diff --git a/docs/features/editor.mdx b/docs/features/editor.mdx
index 8a3453b0..7e3992b3 100644
--- a/docs/features/editor.mdx
+++ b/docs/features/editor.mdx
@@ -67,7 +67,7 @@ When the container has a compose service name attached, an extra `⋮` button ap
 
 The right column shows the **Anatomy panel** by default: a read-only summary of the compose file with a tab for the stack's activity timeline.
 
-The header strip carries two tabs (**Anatomy** and **Activity**) plus shortcuts to open the **files** tab and enter **edit** mode. The shortcuts belong to the strip itself and remain available regardless of which tab is active.
+The header strip carries two tabs (**Anatomy** and **Activity**) plus shortcuts to **copy md** (export the summary as Markdown), open the **files** tab, and enter **edit** mode. The shortcuts belong to the strip itself and remain available regardless of which tab is active.
 
 The Anatomy tab lists:
 
@@ -81,6 +81,12 @@ The Anatomy tab lists:
 
 When an image update is available, an inline banner appears at the top of the panel. Its tone follows the version-bump severity: `safe to apply` (patch), `review recommended` (minor), `breaking changes possible` (major), or `review required` when the bump cannot be classified. The banner has an inline **apply** button that runs the same operation as the action bar's **Update**; it is hidden for roles that lack the `stack:edit` permission and when the bump is flagged as blocked.
 
+### Copy as Markdown
+
+The **copy md** shortcut copies the current anatomy to your clipboard as a Markdown document: the stack name, services, a ports table, a volumes table, the restart policy, the env file with its variable count, any missing variables, the network, and the source. Paste it straight into a README, a Git repository, Obsidian, BookStack, or a support thread to keep a written record of how a stack is wired.
+
+Empty sections render cleanly as `none`, and the export carries only variable **names** and **counts**, never the values stored in your `.env` file.
+
 The **Activity** tab streams every operational event scoped to this stack. See [Stack Activity](/features/stack-activity) for the full event catalog and attribution rules.
 
 ## Editor mode
diff --git a/frontend/src/components/StackAnatomyPanel.tsx b/frontend/src/components/StackAnatomyPanel.tsx
index 0f541d09..ff53c4da 100644
--- a/frontend/src/components/StackAnatomyPanel.tsx
+++ b/frontend/src/components/StackAnatomyPanel.tsx
@@ -1,10 +1,13 @@
 import { useEffect, useMemo, useRef, useState } from 'react';
 import { parse as parseYaml } from 'yaml';
-import { GitBranch, Pencil, ExternalLink, Rocket, FolderOpen } from 'lucide-react';
+import { GitBranch, Pencil, ExternalLink, Rocket, FolderOpen, Copy } from 'lucide-react';
 import { Button } from './ui/button';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from './ui/tabs';
 import { apiFetch } from '@/lib/api';
 import { cn } from '@/lib/utils';
+import { copyToClipboard } from '@/lib/clipboard';
+import { toast } from '@/components/ui/toast-store';
+import { buildStackAnatomyMarkdown, type PortRow, type VolumeRow } from '@/lib/anatomyMarkdown';
 import { StackActivityTimeline } from './stack/StackActivityTimeline';
 import type { NotificationItem } from '@/components/dashboard/types';
 
@@ -46,17 +49,6 @@ interface GitSourceInfo {
   compose_path?: string;
 }
 
-interface PortRow {
-  host: string;
-  container: string;
-  proto: string;
-}
-
-interface VolumeRow {
-  host: string;
-  container: string;
-}
-
 interface Anatomy {
   services: string[];
   ports: Record<string, PortRow[]>;
@@ -249,7 +241,7 @@ export default function StackAnatomyPanel({
 
   const envVarCount = envKeys.size;
 
-  const [gitSource, setGitSource] = useState<GitSourceInfo | null>(null);
+  const [gitSource, setGitSource] = useState<{ stack: string; info: GitSourceInfo } | null>(null);
   const [updatePreview, setUpdatePreview] = useState<UpdatePreview | null>(null);
   const [scanStatus, setScanStatus] = useState<{
     status: 'ok' | 'partial' | 'failed' | 'skipped' | null;
@@ -270,7 +262,10 @@ export default function StackAnatomyPanel({
           if (data && data.linked === false) {
             setGitSource(null);
           } else {
-            setGitSource({ repo_url: data.repo_url, branch: data.branch, compose_path: data.compose_path });
+            setGitSource({
+              stack: stackName,
+              info: { repo_url: data.repo_url, branch: data.branch, compose_path: data.compose_path },
+            });
           }
         } else {
           setGitSource(null);
@@ -358,6 +353,9 @@ export default function StackAnatomyPanel({
     ? anatomy.networks[0]
     : `${stackName}_default`;
   const firstEnvFile = anatomy?.envFiles[0] ?? selectedEnvFile ?? null;
+  // Only treat the fetched source as current when it belongs to the selected stack, so a
+  // slow /git-source response for a previously selected stack cannot render or be exported here.
+  const activeGitSource = gitSource?.stack === stackName ? gitSource.info : null;
   const primaryHostPort = useMemo(() => {
     if (!anatomy) return null;
     for (const svc of anatomy.services) {
@@ -367,6 +365,28 @@ export default function StackAnatomyPanel({
     return null;
   }, [anatomy]);
 
