Update README.md

[karolklp]

Hi 👋

When I first tried setting up chrome-devtools-mcp, I was confused because nothing seemed to happen after running the MCP server. I expected a Chrome window to open automatically, but actually you need to ask your agent to open a new browser window.

This PR adds a short note in the README to clarify this behavior.

[sebastianbenz]

Thanks for flagging this! This should happen automatically indeed. Have you got a sample prompt where this didn't work?

[karolklp]

Claude Code

> /mcp 
  ⎿  Reconnected to chrome-devtools.

> can you connect with chrome devtools

⏺ I'll check what Chrome DevTools capabilities are available.
  ⎿  # list_pages response    
     ## Pages
     0: about:blank [selected]

⏺ Yes, I can interact with Chrome DevTools. The MCP Chrome DevTools server is connected and provides these capabilities:

  Page Navigation & Management:
  - Navigate to URLs
  - List/select/close pages
  - Navigate page history
  - Take snapshots and screenshots

  Interaction:
  - Click, drag, hover elements
  - Fill forms and inputs
  - Upload files
  - Handle dialogs

  Monitoring:
  - List console messages
  - Track network requests
  - Performance tracing

  Testing:
  - Emulate CPU throttling
  - Emulate network conditions
  - Execute JavaScript

  Currently there's one blank page open. Would you like me to navigate somewhere or perform any specific browser automation task?

so only after asking question it opened.

[sebastianbenz]

Ah OK, so that's actually working as intended. The browser will open automatically if you use one of the existing tools. For example: list console messages on https://example.com will automatically open the browser.

[karolklp]

OK! So that short info in readme makes sense, since it's not obvious. Some MCPs like Serena are opening new browser tab on startup.

[sebastianbenz]

You're absolutely right! I've created a PR to update the README to make this more clear (technically the browser is started automatically, but at a different point in time): #89

Does that address your problem?

[sebastianbenz]

Closing in favor of #89

Thanks for adding this @karolklp !

[karolklp]

great, thx, @sebastianbenz!