diff --git a/apps/desktop/src/app/session/hooks/use-prompt-actions.ts b/apps/desktop/src/app/session/hooks/use-prompt-actions.ts
index 4c1b50b83ad..829119f65b4 100644
--- a/apps/desktop/src/app/session/hooks/use-prompt-actions.ts
+++ b/apps/desktop/src/app/session/hooks/use-prompt-actions.ts
@@ -58,6 +58,7 @@ import { clearSessionTodos } from '@/store/todos'
 
 import type {
   ClientSessionState,
+  BrowserManageResponse,
   FileAttachResponse,
   HandoffFailResponse,
   HandoffRequestResponse,
@@ -1141,6 +1142,81 @@ export function usePromptActions({
           } catch (err) {
             renderSlashOutput(`error: ${err instanceof Error ? err.message : String(err)}`)
           }
+        },
+        // /browser connect|disconnect|status manages the live CDP connection on
+        // the gateway host, mirroring the TUI's browser.manage RPC. It mutates
+        // BROWSER_CDP_URL (and may launch Chrome) in the gateway process — only
+        // meaningful when that process runs on this machine, so it's gated to
+        // local connections. A remote gateway would act on the wrong host.
+        browser: async ctx => {
+          const resolved = await withSlashOutput(ctx)
+
+          if (!resolved) {
+            return
+          }
+
+          const { render: renderSlashOutput, sessionId } = resolved
+
+          if ($connection.get()?.mode === 'remote') {
+            renderSlashOutput(
+              '/browser manages a Chromium-family browser on the gateway host — only available when connected to a local gateway.'
+            )
+
+            return
+          }
+
+          const [rawAction = 'status', ...rest] = ctx.arg.trim().split(/\s+/).filter(Boolean)
+          const cmdAction = rawAction.toLowerCase()
+
+          if (!['connect', 'disconnect', 'status'].includes(cmdAction)) {
+            renderSlashOutput(
+              'usage: /browser [connect|disconnect|status] [url] · persistent: set browser.cdp_url in config.yaml'
+            )
+
+            return
+          }
+
+          const url = cmdAction === 'connect' ? rest.join(' ').trim() || 'http://127.0.0.1:9222' : undefined
+
+          if (url) {
+            renderSlashOutput(`checking Chromium-family browser remote debugging at ${url}...`)
+          }
+
+          try {
+            const result = await requestGateway<BrowserManageResponse>('browser.manage', {
+              action: cmdAction,
+              session_id: sessionId,
+              ...(url && { url })
+            })
+
+            // Without a streamed session subscription, the gateway bundles its
+            // progress lines into `messages` — flush them inline.
+            result?.messages?.forEach(message => renderSlashOutput(message))
+
+            if (cmdAction === 'status') {
+              renderSlashOutput(
+                result?.connected
+                  ? `browser connected: ${result.url || '(url unavailable)'}`
+                  : 'browser not connected (try /browser connect <url> or set browser.cdp_url in config.yaml)'
+              )
+
+              return
+            }
+
+            if (cmdAction === 'disconnect') {
+              renderSlashOutput('browser disconnected')
+
+              return
+            }
+
+            if (result?.connected) {
+              renderSlashOutput('Browser connected to live Chromium-family browser via CDP')
+              renderSlashOutput(`Endpoint: ${result.url || '(url unavailable)'}`)
+              renderSlashOutput('next browser tool call will use this CDP endpoint')
+            }
+          } catch (err) {
+            renderSlashOutput(`error: ${err instanceof Error ? err.message : String(err)}`)
+          }
         }
       }
 
diff --git a/apps/desktop/src/app/types.ts b/apps/desktop/src/app/types.ts
index 5082b70406d..9500468482c 100644
--- a/apps/desktop/src/app/types.ts
+++ b/apps/desktop/src/app/types.ts
@@ -46,6 +46,12 @@ export interface SlashExecResponse {
   warning?: string
 }
 