+  const handleCopyMarkdown = async () => {
+    if (!anatomy) return;
+    const markdown = buildStackAnatomyMarkdown({
+      stackName,
+      services: anatomy.services,
+      ports: anatomy.ports,
+      volumes: anatomy.volumes,
+      restart: anatomy.restart,
+      envFile: firstEnvFile,
+      envVarCount,
+      missingVars,
+      networkName,
+      gitSource: activeGitSource ? formatGitSource(activeGitSource) : null,
+    });
+    try {
+      await copyToClipboard(markdown);
+      toast.success('Stack anatomy copied as Markdown.');
+    } catch {
+      toast.error('Failed to copy to clipboard.');
+    }
+  };
+
   const bump = updatePreview?.summary.semver_bump ?? 'none';
   const hasUpdate = Boolean(updatePreview?.summary.has_update);
   const blocked = Boolean(updatePreview?.summary.blocked);
@@ -403,6 +423,17 @@ export default function StackAnatomyPanel({
           <TabsTrigger value="activity" className="h-6 px-2.5 font-mono text-[10px] uppercase tracking-[0.18em]">Activity</TabsTrigger>
         </TabsList>
         <div className="flex items-center gap-3">
+          {anatomy && (
+            <button
+              type="button"
+              data-testid="anatomy-copy-md-btn"
+              onClick={() => { void handleCopyMarkdown(); }}
+              className="inline-flex items-center gap-1 font-mono text-[10px] uppercase tracking-wide text-stat-subtitle hover:text-brand transition-colors"
+            >
+              <Copy className="h-3 w-3" strokeWidth={1.5} />
+              copy md
+            </button>
+          )}
           {onOpenFiles && (
             <button
               type="button"
@@ -521,8 +552,8 @@ export default function StackAnatomyPanel({
                 className="inline-flex items-center gap-1.5 font-mono text-[11px] text-left hover:text-brand transition-colors"
               >
                 <GitBranch className="h-3 w-3 shrink-0" strokeWidth={1.5} />
-                {gitSource ? (
-                  <span className="truncate">git <span className="text-stat-subtitle">·</span> {formatGitSource(gitSource)}</span>
+                {activeGitSource ? (
+                  <span className="truncate">git <span className="text-stat-subtitle">·</span> {formatGitSource(activeGitSource)}</span>
                 ) : (
                   <span>local</span>
                 )}
diff --git a/frontend/src/lib/anatomyMarkdown.test.ts b/frontend/src/lib/anatomyMarkdown.test.ts
new file mode 100644
index 00000000..4b60a58d
--- /dev/null
+++ b/frontend/src/lib/anatomyMarkdown.test.ts
@@ -0,0 +1,196 @@
+import { describe, it, expect } from 'vitest';
+import { buildStackAnatomyMarkdown, type AnatomyMarkdownInput } from './anatomyMarkdown';
+
+const fullInput: AnatomyMarkdownInput = {
+  stackName: 'mediawiki',
+  services: ['web', 'db'],
+  ports: {
+    web: [
+      { host: '8080', container: '80', proto: 'tcp' },
+      { host: '8443', container: '443', proto: 'tcp' },
+    ],
+  },
+  volumes: {
+    db: [{ host: './data', container: '/var/lib/mysql' }],
+  },
+  restart: 'unless-stopped',
+  envFile: '.env',
+  envVarCount: 12,
+  missingVars: ['DB_PASSWORD', 'SECRET_KEY'],
+  networkName: 'mediawiki_default',
+  gitSource: 'github.com/me/wiki#main',
+};
+
+const emptyInput: AnatomyMarkdownInput = {
+  stackName: 'blank',
+  services: [],
+  ports: {},
+  volumes: {},
+  restart: null,
+  envFile: null,
+  envVarCount: 0,
+  missingVars: [],
+  networkName: 'blank_default',
+  gitSource: null,
+};
+
+describe('buildStackAnatomyMarkdown', () => {
+  it('renders a full anatomy as tables, headings, and lists', () => {
+    expect(buildStackAnatomyMarkdown(fullInput)).toBe(
+      [
+        '# mediawiki',
+        '',
+        '## Services',
+        '- `web`',
+        '- `db`',
+        '',
+        '## Ports',
+        '| Service | Host | Container | Protocol |',
+        '| --- | --- | --- | --- |',
+        '| web | 8080 | 80 | tcp |',
+        '| web | 8443 | 443 | tcp |',
+        '',
+        '## Volumes',
+        '| Service | Host | Container |',
+        '| --- | --- | --- |',
