diff --git a/dashboards/admin-web/docs/roadmaps/UX_INTEGRATION_ADMIN.md b/dashboards/admin-web/docs/roadmaps/UX_INTEGRATION_ADMIN.md
index c3ba3476..546f5b4c 100644
--- a/dashboards/admin-web/docs/roadmaps/UX_INTEGRATION_ADMIN.md
+++ b/dashboards/admin-web/docs/roadmaps/UX_INTEGRATION_ADMIN.md
@@ -142,9 +142,16 @@ pnpm --filter @bytelyst/admin-web test:e2e   # Playwright + @axe-core (no new fa
       `--frozen-lockfile` clean). Vitest config: inline + `dedupe` react for SSR render tests.
       test **18 files / 159 tests** (+1 file / +19); typecheck+lint+build green (123 routes);
       format:check no new failures; e2e unchanged (see below).
-- [ ] **UX-3 — Command palette:** add `@bytelyst/command-palette`; mount `CommandRegistryProvider` +
+- [x] **UX-3 — Command palette:** add `@bytelyst/command-palette`; mount `CommandRegistryProvider` +
       `CommandPalette` (⌘K, lazy) in `(dashboard)/layout.tsx`; register navigate commands for the major
       surfaces (Users, Billing, Flags, Broadcasts, Audit, Experiments, Subscriptions, Licenses, Ops, …) + theme toggle + sign out; Vitest test palette opens on ⌘K.
+      — **DONE** `<SHA-UX3>` · `CommandRegistryProvider` wraps the dashboard; `CommandMenu`
+      (`useCommandPalette` ⌘K/Ctrl-K hotkey + lazy `next/dynamic` dialog via local
+      `command-palette-dialog.tsx` re-export) registers **21** navigate commands (`src/lib/admin-commands.ts`) + theme-toggle + sign-out actions; `onNavigate`→`router.push`. Dep added `workspace:*`
+      (importer-only lockfile change, `--frozen-lockfile` clean). Vitest: pure command-set tests +
+      happy-dom ⌘K/Ctrl-K interaction test (`react-dom/client` + `act`, no new deps; react deduped).
+      test **19 files / 165 tests** (+6); typecheck+lint+build green (123 routes); format:check no new
+      failures; e2e unchanged.
 - [ ] **UX-4 — Page chrome:** use `@bytelyst/dashboard-components` (`PageHeader`/`ErrorPage`/
       `NotFoundPage`/`LoadingSpinner`) on `error.tsx`/`not-found.tsx`/`loading.tsx` + a few high-traffic
       surfaces where chrome is bespoke. Keep it additive.
@@ -166,7 +173,7 @@ pnpm --filter @bytelyst/admin-web test:e2e   # Playwright + @axe-core (no new fa
 
 ```
 Setup  : UX-1 ✅
-Adopt  : UX-2 ✅  UX-3 ⬜  UX-4 ⬜  UX-5 ⬜  UX-6 ⬜(cond)
+Adopt  : UX-2 ✅  UX-3 ✅  UX-4 ⬜  UX-5 ⬜  UX-6 ⬜(cond)
 Cross  : CC.1 ⬜  CC.2 ⬜  CC.3 ⬜  CC.4 ⬜  CC.5 ⬜  CC.6 ⬜
 ```
 
diff --git a/dashboards/admin-web/package.json b/dashboards/admin-web/package.json
index 2a5134dd..ddf9218d 100644
--- a/dashboards/admin-web/package.json
+++ b/dashboards/admin-web/package.json
@@ -27,6 +27,7 @@
     "@bytelyst/api-client": "workspace:*",
     "@bytelyst/auth": "workspace:*",
     "@bytelyst/charts": "workspace:*",
+    "@bytelyst/command-palette": "workspace:*",
     "@bytelyst/config": "workspace:*",
     "@bytelyst/cosmos": "workspace:*",
     "@bytelyst/dashboard-components": "workspace:*",
diff --git a/dashboards/admin-web/src/__tests__/command-palette.test.tsx b/dashboards/admin-web/src/__tests__/command-palette.test.tsx
new file mode 100644
index 00000000..1a72e9b7
--- /dev/null
+++ b/dashboards/admin-web/src/__tests__/command-palette.test.tsx
@@ -0,0 +1,117 @@
+// @vitest-environment happy-dom
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { act } from 'react';
+import { createRoot, type Root } from 'react-dom/client';
+import { useCommandPalette } from '@bytelyst/command-palette';
+import { buildAdminCommands, NAV_COMMANDS } from '@/lib/admin-commands';
+
+/**
+ * UX-3 — command palette guard.
+ *
+ *  1. `buildAdminCommands` produces the expected navigate + action set, and the
+ *     action callbacks are correctly wired.
+ *  2. The ⌘K / Ctrl-K hotkey (via `useCommandPalette`) toggles the palette open.
