1,24 +0,0 @@
-'use client';
-
-import { useParams } from 'next/navigation';
-import React from 'react';
-
-function getHash(): string | null {
-    if (typeof window === 'undefined') {
-        return null;
-    }
-    return window.location.hash.slice(1);
-}
-
-/**
- * Hook to get the current hash from the URL.
- * @see https://github.com/vercel/next.js/discussions/49465
- */
-export function useHash() {
-    const params = useParams();
-    const [hash, setHash] = React.useState<string | null>(getHash);
-    React.useEffect(() => {
-        setHash(getHash());
-    }, [params]);
-    return hash;
-}

packages/gitbook/src/components/hooks/useHash.tsx

@@ -0,0 +1,52 @@
+'use client';
+import React from 'react';
+
+export const HashContext = React.createContext<{
+    hash: string | null;
+    /**
+     * Updates the hash value from the URL provided here.
+     * It will then be used by the `useHash` hook.
+     * URL can be relative or absolute.
+     */
+    updateHashFromUrl: (href: string) => void;
+}>({
+    hash: null,
+    updateHashFromUrl: () => {},
+});
+
+function getHash(): string | null {
+    if (typeof window === 'undefined') {
+        return null;
+    }
+    return window.location.hash.slice(1);
+}
+
+export const HashProvider: React.FC<React.PropsWithChildren<{}>> = ({ children }) => {
+    const [hash, setHash] = React.useState<string | null>(getHash);
+    const updateHashFromUrl = React.useCallback((href: string) => {
+        const url = new URL(
+            href,
+            typeof window !== 'undefined' ? window.location.origin : 'http://localhost'
+        );
+        setHash(url.hash.slice(1));
+    }, []);
+    const memoizedValue = React.useMemo(
+        () => ({ hash, updateHashFromUrl }),
+        [hash, updateHashFromUrl]
+    );
+    return <HashContext.Provider value={memoizedValue}>{children}</HashContext.Provider>;
+};
+
+/**
+ * Hook to get the current hash from the URL.
+ * @see https://github.com/vercel/next.js/discussions/49465
+ * We use a different hack than this one, because for same page link it don't work
+ * We can't use the `hashChange` event because it doesn't fire for `replaceState` and `pushState` which are used by Next.js.
+ * Since we have a single Link component that handles all links, we can use a context to share the hash.
+ */
+export function useHash() {
+    // const params = useParams();
+    const { hash } = React.useContext(HashContext);
+
+    return hash;
+}

packages/gitbook/src/components/primitives/Button.tsx

@@ -31,16 +31,16 @@ export const variantClasses = {
         'hover:text-contrast-primary-solid-hover',
         'border-0',
         'contrast-more:border',
-        'disabled:bg-tint',
+        'disabled:bg-primary-subtle',
-        'disabled:text-tint/8',
+        'disabled:text-primary/8',
     ],
     blank: [
         'bg-transparent',
         'text-tint',
         'border-0',
         'shadow-none!',
-        'hover:bg-primary-hover',
+        'hover:bg-tint-hover',
-        'hover:text-primary-strong',
+        'hover:text-tint-strong',
         'contrast-more:bg-tint-subtle',
         'hover:depth-subtle:translate-y-0',
         'disabled:text-tint/8',
@@ -52,7 +52,7 @@ export const variantClasses = {
         'text-tint',
         'hover:bg-tint-hover',
         'hover:depth-flat:bg-tint-hover',
-        'hover:text-primary',
+        'hover:text-tint',
         'contrast-more:bg-tint-subtle',
         'disabled:bg-transparent',
         'disabled:text-tint/8',
@@ -81,7 +81,7 @@ export const variantClasses = {
 const activeClasses = {
     primary: 'bg-primary-solid-hover',
     blank: 'bg-primary-active disabled:bg-primary-active text-primary-strong font-medium hover:text-primary-strong disabled:text-primary-strong hover:bg-primary-active',
-    secondary: 'bg-tint-active',
+    secondary: 'bg-tint-active disabled:bg-tint-active',
     header: 'bg-header-link/3',
 };
 
@@ -135,7 +135,7 @@ export const Button = React.forwardRef<
                         icon
                     )
                 ) : null}
-                {iconOnly ? null : label}
+                {iconOnly ? null : (children ?? label)}
             </>
         );
 