+        '| db | ./data | /var/lib/mysql |',
+        '',
+        '## Restart policy',
+        '`unless-stopped`',
+        '',
+        '## Environment',
+        '- File: `.env`',
+        '- Variables: 12',
+        '- Missing: `DB_PASSWORD`, `SECRET_KEY`',
+        '',
+        '## Network',
+        '`mediawiki_default` (bridge)',
+        '',
+        '## Source',
+        'git · github.com/me/wiki#main',
+      ].join('\n'),
+    );
+  });
+
+  it('renders clean empty-state placeholders', () => {
+    expect(buildStackAnatomyMarkdown(emptyInput)).toBe(
+      [
+        '# blank',
+        '',
+        '## Services',
+        '_none defined_',
+        '',
+        '## Ports',
+        '_none_',
+        '',
+        '## Volumes',
+        '_none_',
+        '',
+        '## Restart policy',
+        '_default_',
+        '',
+        '## Environment',
+        '- File: _none_',
+        '',
+        '## Network',
+        '`blank_default` (bridge)',
+        '',
+        '## Source',
+        'local',
+      ].join('\n'),
+    );
+  });
+
+  it('keeps missing env vars visible', () => {
+    const md = buildStackAnatomyMarkdown(fullInput);
+    expect(md).toContain('- Missing: `DB_PASSWORD`, `SECRET_KEY`');
+  });
+
+  it('emits only the env variable count and key names, never values', () => {
+    const md = buildStackAnatomyMarkdown(fullInput);
+    expect(md).toContain('- Variables: 12');
+    expect(md).toContain('`DB_PASSWORD`');
+    // The builder has no access to env values, so no `KEY=value` assignment can appear.
+    expect(md).not.toMatch(/DB_PASSWORD\s*=/);
+  });
+
+  it('escapes pipe characters in volume table cells', () => {
+    const md = buildStackAnatomyMarkdown({
+      ...emptyInput,
+      services: ['svc'],
+      volumes: { svc: [{ host: '/data|weird', container: '/mnt' }] },
+    });
+    expect(md).toContain('| svc | /data\\|weird | /mnt |');
+  });
+
+  it('escapes pipe characters in port table cells', () => {
+    const md = buildStackAnatomyMarkdown({
+      ...emptyInput,
+      services: ['svc'],
+      ports: { svc: [{ host: '127.0.0.1|x', container: '80', proto: 'tcp' }] },
+    });
+    expect(md).toContain('| svc | 127.0.0.1\\|x | 80 | tcp |');
+  });
+
+  it('escapes backslashes before pipes so the escaping cannot be defeated', () => {
+    const md = buildStackAnatomyMarkdown({
+      ...emptyInput,
+      services: ['svc'],
+      // host `C:\data` -> `C:\\data`; container `a\|b` -> backslash doubled then pipe escaped -> `a\\\|b`
+      volumes: { svc: [{ host: 'C:\\data', container: 'a\\|b' }] },
+    });
+    expect(md).toContain('| svc | C:\\\\data | a\\\\\\|b |');
+  });
+
+  it('collapses newlines in a table cell to a single space', () => {
+    const md = buildStackAnatomyMarkdown({
+      ...emptyInput,
+      services: ['svc'],
+      volumes: { svc: [{ host: 'a\nb', container: '/mnt' }] },
+    });
+    expect(md).toContain('| svc | a b | /mnt |');
+  });
+
+  it('collapses CRLF and lone carriage returns in a table cell', () => {
+    const md = buildStackAnatomyMarkdown({
+      ...emptyInput,
+      services: ['svc'],
+      volumes: { svc: [{ host: 'a\r\nb', container: 'c\rd' }] },
+    });
+    expect(md).toContain('| svc | a b | c d |');
+  });
+
+  it('flattens rows from multiple services into one table', () => {
+    const md = buildStackAnatomyMarkdown({
+      ...emptyInput,
+      services: ['web', 'db'],
+      ports: {
+        web: [{ host: '8080', container: '80', proto: 'tcp' }],
+        db: [{ host: '5432', container: '5432', proto: 'tcp' }],
+      },
+    });
+    expect(md).toContain('| web | 8080 | 80 | tcp |');
+    expect(md).toContain('| db | 5432 | 5432 | tcp |');
+  });
+
+  it('omits the Missing line when an env file has no missing vars', () => {
+    const md = buildStackAnatomyMarkdown({
+      ...emptyInput,
+      envFile: '.env',
+      envVarCount: 3,
+      missingVars: [],
+    });
+    expect(md).toContain('## Environment\n- File: `.env`\n- Variables: 3');
+    expect(md).not.toContain('- Missing:');
+  });
+
+  it('is deterministic across distinct but equal inputs', () => {
