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diff --git a/docs/design/evidence/task-040-github-app-setup-before.png b/docs/design/evidence/task-040-github-app-setup-before.png
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diff --git a/frontend/src/v2/__tests__/V2ConnectorTools.test.tsx b/frontend/src/v2/__tests__/V2ConnectorTools.test.tsx
index cc1ad5584..24b30696b 100644
--- a/frontend/src/v2/__tests__/V2ConnectorTools.test.tsx
+++ b/frontend/src/v2/__tests__/V2ConnectorTools.test.tsx
@@ -196,6 +196,64 @@ test('a not-yet row without a Connection or on an unconfigured instance offers n
   renderTools();
   expect(await screen.findByText('install the GitHub App first · an admin does this once')).toBeInTheDocument();
   expect(screen.queryByRole('button', { name: 'Add' })).toBeNull();
+  expect(screen.queryByRole('button', { name: 'Install GitHub App' })).toBeNull();
+});
+
+test('an admin can install the GitHub App from the no-connection Tools row', async () => {
+  const noConnection = { ...githubEntry, connections: [] };
+  axios.get.mockImplementation((url) => {
+    if (url === '/api/installables') return Promise.resolve({ data: { installables: [noConnection] } });
+    if (url.endsWith('/grants')) return Promise.resolve({ data: { grants: [] } });
+    if (url.includes('/registry/pods/')) return Promise.resolve({ data: { agents: [] } });
+    return Promise.reject(new Error(`unmocked ${url}`));
+  });
+  axios.post.mockResolvedValue({ data: { integration: { installationId: 'install-42', createdBy: 'u1' } } });
+  const admin = {
+    ...authValue,
+    currentUser: { ...authValue.currentUser, role: 'admin' },
+    user: { ...authValue.user, role: 'admin' },
+  };
+  render(<AuthContext.Provider value={admin}><MemoryRouter><V2ConnectorTools pods={pods} /></MemoryRouter></AuthContext.Provider>);
+
+  fireEvent.click(await screen.findByRole('button', { name: 'Install GitHub App' }));
+  const form = await screen.findByRole('complementary', { name: 'Install GitHub App' });
+  fireEvent.change(within(form).getByRole('textbox', { name: 'installation ID' }), { target: { value: 'install-42' } });
+  fireEvent.change(within(form).getByRole('textbox', { name: 'owner' }), { target: { value: 'Team-Commonly' } });
+  fireEvent.change(within(form).getByRole('textbox', { name: 'repository' }), { target: { value: 'commonly' } });
+  fireEvent.click(within(form).getByRole('button', { name: 'Install GitHub App' }));
+  await waitFor(() => expect(axios.post).toHaveBeenCalledWith(
+    '/api/integrations/github-app',
+    { installationId: 'install-42', owner: 'Team-Commonly', repo: 'commonly' },
+    expect.any(Object),
+  ));
+  await waitFor(() => expect(screen.queryByRole('complementary', { name: 'Install GitHub App' })).toBeNull());
+});
+
+test('an admin is told when another administrator already owns the GitHub App installation', async () => {
+  const noConnection = { ...githubEntry, connections: [] };
+  axios.get.mockImplementation((url) => {
+    if (url === '/api/installables') return Promise.resolve({ data: { installables: [noConnection] } });
+    if (url.endsWith('/grants')) return Promise.resolve({ data: { grants: [] } });
+    if (url.includes('/registry/pods/')) return Promise.resolve({ data: { agents: [] } });
+    return Promise.reject(new Error(`unmocked ${url}`));
+  });
+  axios.post.mockResolvedValue({ data: { integration: { installationId: 'install-42', createdBy: 'other-admin' } } });
+  const admin = {
+    ...authValue,
+    currentUser: { ...authValue.currentUser, _id: 'u2', role: 'admin' },
+    user: { ...authValue.user, _id: 'u2', role: 'admin' },
+  };
+  render(<AuthContext.Provider value={admin}><MemoryRouter><V2ConnectorTools pods={pods} /></MemoryRouter></AuthContext.Provider>);
+
+  fireEvent.click(await screen.findByRole('button', { name: 'Install GitHub App' }));
+  const form = await screen.findByRole('complementary', { name: 'Install GitHub App' });
+  fireEvent.change(within(form).getByRole('textbox', { name: 'installation ID' }), { target: { value: 'install-42' } });
+  fireEvent.change(within(form).getByRole('textbox', { name: 'owner' }), { target: { value: 'Team-Commonly' } });
+  fireEvent.change(within(form).getByRole('textbox', { name: 'repository' }), { target: { value: 'commonly' } });
+  fireEvent.click(within(form).getByRole('button', { name: 'Install GitHub App' }));
+
+  await waitFor(() => expect(within(form).getByRole('alert')).toHaveTextContent('This GitHub App is already installed by another administrator.'));
+  expect(screen.getByRole('complementary', { name: 'Install GitHub App' })).toBeInTheDocument();
 });
 