@@ -171,7 +171,7 @@ export const Button = React.forwardRef<
             </button>
         );
 
-        return iconOnly && label ? (
+        return (children || iconOnly) && label ? (
             <Tooltip
                 rootProps={{ open: disabled === true ? false : undefined }}
                 label={label}
@@ -185,14 +185,21 @@ export const Button = React.forwardRef<
     }
 );
 
-export const ButtonGroup = React.forwardRef<HTMLDivElement, ButtonProps>(({ children }, ref) => {
+export const ButtonGroup = React.forwardRef<
+    HTMLDivElement,
+    ButtonProps & { combinedShape?: boolean }
+>(({ children, className, combinedShape = true, ...rest }, ref) => {
     return (
         <div
             ref={ref}
             className={tcls(
-                'flex h-fit items-stretch justify-start *:translate-y-0! *:shadow-none!',
+                'flex h-fit items-stretch justify-start overflow-hidden',
-                '[&>*:not(:first-child)]:border-l-0 [&>*:not(:first-child,:last-child)]:rounded-none [&>*:not(:only-child):first-child]:rounded-r-none [&>*:not(:only-child):last-child]:rounded-l-none'
+                combinedShape
+                    ? '*:translate-y-0! *:shadow-none! [&>*:not(:first-child)]:border-l-0 [&>*:not(:first-child,:last-child)]:rounded-none! [&>*:not(:only-child):first-child]:rounded-r-none [&>*:not(:only-child):last-child]:rounded-l-none'
+                    : '',
+                className
             )}
+            {...rest}
         >
             {children}
         </div>

packages/gitbook/src/components/primitives/Link.tsx

@@ -6,6 +6,7 @@ import React from 'react';
 import { tcls } from '@/lib/tailwind';
 import { SiteExternalLinksTarget } from '@gitbook/api';
 import { type TrackEventInput, useTrackEvent } from '../Insights';
+import { HashContext } from '../hooks';
 import { isExternalLink } from '../utils/link';
 import { type DesignTokenName, useClassnames } from './StyleProvider';
 
@@ -71,6 +72,7 @@ export const Link = React.forwardRef(function Link(
 ) {
     const { href, prefetch, children, insights, classNames, className, ...domProps } = props;
     const { externalLinksTarget } = React.useContext(LinkSettingsContext);
+    const { updateHashFromUrl } = React.useContext(HashContext);
     const trackEvent = useTrackEvent();
     const forwardedClassNames = useClassnames(classNames || []);
     const isExternal = isExternalLink(href);
@@ -78,6 +80,9 @@ export const Link = React.forwardRef(function Link(
 
     const onClick = (event: React.MouseEvent<HTMLAnchorElement>) => {
         const isExternalWithOrigin = isExternalLink(href, window.location.origin);
+        if (!isExternal) {
+            updateHashFromUrl(href);
+        }
 
         if (insights) {
             trackEvent(insights, undefined, { immediate: isExternalWithOrigin });

packages/gitbook/src/components/primitives/styles.ts

@@ -13,11 +13,12 @@ export const ButtonStyles = [
     'border',
     'border-tint',
     'hover:border-tint-hover',
+    'disabled:border-tint',
 
     'depth-subtle:shadow-xs',
     'hover:depth-subtle:shadow-md',
     'focus-visible:depth-subtle:shadow-md',
-    'active:shadow-none',
+    'active:depth-subtle:shadow-xs',
     'shadow-tint/6',
     'dark:shadow-tint-1',
 
@@ -27,6 +28,7 @@ export const ButtonStyles = [
 
     'hover:depth-subtle:-translate-y-px',
     'focus-visible:depth-subtle:-translate-y-px',
+    'active:depth-subtle:translate-y-0',
     'transition-all',
 