+ */
+
+describe('buildAdminCommands', () => {
+  const base = () => buildAdminCommands({ resolvedTheme: 'light', toggleTheme() {}, signOut() {} });
+
+  it('includes navigate commands for the major surfaces', () => {
+    const cmds = base();
+    const navHrefs = cmds.filter(c => c.mode === 'navigate').map(c => c.href);
+    for (const href of [
+      '/users',
+      '/billing',
+      '/flags',
+      '/broadcasts',
+      '/audit',
+      '/experiments',
+      '/subscriptions',
+      '/licenses',
+      '/ops',
+    ]) {
+      expect(navHrefs).toContain(href);
+    }
+    expect(cmds.filter(c => c.mode === 'navigate')).toHaveLength(NAV_COMMANDS.length);
+  });
+
+  it('exposes theme-toggle + sign-out actions whose run callbacks fire', () => {
+    const toggleTheme = vi.fn();
+    const signOut = vi.fn();
+    const cmds = buildAdminCommands({ resolvedTheme: 'dark', toggleTheme, signOut });
+
+    const theme = cmds.find(c => c.id === 'action-toggle-theme');
+    const out = cmds.find(c => c.id === 'action-sign-out');
+    expect(theme?.label).toBe('Switch to light mode'); // dark -> offer light
+    expect(out?.mode).toBe('actions');
+
+    theme?.run?.();
+    out?.run?.();
+    expect(toggleTheme).toHaveBeenCalledTimes(1);
+    expect(signOut).toHaveBeenCalledTimes(1);
+  });
+
+  it('flips the theme label based on the resolved theme', () => {
+    const light = buildAdminCommands({ resolvedTheme: 'light', toggleTheme() {}, signOut() {} });
+    expect(light.find(c => c.id === 'action-toggle-theme')?.label).toBe('Switch to dark mode');
+  });
+});
+
+describe('⌘K hotkey opens the palette', () => {
+  let container: HTMLDivElement;
+  let root: Root;
+
+  function Harness() {
+    const cmdk = useCommandPalette();
+    return <span data-testid="state">{cmdk.open ? 'open' : 'closed'}</span>;
+  }
+
+  beforeEach(() => {
+    (globalThis as unknown as { IS_REACT_ACT_ENVIRONMENT: boolean }).IS_REACT_ACT_ENVIRONMENT =
+      true;
+    container = document.createElement('div');
+    document.body.appendChild(container);
+    root = createRoot(container);
+  });
+
+  afterEach(() => {
+    act(() => root.unmount());
+    container.remove();
+  });
+
+  function press(init: KeyboardEventInit) {
+    act(() => {
+      window.dispatchEvent(new KeyboardEvent('keydown', { bubbles: true, ...init }));
+    });
+  }
+
+  it('toggles open on Cmd-K and closed again', () => {
+    act(() => {
+      root.render(<Harness />);
+    });
+    expect(container.textContent).toBe('closed');
+
+    press({ key: 'k', metaKey: true });
+    expect(container.textContent).toBe('open');
+
+    press({ key: 'k', metaKey: true });
+    expect(container.textContent).toBe('closed');
+  });
+
+  it('also opens on Ctrl-K', () => {
+    act(() => {
+      root.render(<Harness />);
+    });
+    press({ key: 'k', ctrlKey: true });
+    expect(container.textContent).toBe('open');
+  });
+
+  it('ignores unmodified k and other keys', () => {
+    act(() => {
+      root.render(<Harness />);
+    });
+    press({ key: 'k' });
+    press({ key: 'j', metaKey: true });
+    expect(container.textContent).toBe('closed');
+  });
+});
diff --git a/dashboards/admin-web/src/app/(dashboard)/layout.tsx b/dashboards/admin-web/src/app/(dashboard)/layout.tsx
index 1c082708..acb905db 100644
--- a/dashboards/admin-web/src/app/(dashboard)/layout.tsx
+++ b/dashboards/admin-web/src/app/(dashboard)/layout.tsx
@@ -1,7 +1,9 @@
 'use client';
 
+import { CommandRegistryProvider } from '@bytelyst/command-palette';
 import { SidebarNav } from '@/components/sidebar-nav';
 import { AuthGuard } from '@/components/auth-guard';
+import { CommandMenu } from '@/components/command-menu';
 import { ErrorBoundary } from '@/components/error-boundary';
 import { useStripeConfig } from '@/lib/stripe-context';
 import { FlaskConical, ShieldCheck } from 'lucide-react';
@@ -32,13 +34,16 @@ function StripeModeBanner() {
 export default function DashboardLayout({ children }: { children: React.ReactNode }) {