 test('an unavailable not-yet tool row offers the same Ask affordance as unavailable channels', async () => {
diff --git a/frontend/src/v2/components/V2ConnectorTools.tsx b/frontend/src/v2/components/V2ConnectorTools.tsx
index dac556c0b..b3605de75 100644
--- a/frontend/src/v2/components/V2ConnectorTools.tsx
+++ b/frontend/src/v2/components/V2ConnectorTools.tsx
@@ -86,6 +86,18 @@ interface DraftGrant {
   replaces: string | null;
 }
 
+interface GithubAppSetup {
+  installationId: string;
+  owner: string;
+  repo: string;
+}
+
+interface GithubAppIntegrationResponse {
+  integration?: {
+    createdBy?: string | { _id?: string } | null;
+  };
+}
+
 const USED_RECENTLY_MS = 10 * 60 * 1000;
 const MAX_PODS = 20;
 const MODE_RANK: Record<GrantWriteMode, number> = { read: 0, 'write-with-confirm': 1, write: 2 };
@@ -140,6 +152,7 @@ const V2ConnectorTools: React.FC<Props> = ({ pods }) => {
   const [trailError, setTrailError] = useState(false);
   const [selectedId, setSelectedId] = useState<string | null>(null);
   const [draft, setDraft] = useState<DraftGrant | null>(null);
+  const [githubAppSetup, setGithubAppSetup] = useState<GithubAppSetup | null>(null);
   // Change access minted the new grant but the revoke of the old one failed: only the revoke is retried.
   const [staleAfterChange, setStaleAfterChange] = useState<{ oldGrantId: string; newGrantId: string } | null>(null);
   const [confirmRevoke, setConfirmRevoke] = useState<string | null>(null);
@@ -148,6 +161,8 @@ const V2ConnectorTools: React.FC<Props> = ({ pods }) => {
   const [query, setQuery] = useState('');
   const [segment, setSegment] = useState<'all' | 'granted' | 'not-yet'>('all');
 
+  const isAdmin = currentUser?.role === 'admin';
+
   const podIds = useMemo(() => pods.slice(0, MAX_PODS).map((pod) => String(pod._id)), [pods]);
 
   const load = useCallback(async () => {
@@ -286,6 +301,13 @@ const V2ConnectorTools: React.FC<Props> = ({ pods }) => {
     setConfirmRevoke(null);
     setError(null);
   };
+  const openGithubAppSetup = () => {
+    setGithubAppSetup({ installationId: '', owner: '', repo: '' });
+    setDraft(null);
+    setSelectedId(null);
+    setConfirmRevoke(null);
+    setError(null);
+  };
   const draftEntry = draft ? catalog.find((entry) => entry.installableId === draft.installableId) || null : null;
   const draftTools = (entry: ToolCatalogEntry | null, mode: GrantWriteMode): string[] => (entry?.tools || [])
     .filter((tool) => MODE_RANK[tool.requiredWriteMode] <= MODE_RANK[mode]).map((tool) => tool.name);
@@ -332,6 +354,39 @@ const V2ConnectorTools: React.FC<Props> = ({ pods }) => {
     }
   };
 