     'grow-0',

packages/gitbook/src/intl/translations/de.ts

@@ -16,7 +16,7 @@ export const de = {
     search_scope_all: 'Alle Inhalte',
     ask: 'Fragen',
     search_ask: 'Fragen "${1}"',
-    search_ask_description: 'Finden Sie die Antwort mit AI',
+    search_ask_description: 'Finden Sie die Antwort mit ${1}',
     search_ask_sources: 'Quellen',
     search_ask_sources_no_answer: 'Verwandte Seiten',
     search_ask_no_answer:

packages/gitbook/src/intl/translations/en.ts

@@ -16,7 +16,7 @@ export const en = {
     search_scope_all: 'All content',
     ask: 'Ask',
     search_ask: 'Ask "${1}"',
-    search_ask_description: 'Find the answer with AI',
+    search_ask_description: 'Find the answer with ${1}',
     search_ask_sources: 'Sources',
     search_ask_sources_no_answer: 'Related pages',
     search_ask_no_answer:

packages/gitbook/src/intl/translations/es.ts

@@ -18,7 +18,7 @@ export const es: TranslationLanguage = {
     search_scope_all: 'Todo el contenido',
     ask: 'Preguntar',
     search_ask: 'Preguntar "${1}"',
-    search_ask_description: 'Encuentra la respuesta con IA',
+    search_ask_description: 'Encuentra la respuesta con ${1}',
     search_ask_sources: 'Fuentes',
     search_ask_sources_no_answer: 'Páginas relacionadas',
     search_ask_no_answer:

packages/gitbook/src/intl/translations/fr.ts

@@ -16,7 +16,7 @@ export const fr = {
     search_scope_all: 'Tous les contenus',
     ask: 'Poser une question',
     search_ask: 'Demander « ${1} »',
-    search_ask_description: 'Trouvez la réponse avec l’IA',
+    search_ask_description: 'Trouvez la réponse avec ${1}',
     search_ask_sources: 'Sources',
     search_ask_sources_no_answer: 'Pages associées',
     search_ask_no_answer: 'Pas de réponse trouvée. Essayez de reformuler votre question.',

packages/gitbook/src/intl/translations/index.ts

@@ -8,6 +8,7 @@ import { ja } from './ja';
 import { nl } from './nl';
 import { no } from './no';
 import { pt_br } from './pt-br';
+import { ru } from './ru';
 import type { TranslationLanguage } from './types';
 import { zh } from './zh';
 
@@ -27,4 +28,5 @@ export const languages: {
     nl,
     no,
     'pt-br': pt_br,
+    ru,
 };

packages/gitbook/src/intl/translations/ja.ts

@@ -18,7 +18,7 @@ export const ja: TranslationLanguage = {
     search_scope_all: '全てのコンテンツ',
     ask: '質問する',
     search_ask: '"${1}" を質問する',
-    search_ask_description: 'AIで答えを見つける',
+    search_ask_description: '${1}で答えを見つける',
     search_ask_sources: '情報源',
     search_ask_sources_no_answer: '関連ページ',
     search_ask_no_answer:

packages/gitbook/src/intl/translations/nl.ts

@@ -18,7 +18,7 @@ export const nl: TranslationLanguage = {
     search_scope_all: 'Alle inhoud',
     ask: 'Vragen',
     search_ask: 'Vraag "${1}"',
-    search_ask_description: 'Vind het antwoord met AI',
+    search_ask_description: 'Vind het antwoord met ${1}',
     search_ask_sources: 'Bronnen',
     search_ask_sources_no_answer: "Gerelateerde pagina's",
     search_ask_no_answer:

packages/gitbook/src/intl/translations/no.ts

@@ -18,7 +18,7 @@ export const no: TranslationLanguage = {
     search_scope_all: 'Alt innhold',
     ask: 'Spør',
     search_ask: 'Spør "${1}"',
-    search_ask_description: 'Finn svaret med AI',
+    search_ask_description: 'Finn svaret med ${1}',
     search_ask_sources: 'Kilder',
     search_ask_sources_no_answer: 'Relaterte sider',
     search_ask_no_answer:

packages/gitbook/src/intl/translations/pt-br.ts

@@ -16,7 +16,7 @@ export const pt_br = {
     search_scope_all: 'Todo o conteúdo',
     ask: 'Perguntar',
     search_ask: 'Perguntar "${1}"',
-    search_ask_description: 'Encontre a resposta com IA',
+    search_ask_description: 'Encontre a resposta com ${1}',
     search_ask_sources: 'Fontes',
     search_ask_sources_no_answer: 'Páginas relacionadas',
     search_ask_no_answer:

