Claude in Chrome Troubleshooting

Diagnose and fix Claude in Chrome MCP extension connectivity issues.

Original Author: @jeffzwang from @ExaAILabs Enhanced by: Trail of Bits

When to Use

• mcp__claude-in-chrome__* tools fail with "Browser extension is not connected"
• Browser automation works erratically or times out
• After updating Claude Code or Claude.app
• When switching between Claude Code CLI and Claude.app (Cowork)

What It Does

• Explains the Claude.app vs Claude Code native host conflict
• Provides toggle script to switch between the two
• Quick diagnosis commands
• Full reset procedure
• Covers edge cases (multiple profiles, stale wrappers, TMPDIR issues)

Installation

/plugin install trailofbits/skills/plugins/claude-in-chrome-troubleshooting

License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.