+  const submitGithubAppSetup = async () => {
+    if (!githubAppSetup || !isAdmin) return;
+    const installationId = githubAppSetup.installationId.trim();
+    const owner = githubAppSetup.owner.trim();
+    const repo = githubAppSetup.repo.trim();
+    if (!installationId || !owner || !repo) {
+      setError(t('tools.githubAppRequired', { defaultValue: 'Enter the installation ID, owner, and repository.' }));
+      return;
+    }
+    setBusy(true);
+    setError(null);
+    try {
+      const response = await api.post<GithubAppIntegrationResponse>('/api/integrations/github-app', { installationId, owner, repo });
+      const createdBy = response?.integration?.createdBy;
+      const createdById = typeof createdBy === 'string'
+        ? createdBy
+        : createdBy && typeof createdBy === 'object' && createdBy._id
+          ? String(createdBy._id)
+          : '';
+      if (createdById && viewerId && createdById !== viewerId) {
+        setError(t('tools.githubAppOwnedByOther', { defaultValue: 'This GitHub App is already installed by another administrator.' }));
+        return;
+      }
+      setGithubAppSetup(null);
+      await load();
+    } catch (err) {
+      const code = (err as { response?: { data?: { error?: string; message?: string } } })?.response?.data;
+      setError(code?.message || code?.error || t('tools.githubAppError', { defaultValue: 'Could not install the GitHub App.' }));
+    } finally {
+      setBusy(false);
+    }
+  };
+
   const retryStaleRevoke = async () => {
     if (!staleAfterChange) return;
     setBusy(true);
@@ -420,6 +475,7 @@ const V2ConnectorTools: React.FC<Props> = ({ pods }) => {
 
   const renderNotYet = (entry: ToolCatalogEntry) => {
     const canAdd = entry.available && entry.connections.length > 0 && podIds.length > 0;
+    const canInstallGithubApp = isAdmin && entry.installableId === 'github' && entry.available && entry.connections.length === 0;
     return (
       <article key={entry.installableId} className={`v2-connector-row v2-connector-row--not-yet${!entry.available ? ' v2-connector-row--not-enabled' : ''}`}>
         <span className="v2-connector-row__name">
@@ -448,10 +504,71 @@ const V2ConnectorTools: React.FC<Props> = ({ pods }) => {
             {t('tools.add', { defaultValue: 'Add' })}
           </button>
         )}
+        {canInstallGithubApp && (
+          <button type="button" className="v2-connector-row__action" onClick={openGithubAppSetup}>
+            {t('tools.installGitHubApp', { defaultValue: 'Install GitHub App' })}
+          </button>
+        )}
       </article>
     );
   };
 