packages/gitbook/src/intl/translations/ru.ts

@@ -0,0 +1,109 @@
+export const ru = {
+    locale: 'ru',
+    powered_by_gitbook: 'Работает на GitBook',
+    sponsored_via_gitbook: 'Спонсируется GitBook',
+    switch_to_dark_theme: 'Переключиться на тёмную тему',
+    switch_to_light_theme: 'Переключиться на светлую тему',
+    switch_to_system_theme: 'Переключиться на системную тему',
+    search: 'Поиск',
+    search_or_ask: 'Найти или спросить',
+    search_input_placeholder: 'Поиск по содержимому',
+    search_ask_input_placeholder: 'Найти в содержимом или задать вопрос',
+    search_no_results_for: 'Нет результатов для "${1}".',
+    search_no_results: 'Нет результатов',
+    search_results_count: '${1} — число результатов',
+    search_scope_space: '${1}',
+    search_scope_all: 'Все материалы',
+    ask: 'Спросить',
+    search_ask: 'Спросить "${1}"',
+    search_ask_description: 'Найти ответ с помощью ${1}',
+    search_ask_sources: 'Источники',
+    search_ask_sources_no_answer: 'Похожие страницы',
+    search_ask_no_answer:
+        'Не удалось найти ответ на ваш вопрос. Попробуйте перефразировать его или задать более конкретный вопрос.',
+    search_ask_error: 'Что-то пошло не так. Пожалуйста, попробуйте позже.',
+    on_this_page: 'На этой странице',
+    next_page: 'Следующая',
+    previous_page: 'Предыдущая',
+    page_last_modified: 'Последнее обновление ${1}',
+    was_this_helpful: 'Это было полезно?',
+    was_this_helpful_positive: 'Да, было!',
+    was_this_helpful_neutral: 'Не знаю',
+    was_this_helpful_negative: 'Нет',
+    was_this_helpful_thank_you: 'Спасибо!',
+    was_this_helpful_comment: 'Хотите что-нибудь добавить?',
+    was_this_helpful_positive_label: 'Полезно',
+    was_this_helpful_negative_label: 'Не полезно',
+    submit: 'Отправить',
+    annotation_button_label: 'Открыть аннотацию',
+    code_copied: 'Скопировано!',
+    code_copy: 'Копировать',
+    table_of_contents_button_label: 'Открыть оглавление',
+    cookies_title: 'Файлы cookies',
+    cookies_prompt:
+        'Этот сайт использует файлы cookies для предоставления услуг и анализа трафика. Просматривая этот сайт, вы принимаете условия ${1}.',
+    cookies_prompt_privacy: 'политики конфиденциальности',
+    cookies_accept: 'Принять',
+    cookies_reject: 'Отклонить',
+    close: 'Закрыть',
+    view: 'Посмотреть',
+    edit_on_git: 'Редактировать в ${1}',
+    notfound_title: 'Страница не найдена',
+    notfound_link: 'Эта ссылка ведёт на страницу, которая была удалена или больше не существует.',
+    notfound: 'Страница, которую вы ищете, не существует.',
+    unexpected_error_title: 'Произошла ошибка',
+    unexpected_error: 'Извините, произошла непредвиденная ошибка. Пожалуйста, попробуйте позже.',
+    unexpected_error_retry: 'Попробуйте снова',