   return (
     <AuthGuard>
-      <SidebarNav />
-      <main className="ml-64 min-h-screen bg-background max-md:ml-0">
-        <StripeModeBanner />
-        <div className="p-8 max-md:p-4">
-          <ErrorBoundary>{children}</ErrorBoundary>
-        </div>
-      </main>
+      <CommandRegistryProvider>
+        <SidebarNav />
+        <main className="ml-64 min-h-screen bg-background max-md:ml-0">
+          <StripeModeBanner />
+          <div className="p-8 max-md:p-4">
+            <ErrorBoundary>{children}</ErrorBoundary>
+          </div>
+        </main>
+        <CommandMenu />
+      </CommandRegistryProvider>
     </AuthGuard>
   );
 }
diff --git a/dashboards/admin-web/src/components/command-menu.tsx b/dashboards/admin-web/src/components/command-menu.tsx
new file mode 100644
index 00000000..6636b756
--- /dev/null
+++ b/dashboards/admin-web/src/components/command-menu.tsx
@@ -0,0 +1,58 @@
+'use client';
+
+import { useMemo } from 'react';
+import dynamic from 'next/dynamic';
+import { useRouter } from 'next/navigation';
+import { useCommandPalette, useRegisterCommands } from '@bytelyst/command-palette';
+import { useAuth } from '@/lib/auth-context';
+import { useTheme } from '@/lib/theme-context';
+import { buildAdminCommands } from '@/lib/admin-commands';
+
+// Lazy-load the dialog itself (own chunk, client only) — see
+// command-palette-dialog.tsx for why the dynamic target is a local re-export.
+const CommandPalette = dynamic(
+  () => import('./command-palette-dialog').then(m => ({ default: m.CommandPalette })),
+  { ssr: false }
+);
+
+/**
+ * Mounts the ⌘K command palette for the dashboard (UX-3). Registers
+ * navigate-mode commands for the major surfaces plus theme-toggle / sign-out
+ * actions, and binds the global ⌘K / Ctrl-K hotkey via `useCommandPalette`.
+ *
+ * Must render inside a `<CommandRegistryProvider>` (mounted in the dashboard
+ * layout) so `useRegisterCommands` and the dialog share one registry.
+ */
+export function CommandMenu() {
+  const router = useRouter();
+  const { logout } = useAuth();
+  const { resolved, setTheme } = useTheme();
+  const cmdk = useCommandPalette();
+
+  const commands = useMemo(
+    () =>
+      buildAdminCommands({
+        resolvedTheme: resolved,
+        toggleTheme: () => setTheme(resolved === 'dark' ? 'light' : 'dark'),
+        signOut: () => {
+          logout();
+          router.replace('/login');
+        },
+      }),
+    [resolved, setTheme, logout, router]
+  );
+
+  useRegisterCommands(commands);
+
+  return (
+    <CommandPalette
+      open={cmdk.open}
+      onClose={cmdk.hide}
+      ariaLabel="Admin command palette"
+      onNavigate={href => {
+        cmdk.hide();
+        router.push(href);
+      }}
+    />
+  );
+}
diff --git a/dashboards/admin-web/src/components/command-palette-dialog.tsx b/dashboards/admin-web/src/components/command-palette-dialog.tsx
new file mode 100644
index 00000000..b1b768c4
--- /dev/null
+++ b/dashboards/admin-web/src/components/command-palette-dialog.tsx
@@ -0,0 +1,10 @@
+'use client';
+
+/**
+ * Static re-export seam for the heavy `<CommandPalette>` dialog so it can be
+ * code-split via `next/dynamic` from `command-menu.tsx`. As with the charts
+ * seam, the dynamic-import target must be a *local* module: a direct
+ * `import('@bytelyst/command-palette')` trips Next's package-`exports`
+ * resolver (the package declares only an `import` condition).
+ */
+export { CommandPalette } from '@bytelyst/command-palette';
diff --git a/dashboards/admin-web/src/lib/admin-commands.ts b/dashboards/admin-web/src/lib/admin-commands.ts
new file mode 100644
index 00000000..28c61d88
--- /dev/null
+++ b/dashboards/admin-web/src/lib/admin-commands.ts
@@ -0,0 +1,102 @@
+/**
+ * Command registry contributions for the admin ⌘K palette (UX-3).
+ *
+ * Kept framework-free (pure data + callbacks) so the command set is
+ * unit-testable in the node vitest env without rendering anything.