+    const a = buildStackAnatomyMarkdown(fullInput);
+    const b = buildStackAnatomyMarkdown({
+      ...fullInput,
+      ports: { ...fullInput.ports },
+      volumes: { ...fullInput.volumes },
+    });
+    expect(a).toBe(b);
+  });
+});
diff --git a/frontend/src/lib/anatomyMarkdown.ts b/frontend/src/lib/anatomyMarkdown.ts
new file mode 100644
index 00000000..b1465d9a
--- /dev/null
+++ b/frontend/src/lib/anatomyMarkdown.ts
@@ -0,0 +1,96 @@
+/**
+ * Deterministic Markdown export for the Stack Anatomy panel.
+ *
+ * Turns the already-parsed compose anatomy into a clean Markdown document so an
+ * operator can paste a stack summary into Git, Obsidian, BookStack, a README, or
+ * a support thread. The builder is pure and side-effect free: the same input
+ * always yields byte-identical output.
+ *
+ * It only ever receives env variable names and a count, never `.env` values, so
+ * no secret can leak into the exported text.
+ */
+
+export interface PortRow {
+  host: string;
+  container: string;
+  proto: string;
+}
+
+export interface VolumeRow {
+  host: string;
+  container: string;
+}
+
+export interface AnatomyMarkdownInput {
+  stackName: string;
+  services: string[];
+  ports: Record<string, PortRow[]>;
+  volumes: Record<string, VolumeRow[]>;
+  restart: string | null;
+  /** Selected env file path, or null when the stack declares none. */
+  envFile: string | null;
+  envVarCount: number;
+  /** Referenced `${VAR}` names with no entry in the env file. */
+  missingVars: string[];
+  networkName: string;
+  /** Formatted Git label (typically `host/repo#branch`) when Git-linked, else null (local). */
+  gitSource: string | null;
+}
+
+const code = (s: string): string => `\`${s}\``;
+
+// Escape the backslash first (so it cannot defeat the pipe escaping), then pipes
+// that would break a table row, then collapse line breaks (CRLF, LF, or a lone CR)
+// onto the same line.
+function escapeCell(value: string): string {
+  return value
+    .replace(/\\/g, '\\\\')
+    .replace(/\|/g, '\\|')
+    .replace(/\r\n?|\n/g, ' ');
+}
+
+function servicesSection(services: string[]): string {
+  if (services.length === 0) return '## Services\n_none defined_';
+  return `## Services\n${services.map(s => `- ${code(s)}`).join('\n')}`;
+}
+
+function portsSection(ports: Record<string, PortRow[]>): string {
+  const rows = Object.entries(ports).flatMap(([svc, list]) =>
+    list.map(r => `| ${escapeCell(svc)} | ${escapeCell(r.host)} | ${escapeCell(r.container)} | ${escapeCell(r.proto)} |`),
+  );
+  if (rows.length === 0) return '## Ports\n_none_';
+  return ['## Ports', '| Service | Host | Container | Protocol |', '| --- | --- | --- | --- |', ...rows].join('\n');
+}
+
+function volumesSection(volumes: Record<string, VolumeRow[]>): string {
+  const rows = Object.entries(volumes).flatMap(([svc, list]) =>
+    list.map(r => `| ${escapeCell(svc)} | ${escapeCell(r.host)} | ${escapeCell(r.container)} |`),
+  );
+  if (rows.length === 0) return '## Volumes\n_none_';
+  return ['## Volumes', '| Service | Host | Container |', '| --- | --- | --- |', ...rows].join('\n');
+}
+
+function environmentSection(envFile: string | null, envVarCount: number, missingVars: string[]): string {
+  if (!envFile) return '## Environment\n- File: _none_';
+  const lines = [`- File: ${code(envFile)}`, `- Variables: ${envVarCount}`];
+  if (missingVars.length > 0) {
+    lines.push(`- Missing: ${missingVars.map(code).join(', ')}`);
+  }
+  return `## Environment\n${lines.join('\n')}`;
+}
+
+export function buildStackAnatomyMarkdown(input: AnatomyMarkdownInput): string {
+  const restart = input.restart ? code(input.restart) : '_default_';
+  const source = input.gitSource ? `git · ${input.gitSource}` : 'local';
+
+  return [
+    `# ${input.stackName}`,
+    servicesSection(input.services),
+    portsSection(input.ports),
+    volumesSection(input.volumes),
+    `## Restart policy\n${restart}`,
+    environmentSection(input.envFile, input.envVarCount, input.missingVars),
+    `## Network\n${code(input.networkName)} (bridge)`,
+    `## Source\n${source}`,
+  ].join('\n\n');
+}