+    pdf_download: 'Экспортировать как PDF',
+    pdf_goback: 'Вернуться к материалу',
+    pdf_print: 'Напечатать или сохранить как PDF',
+    pdf_page_of: '${1} из ${2}',
+    pdf_mode_only_page: 'Только эта страница',
+    pdf_mode_all: 'Все страницы',
+    pdf_limit_reached:
+        'Не удалось создать PDF-файл для ${1} страниц, генерация остановлена ​​на ${2}.',
+    pdf_limit_reached_continue: 'Расширьте ещё на ${1} страниц.',
+    more: 'Ещё',
+    link_tooltip_external_link: 'Внешняя ссылка на',
+    link_tooltip_page_anchor: 'Перейти к разделу',
+    open_in_new_tab: 'Открыть в новой вкладке',
+    ai_chat_assistant_name: 'GitBook-помощник',
+    ai_chat_assistant_name_unbranded: 'ИИ-помощник',
+    ai_chat_assistant_description: 'Я здесь, чтобы помочь вам с базой знаний.',
+    ai_chat_assistant_greeting_morning: 'Доброе утро',
+    ai_chat_assistant_greeting_afternoon: 'Добрый день',
+    ai_chat_assistant_greeting_evening: 'Добрый вечер',
+    ai_chat_assistant_greeting_night: 'Доброй ночи',
+    ai_chat_clear_conversation: 'Очистить диалог',
+    ai_chat_thinking: 'Думает…',
+    ai_chat_working: 'Работает…',
+    ai_chat_context_badge: 'ИИ',
+    ai_chat_error: 'Что-то пошло не так.',
+    ai_chat_context_title: 'На основе вашего контекста',
+    ai_chat_context_description:
+        'Помощник использует ИИ и ваш контекст для генерации ответов и выполнения действий.',
+    ai_chat_context_pages_youve_read: 'Страницы, которые вы прочитали',
+    ai_chat_context_info_provided_by_the_site: 'Информация предоставлена ​​сайтом',
+    ai_chat_context_previous_messages: 'Предыдущие сообщения',
+    ai_chat_context_disclaimer: 'Ответы ИИ могут содержать ошибки.',
+    ai_chat_input_placeholder: 'Спросите, найдите или объясните...',
+    send: 'Отправить',
+    actions: 'Действия',
+    ai_chat_suggested_questions_title: 'Предложенные вопросы',
+    ai_chat_suggested_questions_about_this_page: 'О чём эта страница?',
+    ai_chat_suggested_questions_read_next: 'Что мне нужно прочитать дальше?',
+    ai_chat_suggested_questions_example: 'Можете ли вы привести пример?',
+    searched_for: 'Выполнен поиск ${1}',
+    ai_chat_tools_listed_pages: 'Просмотрены документы',
+    ai_chat_tools_read_page: 'Прочитана страница ${1}',
+    ai_chat_tools_mcp_tool: 'Вызван ${1}',
+    ai_chat_ask: 'Спросить ${1}',
+    ai_chat_ask_about_page: 'Спросить ${1} об этой странице',
+    copy_for_llms: 'Скопировать для LLM',
+    copy_page_markdown: 'Скопировать страницу как Markdown для LLM',
+    copy_page: 'Скопировать страницу',
+    view_page_markdown: 'Посмотреть как Markdown',
+    view_page_plaintext: 'Посмотреть как текст без форматирования',
+    open_in: 'Открыть в ${1}',
+    open_in_llms_pre_prompt: 'Прочитай ${1} и ответь на вопросы о содержимом.',
+};