+ */
+import type { Command } from '@bytelyst/command-palette';
+
+/** Curated navigate targets — the major admin surfaces. */
+export const NAV_COMMANDS: ReadonlyArray<{
+  id: string;
+  label: string;
+  href: string;
+  keywords?: string[];
+}> = [
+  { id: 'nav-dashboard', label: 'Dashboard', href: '/', keywords: ['home', 'overview'] },
+  { id: 'nav-users', label: 'Users', href: '/users', keywords: ['accounts', 'people'] },
+  {
+    id: 'nav-subscriptions',
+    label: 'Subscriptions',
+    href: '/subscriptions',
+    keywords: ['plans', 'billing'],
+  },
+  { id: 'nav-licenses', label: 'Licenses', href: '/licenses', keywords: ['seats'] },
+  { id: 'nav-billing', label: 'Billing', href: '/billing', keywords: ['invoices', 'payments'] },
+  { id: 'nav-usage', label: 'Usage Analytics', href: '/usage', keywords: ['metrics', 'tokens'] },
+  { id: 'nav-broadcasts', label: 'Broadcasts', href: '/broadcasts', keywords: ['announcements'] },
+  { id: 'nav-surveys', label: 'Surveys', href: '/surveys', keywords: ['feedback', 'nps'] },
+  { id: 'nav-flags', label: 'Feature Flags', href: '/flags', keywords: ['toggles', 'rollout'] },
+  {
+    id: 'nav-experiments',
+    label: 'Experiments',
+    href: '/experiments',
+    keywords: ['ab', 'a/b', 'tests'],
+  },
+  { id: 'nav-audit', label: 'Audit Log', href: '/audit', keywords: ['history', 'events'] },
+  { id: 'nav-products', label: 'Products', href: '/products' },
+  { id: 'nav-invitations', label: 'Invitations', href: '/invitations', keywords: ['invites'] },
+  { id: 'nav-promos', label: 'Promo Codes', href: '/promos', keywords: ['coupons', 'discounts'] },
+  { id: 'nav-referrals', label: 'Referrals', href: '/referrals' },
+  {
+    id: 'nav-notifications',
+    label: 'Notifications',
+    href: '/notifications',
+    keywords: ['alerts'],
+  },
+  { id: 'nav-organizations', label: 'Organizations', href: '/organizations', keywords: ['orgs'] },
+  { id: 'nav-ops', label: 'Mission Control', href: '/ops', keywords: ['ops', 'operations'] },
+  {
+    id: 'nav-client-logs',
+    label: 'Client Logs',
+    href: '/ops/client-logs',
+    keywords: ['telemetry', 'errors'],
+  },
+  { id: 'nav-extraction', label: 'Extraction', href: '/extraction' },
+  { id: 'nav-settings', label: 'Settings', href: '/settings', keywords: ['config', 'preferences'] },
+];
+
+export interface AdminCommandActions {
+  /** Theme-aware label uses this to read the current mode. */
+  resolvedTheme?: 'light' | 'dark';
+  /** Toggle light/dark theme. */
+  toggleTheme: () => void;
+  /** Sign the admin out and return to /login. */
+  signOut: () => void;
+}
+
+/**
+ * Build the full admin command set: navigate-mode entries for the major
+ * surfaces plus the app-chrome actions (theme toggle, sign out).
+ */
+export function buildAdminCommands(actions: AdminCommandActions): Command[] {
+  const navigate: Command[] = NAV_COMMANDS.map(n => ({
+    id: n.id,
+    label: n.label,
+    mode: 'navigate',
+    href: n.href,
+    section: 'Go to',
+    keywords: n.keywords,
+  }));
+
+  const chrome: Command[] = [
+    {
+      id: 'action-toggle-theme',
+      label: actions.resolvedTheme === 'dark' ? 'Switch to light mode' : 'Switch to dark mode',
+      mode: 'actions',
+      section: 'Preferences',
+      keywords: ['theme', 'dark', 'light', 'appearance'],
+      run: actions.toggleTheme,
+    },
+    {
+      id: 'action-sign-out',
+      label: 'Sign out',
+      mode: 'actions',
+      section: 'Account',
+      keywords: ['logout', 'log out', 'exit'],
+      run: actions.signOut,
+    },
+  ];
+
+  return [...navigate, ...chrome];
+}
diff --git a/dashboards/admin-web/vitest.config.ts b/dashboards/admin-web/vitest.config.ts
index d133e4d7..882cbcbc 100644
--- a/dashboards/admin-web/vitest.config.ts
+++ b/dashboards/admin-web/vitest.config.ts
@@ -13,7 +13,7 @@ export default defineConfig({
     // The real Next/webpack build already dedupes these to admin-web's React.
     server: {
       deps: {
-        inline: [/@bytelyst\/(charts|data-viz)/],
+        inline: [/@bytelyst\/(charts|data-viz|command-palette)/],
       },
     },
     coverage: {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d8b420d4..15b58758 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -92,6 +92,9 @@ importers:
       '@bytelyst/charts':
         specifier: workspace:*
         version: link:../../packages/charts
+      '@bytelyst/command-palette':
+        specifier: workspace:*
+        version: link:../../packages/command-palette
       '@bytelyst/config':
         specifier: workspace:*
         version: link:../../packages/config