Add browser use as a subagent! Get system info on whether chrome is installed and pass into base agent

Author: jahooma

agents/base2/base2.ts

@@ -82,11 +82,12 @@ export function createBase2(
       isMax && 'thinker-best-of-n-opus',
       isDefault && 'editor',
       isMax && 'editor-multi-prompt',
+      'tmux-cli',
+      'browser-use',
       isFree && 'code-reviewer-lite',
       isDefault && 'code-reviewer',
       isMax && 'code-reviewer-multi-prompt',
       'thinker-gpt',
-      'tmux-cli',
       'context-pruner',
     ),
 

agents/browser-use/browser-use.ts

@@ -23,7 +23,7 @@ const definition: AgentDefinition = {
 3. Check \`consoleErrors\` for any JavaScript errors found
 4. Check \`lessons\` for advice on improving future runs
 
-**Requirements:** Chrome must be installed on the user's machine. The MCP server downloads automatically via npx on first use.`,
+**Requirements:** Chrome must be installed. Check System Info for "Chrome: installed" before spawning. If Chrome is not found, do NOT spawn this agent — instead inform the user that the browser-use agent requires Google Chrome or Chromium to be installed.`,
 
   inputSchema: {
     prompt: {

common/src/__tests__/handlesteps-parsing.test.ts

@@ -43,6 +43,7 @@ describe('handleSteps Parsing Tests', () => {
         arch: 'test',
         homedir: '/test',
         cpus: 1,
+        chromeAvailable: false,
       },
       tokenCallers: {},
     }

common/src/testing/fixtures/agent-runtime.ts

@@ -48,6 +48,7 @@ export const mockFileContext: ProjectFileContext = {
     arch: 'test',
     homedir: '/home/test',
     cpus: 1,
+    chromeAvailable: false,
   },
 }
 

common/src/util/file.ts

@@ -84,6 +84,7 @@ export const ProjectFileContextSchema = z.object({
     arch: z.string(),
     homedir: z.string(),
     cpus: z.number(),
+    chromeAvailable: z.boolean(),
   }),
 })
 
@@ -113,6 +114,7 @@ export type ProjectFileContext = {
     arch: string
     homedir: string
     cpus: number
+    chromeAvailable: boolean
   }
 }
 
@@ -157,6 +159,7 @@ export const getStubProjectFileContext = (): ProjectFileContext => ({
     arch: '',
     homedir: '',
     cpus: 0,
+    chromeAvailable: false,
   },
 })
 

common/src/util/system-info.ts

@@ -1,3 +1,4 @@
+import fs from 'fs'
 import os from 'os'
 import path from 'path'
 import { platform } from 'process'
@@ -6,15 +7,47 @@ import { getProcessEnv } from '../env-process'
 
 import type { ProcessEnv } from '../types/contracts/env'
 
+const CHROME_PATHS: Record<string, string[]> = {
+  darwin: [
+    '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
+    '/Applications/Google Chrome Beta.app/Contents/MacOS/Google Chrome Beta',
+    '/Applications/Google Chrome Dev.app/Contents/MacOS/Google Chrome Dev',
+    '/Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary',
+    '/Applications/Chromium.app/Contents/MacOS/Chromium',
+  ],
+  linux: [
+    '/usr/bin/google-chrome',
+    '/usr/bin/google-chrome-stable',
+    '/usr/bin/google-chrome-beta',
+    '/usr/bin/google-chrome-unstable',
+    '/usr/bin/chromium',
+    '/usr/bin/chromium-browser',
+    '/snap/bin/chromium',
+  ],
+  win32: [
+    'C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe',
+    'C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe',
+    `${process.env.LOCALAPPDATA ?? ''}\\Google\\Chrome\\Application\\chrome.exe`,
+  ],
+}
+
+export const findChromeExecutable = (): string | null => {
+  const paths = CHROME_PATHS[platform] ?? []
+  for (const p of paths) {
+    if (p && fs.existsSync(p)) return p
+  }
+  return null
+}
+
 export const getSystemInfo = (processEnv: ProcessEnv = getProcessEnv()) => {
-  const shell = processEnv.SHELL || processEnv.COMSPEC || 'unknown'
 
   return {
     platform,
-    shell: path.basename(shell),
+    shell: 'bash',
     nodeVersion: process.version,
     arch: process.arch,
     homedir: os.homedir(),
     cpus: os.cpus().length,
+    chromeAvailable: findChromeExecutable() !== null,
   }
 }

packages/agent-runtime/src/__tests__/main-prompt.test.ts

@@ -194,6 +194,7 @@ describe('mainPrompt', () => {
       arch: 'test',
       homedir: '/home/test',
       cpus: 1,
+      chromeAvailable: false,
     },
   }
 

packages/agent-runtime/src/__tests__/prompt-caching-subagents.test.ts

@@ -36,6 +36,7 @@ const mockFileContext: ProjectFileContext = {
     arch: 'test',
     homedir: '/home/test',
     cpus: 1,
+    chromeAvailable: false,
   },
 }
 

packages/agent-runtime/src/__tests__/run-agent-step-tools.test.ts

@@ -152,6 +152,7 @@ describe('runAgentStep - set_output tool', () => {
       arch: 'test',
       homedir: '/home/test',
       cpus: 1,
+      chromeAvailable: false,
     },
     agentTemplates: {},
     customToolDefinitions: {},

packages/agent-runtime/src/__tests__/test-utils.ts

@@ -69,5 +69,6 @@ export const mockFileContext: ProjectFileContext = {
     arch: 'test',
     homedir: '/home/test',
     cpus: 1,
+    chromeAvailable: false,
   },
 }