packages/gitbook/src/intl/translations/zh.ts

@@ -18,7 +18,7 @@ export const zh: TranslationLanguage = {
     search_scope_all: '所有内容',
     ask: '询问',
     search_ask: '询问"${1}"',
-    search_ask_description: '利用人工智能找到答案',
+    search_ask_description: '利用${1}找到答案',
     search_ask_sources: '来源',
     search_ask_sources_no_answer: '相关页面',
     search_ask_no_answer: '无法找到您的问题的答案。您可以尝试改述问题或提供更具体的信息。',

packages/gitbook/src/lib/data/api.ts

@@ -92,6 +92,13 @@ export function createDataFetcher(
                 pageId: params.pageId,
             });
         },
+        getRevisionReusableContentDocument(params) {
+            return getRevisionReusableContentDocument(input, {
+                spaceId: params.spaceId,
+                revisionId: params.revisionId,
+                reusableContentId: params.reusableContentId,
+            });
+        },
         getLatestOpenAPISpecVersionContent(params) {
             return getLatestOpenAPISpecVersionContent(input, {
                 organizationId: params.organizationId,
@@ -354,6 +361,39 @@ const getRevisionPageDocument = cache(
     }
 );
 
+const getRevisionReusableContentDocument = cache(
+    async (
+        input: DataFetcherInput,
+        params: { spaceId: string; revisionId: string; reusableContentId: string }
+    ) => {
+        'use cache';
+        return wrapCacheDataFetcherError(async () => {
+            return trace(
+                `getRevisionReusableContentDocument(${params.spaceId}, ${params.revisionId}, ${params.reusableContentId})`,
+                async () => {
+                    const api = apiClient(input);
+                    const res = await api.spaces.getReusableContentDocumentInRevisionById(
+                        params.spaceId,
+                        params.revisionId,
+                        params.reusableContentId,
+                        {
+                            evaluated: true,
+                        },
+                        {
+                            ...noCacheFetchOptions,
+                        }
+                    );
+
+                    cacheTag(...getCacheTagsFromResponse(res));
+                    cacheLifeFromResponse(res, 'max');
+
+                    return res.data;
+                }
+            );
+        });
+    }
+);
+
 const getRevisionPageByPath = cache(
     async (
         input: DataFetcherInput,

packages/gitbook/src/lib/data/types.ts

@@ -100,6 +100,15 @@ export interface GitBookDataFetcher {
         pageId: string;
     }): Promise<DataFetcherResponse<api.JSONDocument>>;
 
+    /**
+     * Get the document of a reusable content by its space ID and reusable content ID.
+     */
+    getRevisionReusableContentDocument(params: {
+        spaceId: string;
+        revisionId: string;
+        reusableContentId: string;
+    }): Promise<DataFetcherResponse<api.JSONDocument>>;
+
     /**
      * Get a document by its space ID and document ID.
      */

packages/gitbook/src/lib/openapi/fetch.ts

@@ -36,25 +36,28 @@ export async function fetchOpenAPIFilesystem(
         return { filesystem: null, specUrl: null };
     }
 
-    const filesystem = await (() => {
+    const result = await (() => {
+        // If the reference is a new OpenAPI reference, we return it.
         if (ref.kind === 'openapi') {
             assert(resolved.openAPIFilesystem);
             return resolved.openAPIFilesystem;
         }
+        // For legacy blocks ("swagger"), we need to fetch the file system.
         return fetchFilesystem(resolved.href, context.space.id);
     })();
 
-    if ('error' in filesystem) {
+    if ('error' in result) {
-        throw new OpenAPIParseError(filesystem.error.message, { code: filesystem.error.code });
+        throw new OpenAPIParseError(result.error.message, { code: result.error.code });
     }
 
-    return {
+    return { filesystem: result, specUrl: resolved.href };
-        filesystem,
-        specUrl: resolved.href,
-    };
 }
 
-const fetchFilesystem = async (
+/**
+ * Fetch the filesystem from the URL.
+ * It's used for legacy "swagger" blocks.
+ */
+async function fetchFilesystem(
     url: string,
     spaceId: string
 ): Promise<
@@ -65,11 +68,11 @@ const fetchFilesystem = async (
               message: string;
           };
       }
-> => {
+> {
     'use cache';
     try {
         cacheTag(getCacheTag({ tag: 'space', space: spaceId }));
-        return await fetchFilesystemUncached(url);
+        return await fetchFilesystemNoCache(url);
     } catch (error) {
         // To avoid hammering the file with requests, we cache the error for around a minute.
         cacheLife('minutes');
@@ -86,21 +89,16 @@ const fetchFilesystem = async (
         console.error('Unknown error while fetching OpenAPI file:', error);
         return { error: { code: 'invalid' as const, message: 'Unknown error' } };
     }
-};
+}
 
-async function fetchFilesystemUncached(
+async function fetchFilesystemNoCache(url: string) {
-    url: string,
+    console.log(url);
-    options?: {
-        signal?: AbortSignal;
-    }
-) {
     // Wrap the raw string to prevent invalid URLs from being passed to fetch.
     // This can happen if the URL has whitespace, which is currently handled differently by Cloudflare's implementation of fetch:
     // https://github.com/cloudflare/workerd/issues/1957
     const response = await fetch(new URL(url), {
         ...noCacheFetchOptions,
         cache: 'no-store',
-        signal: options?.signal,
     });
 
     if (!response.ok) {

packages/gitbook/src/lib/openapi/resolveOpenAPIOperationBlock.ts

@@ -9,10 +9,7 @@ import type {
 
 type ResolveOpenAPIOperationBlockResult = ResolveOpenAPIBlockResult<OpenAPIOperationData>;
 
