diff --git a/src/app/HelpOverlay.tsx b/src/app/HelpOverlay.tsx
index 80e4d1d..a16a434 100644
--- a/src/app/HelpOverlay.tsx
+++ b/src/app/HelpOverlay.tsx
@@ -1,4 +1,5 @@
 import {Box, Text} from 'ink';
+import {commandNames} from '../commands/catalog.js';
 import type {ChatTheme} from '../ui/theme.js';
 
 export const HelpOverlay = ({theme}: {theme: ChatTheme}) => (
@@ -19,8 +20,7 @@ export const HelpOverlay = ({theme}: {theme: ChatTheme}) => (
     <Text color={theme.text}>Ctrl+G toggle this reference</Text>
     <Text color={theme.text}>Ctrl+C cancel or quit</Text>
     <Text color={theme.muted}>
-      Slash commands: /help /new /title /system /model /save /load /export /retry /regenerate /theme
-      /quit
+      Slash commands: {commandNames.map((name) => `/${name}`).join(' ')}
     </Text>
   </Box>
 );
diff --git a/tests/ui.test.tsx b/tests/ui.test.tsx
index 7d9758e..a17d698 100644
--- a/tests/ui.test.tsx
+++ b/tests/ui.test.tsx
@@ -1,6 +1,8 @@
 import React from 'react';
 import {render} from 'ink-testing-library';
 import {describe, expect, it} from 'vitest';
+import {HelpOverlay} from '../src/app/HelpOverlay.js';
+import {commandNames} from '../src/commands/index.js';
 import {createMessage} from '../src/model/index.js';
 import {MessageBubble} from '../src/ui/MessageBubble.js';
 import {relayTheme} from '../src/ui/theme.js';
@@ -17,4 +19,10 @@ describe('terminal message rendering', () => {
     expect(view.lastFrame()).toContain('local-model · 1.2s');
     expect(view.lastFrame()).toContain('const x = 1;');
   });
+
+  it('lists every slash command in the help overlay', () => {
+    const view = render(<HelpOverlay theme={relayTheme} />);
+    const frame = (view.lastFrame() ?? '').replace(/\s+/g, ' ');
+    for (const name of commandNames) expect(frame).toContain(`/${name}`);
+  });
 });