+  const renderGithubAppSetup = () => {
+    if (!githubAppSetup) return null;
+    return (
+      <aside className="v2-connectors__aside v2-tools__aside" aria-label={t('tools.installGitHubApp', { defaultValue: 'Install GitHub App' })}>
+        <section className="v2-connector-aside__card">
+          <p className="v2-connector-aside__eyebrow">{t('tools.adminSetup', { defaultValue: 'administrator setup' })}</p>
+          <h2>{t('tools.installGitHubApp', { defaultValue: 'Install GitHub App' })}</h2>
+          <p>{t('tools.githubAppSetupHint', { defaultValue: 'Connect the GitHub App once so people can grant GitHub tools to their rooms.' })}</p>
+          <div className="v2-tools__form">
+            <label className="v2-tools__field">
+              <span>{t('tools.installationId', { defaultValue: 'installation ID' })}</span>
+              <input
+                className="v2-tools__input"
+                value={githubAppSetup.installationId}
+                onChange={(event) => setGithubAppSetup({ ...githubAppSetup, installationId: event.target.value })}
+                aria-label={t('tools.installationId', { defaultValue: 'installation ID' })}
+              />
+            </label>
+            <label className="v2-tools__field">
+              <span>{t('tools.owner', { defaultValue: 'owner' })}</span>
+              <input
+                className="v2-tools__input"
+                value={githubAppSetup.owner}
+                onChange={(event) => setGithubAppSetup({ ...githubAppSetup, owner: event.target.value })}
+                aria-label={t('tools.owner', { defaultValue: 'owner' })}
+              />
+            </label>
+            <label className="v2-tools__field">
+              <span>{t('tools.repository', { defaultValue: 'repository' })}</span>
+              <input
+                className="v2-tools__input"
+                value={githubAppSetup.repo}
+                onChange={(event) => setGithubAppSetup({ ...githubAppSetup, repo: event.target.value })}
+                aria-label={t('tools.repository', { defaultValue: 'repository' })}
+              />
+            </label>
+          </div>
+          <div className="v2-connector-aside__actions">
+            <button
+              type="button"
+              className="v2-connector-aside__primary"
+              disabled={busy || !githubAppSetup.installationId.trim() || !githubAppSetup.owner.trim() || !githubAppSetup.repo.trim()}
+              onClick={() => { void submitGithubAppSetup(); }}
+            >
+              {busy ? t('tools.installingGitHubApp', { defaultValue: 'Installing…' }) : t('tools.installGitHubApp', { defaultValue: 'Install GitHub App' })}
+            </button>
+            <button type="button" className="v2-connector-aside__secondary" disabled={busy} onClick={() => setGithubAppSetup(null)}>
+              {t('tools.cancel', { defaultValue: 'Cancel' })}
+            </button>
+          </div>
+          {error && <p className="v2-connector-aside__note" role="alert">{error}</p>}
+        </section>
+      </aside>
+    );
+  };
+
   const renderDraft = () => {
     if (!draft || !draftEntry) return null;
     const podSeats = seats[draft.podId] || [];
@@ -670,7 +787,7 @@ const V2ConnectorTools: React.FC<Props> = ({ pods }) => {
           )}
         </div>
       </section>
-      {draft ? renderDraft() : (selected ? renderAside(selected) : null)}
+      {draft ? renderDraft() : (selected ? renderAside(selected) : renderGithubAppSetup())}
     </div>
   );
 };
diff --git a/frontend/src/v2/v2.css b/frontend/src/v2/v2.css
index b42efdcaa..3b52d6ec6 100644
--- a/frontend/src/v2/v2.css
+++ b/frontend/src/v2/v2.css
@@ -9810,6 +9810,8 @@ body.modern-ui.v2-canvas {
 .v2-tools__form { display: grid; gap: 14px; margin-top: 14px; }
 .v2-tools__field { display: grid; gap: 6px; margin: 0; padding: 0; border: none; min-width: 0; }
 .v2-tools__field > span:first-child, .v2-tools__field > legend { color: var(--v2-text-tertiary); font-family: var(--v2-font-mono); font-size: 11px; line-height: 16px; text-transform: lowercase; padding: 0; }
+.v2-tools__input { min-width: 0; min-height: 40px; padding: 0 10px; border: 1px solid var(--v2-border); border-radius: var(--v2-radius-sm); background: var(--v2-surface); color: var(--v2-ink); font: 500 13px var(--v2-font); }
+.v2-tools__input:focus-visible { outline: 2px solid var(--v2-accent); outline-offset: 0; }
 .v2-tools__agents { display: grid; gap: 6px; }
 .v2-tools__hint { color: var(--v2-text-secondary); font-size: 12px; line-height: 18px; }
 .v2-tools__hint code { display: inline-block; margin: 0 6px 4px 0; padding: 1px 6px; border: 1px solid var(--v2-border-soft); border-radius: var(--v2-radius-sm); font-family: var(--v2-font-mono); font-size: 12px; white-space: nowrap; }