-const weakmap = new WeakMap<
+const cache = new WeakMap<AnyOpenAPIOperationsBlock, Promise<ResolveOpenAPIOperationBlockResult>>();
-    AnyOpenAPIOperationsBlock,
-    Promise<ResolveOpenAPIOperationBlockResult>
->();
 
 /**
  * Cache the result of resolving an OpenAPI block.
@@ -21,22 +18,24 @@ const weakmap = new WeakMap<
 export function resolveOpenAPIOperationBlock(
     args: ResolveOpenAPIBlockArgs<AnyOpenAPIOperationsBlock>
 ): Promise<ResolveOpenAPIOperationBlockResult> {
-    if (weakmap.has(args.block)) {
+    const inCache = cache.get(args.block);
-        return weakmap.get(args.block)!;
+    if (inCache) {
+        return inCache;
     }
 
-    const result = baseResolveOpenAPIOperationBlock(args);
+    const promise = resolveOpenAPIOperationBlockNoCache(args);
-    weakmap.set(args.block, result);
+    cache.set(args.block, promise);
-    return result;
+    return promise;
 }
 
 /**
  * Resolve OpenAPI operation block.
  */
-async function baseResolveOpenAPIOperationBlock(
+async function resolveOpenAPIOperationBlockNoCache(
     args: ResolveOpenAPIBlockArgs<AnyOpenAPIOperationsBlock>
 ): Promise<ResolveOpenAPIOperationBlockResult> {
     const { context, block } = args;
+
     if (!block.data.path || !block.data.method) {
         return { data: null, specUrl: null };
     }

packages/gitbook/src/lib/tracing.ts

@@ -49,6 +49,41 @@ export async function trace<T>(
     }
 }
 
+/**
+ * Record a performance trace for the given function, but only log errors.
+ * This is useful to not output too much noise in the logs, while still capturing important errors.
+ */
+export async function traceErrorOnly<T>(
+    name: string | TraceName,
+    fn: (span: TraceSpan) => Promise<T>
+): Promise<T> {
+    const { operation, name: executionName } =
+        typeof name === 'string' ? { operation: name, name: undefined } : name;
+    const completeName = executionName ? `${operation}(${executionName})` : operation;
+
+    const attributes: Record<string, boolean | string | number> = {};
+    const span: TraceSpan = {
+        setAttribute(label, value) {
+            attributes[label] = value;
+        },
+    };
+
+    const start = now();
+    let traceError: null | Error = null;
+    try {
+        return await fn(span);
+    } catch (error) {
+        span.setAttribute('error', true);
+        traceError = error as Error;
+        const logger = getLogger().subLogger(operation);
+        logger.error(
+            `trace ${completeName} failed with ${traceError.message} in ${now() - start}ms`,
+            attributes
+        );
+        throw error;
+    }
+}
+
 /**
  * Return the current time in milliseconds.
  */

packages/gitbook/src/middleware.ts

@@ -64,9 +64,22 @@ export async function middleware(request: NextRequest) {
 }
 
 async function validateServerActionRequest(request: NextRequest) {
+    // First thing we need to do is validate that the header is in a correct format.
+    if (request.headers.has('next-action')) {
+        // A server action id is a 1-byte hex string (2 chars) followed by a 20-byte SHA1 hash (40 chars) = 42 total characters.
+        // For ref https://github.com/vercel/next.js/blob/db561cb924cbea0f3384e89f251fc443a8aec1ae/crates/next-custom-transforms/src/transforms/server_actions.rs#L266-L268
+        const regex = /^[a-fA-F0-9]{42}$/;
+        const match = request.headers.get('next-action')?.match(regex);
+        if (!match) {
+            return new Response('Invalid request', {
+                status: 400,
+                headers: { 'content-type': 'text/plain' },
+            });
+        }
+
         // We need to reject incorrect server actions requests
         // We do not do it in cloudflare workers as there is a bug that prevents us from reading the request body.
-    if (request.headers.has('next-action') && process.env.GITBOOK_RUNTIME !== 'cloudflare') {
+        if (process.env.GITBOOK_RUNTIME !== 'cloudflare') {
             // We just test that the json body is parseable
             try {
                 const clonedRequest = request.clone();
@@ -80,6 +93,7 @@ async function validateServerActionRequest(request: NextRequest) {
                 });
             }
         }
+    }
 }
 
 /**