Claude in Chrome extension not connecting to Claude Code

Description

The Claude in Chrome browser extension is installed and enabled, but tabs_context_mcp consistently returns "Browser extension is not connected."

Environment

• Claude Code version: 2.1.74
• OS: macOS Darwin 24.6.0
• Chrome extension: Installed and enabled
• Native host process: Running (chrome-native-host connected to extension ID fcoeoabgfenejglbffodgkkbkcdhcgfn)

Steps to reproduce

1. Install Claude in Chrome extension
2. Ensure extension is enabled in chrome://extensions/
3. Start Claude Code session
4. Run tabs_context_mcp with createIfEmpty: true
5. Returns "Browser extension is not connected" every time

What I've tried

• Restarting Chrome
• Verifying extension is enabled
• Confirming native host process is running
• Logging into claude.ai in Chrome