+export interface BrowserManageResponse {
+  connected?: boolean
+  url?: string
+  messages?: string[]
+}
+
 export interface SessionSteerResponse {
   // 'queued' == accepted into the live turn's steer slot (injected at the next
   // tool-result boundary); 'rejected' == no live tool window, caller queues.
diff --git a/apps/desktop/src/lib/desktop-slash-commands.test.ts b/apps/desktop/src/lib/desktop-slash-commands.test.ts
index d37738173ce..54f5a6f89df 100644
--- a/apps/desktop/src/lib/desktop-slash-commands.test.ts
+++ b/apps/desktop/src/lib/desktop-slash-commands.test.ts
@@ -52,6 +52,17 @@ describe('desktop slash command curation', () => {
     expect(desktopSlashUnavailableMessage('/personality')).toBeNull()
   })
 
+  it('treats /browser as an executable action command (local-gateway connect)', () => {
+    // /browser used to be terminal-only; it now resolves to a desktop action
+    // handler that routes browser.manage RPC when the gateway is local.
+    expect(isDesktopSlashCommand('/browser')).toBe(true)
+    expect(isDesktopSlashSuggestion('/browser')).toBe(true)
+    expect(desktopSlashUnavailableMessage('/browser')).toBeNull()
+    expect(resolveDesktopCommand('/browser')?.surface).toEqual({ kind: 'action', action: 'browser' })
+    // Bare /browser expands to its sub-action options in the popover.
+    expect(resolveDesktopCommand('/browser')?.args).toBe(true)
+  })
+
   it('allows aliases to execute without cluttering the popover', () => {
     expect(isDesktopSlashSuggestion('/reset')).toBe(false)
     expect(isDesktopSlashCommand('/reset')).toBe(true)
diff --git a/apps/desktop/src/lib/desktop-slash-commands.ts b/apps/desktop/src/lib/desktop-slash-commands.ts
index d898a6c83f1..f9ae934edf4 100644
--- a/apps/desktop/src/lib/desktop-slash-commands.ts
+++ b/apps/desktop/src/lib/desktop-slash-commands.ts
@@ -30,6 +30,7 @@ export interface DesktopThemeCommandOption {
  */
 export type DesktopActionId =
   | 'branch'
+  | 'browser'
   | 'handoff'
   | 'help'
   | 'new'
@@ -103,6 +104,12 @@ const DESKTOP_COMMAND_SPECS: readonly DesktopCommandSpec[] = [
   { name: '/skin', description: 'Switch desktop theme or cycle to the next one', surface: action('skin'), args: true },
   { name: '/title', description: 'Rename the current session', surface: action('title') },
   { name: '/help', description: 'Show desktop slash commands', aliases: ['/commands'], surface: action('help') },
+  {
+    name: '/browser',
+    description: 'Manage browser CDP connection [connect|disconnect|status] (local gateway only)',
+    surface: action('browser'),
+    args: true
+  },
 
   // Overlay pickers
   { name: '/model', description: 'Switch the model for this session', surface: picker('model'), hidden: true },
@@ -142,7 +149,7 @@ const DESKTOP_COMMAND_SPECS: readonly DesktopCommandSpec[] = [
 // per reason beats 40 identical object literals.
 const NO_DESKTOP_SURFACE: Record<DesktopUnavailableReason, readonly string[]> = {
   terminal: [
-    '/browser', '/busy', '/clear', '/compact', '/config', '/copy', '/cron', '/details',
+    '/busy', '/clear', '/compact', '/config', '/copy', '/cron', '/details',
     '/exit', '/footer', '/gateway', '/gquota', '/history', '/image', '/indicator', '/logs',
     '/mouse', '/paste', '/platforms', '/plugins', '/quit', '/redraw', '/reload', '/restart',
     '/sb', '/set-home', '/sethome', '/snap', '/snapshot', '/statusbar', '/toolsets', '/update', '/verbose'