Claude In Chrome Troubleshooting
Diagnose and fix Claude in Chrome MCP extension connectivity issues
- Type
- Plugin
- Repository
- trailofbits/skills
- GitHub stars
- 7.3k
- License
- CC-BY-SA-4.0
- Repo last updated
- Sep 25, 2026
- Version
- 1.1.4
- Author
- Dan Guido
What Claude In Chrome Troubleshooting is
Claude In Chrome Troubleshooting is a plugin published in the trailofbits/skills repository on GitHub, which has about 7.3k stars. The repository describes itself as: “Trail of Bits Claude Code skills for security research, vulnerability detection, and audit workflows”
A plugin is a package that bundles skills, slash commands, subagents, hooks, and MCP connectors so they install together. Plugins are plain files with a manifest at .claude-plugin/plugin.json, and they work in both Claude Code and Claude Cowork.
Installing Claude In Chrome Troubleshooting adds everything it ships in one step. Connectors inside a plugin still need to be connected separately, and hooks and subagents only run in Cowork and Claude Code, not in regular chat.
How to install Claude In Chrome Troubleshooting
Claude Code
- Add the repository as a plugin marketplace: claude plugin marketplace add trailofbits/skills
- Install the plugin: claude plugin install claude-in-chrome-troubleshooting@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json.
- Restart the session if the new skills or commands don't appear straight away.
Claude Cowork
- Open Customize → Plugins and choose Add marketplace.
- Enter trailofbits/skills (the owner/repo shorthand works for GitHub).
- Find Claude In Chrome Troubleshooting in the list, click Install, then connect any connectors it needs from its Connectors tab.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
An excerpt from plugins/claude-in-chrome-troubleshooting/.claude-plugin/plugin.json, shared under the repository's CC-BY-SA-4.0 license. Read the full file on GitHub.
Diagnose and fix Claude in Chrome MCP extension connectivity issues.
Original Author: @jeffzwang from @ExaAILabs Enhanced by: Trail of Bits
When to Use
- mcpclaude-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-troubleshootingThe plugin ships one skill, chrome-mcp-troubleshooting. It triggers on its own when the symptoms above appear; invoke it directly with /claude-in-chrome-troubleshooting:chrome-mcp-troubleshooting.
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Claude In Chrome Troubleshooting?
Claude In Chrome Troubleshooting is a plugin for Claude Code and Claude Cowork from the trailofbits/skills repository on GitHub. Diagnose and fix Claude in Chrome MCP extension connectivity issues
How do I install Claude In Chrome Troubleshooting in Claude Code?
Add the repository as a plugin marketplace: claude plugin marketplace add trailofbits/skills Install the plugin: claude plugin install claude-in-chrome-troubleshooting@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json. Restart the session if the new skills or commands don't appear straight away.
Can I use Claude In Chrome Troubleshooting in Claude Cowork?
Open Customize → Plugins and choose Add marketplace. Enter trailofbits/skills (the owner/repo shorthand works for GitHub). Find Claude In Chrome Troubleshooting in the list, click Install, then connect any connectors it needs from its Connectors tab.
Is Claude In Chrome Troubleshooting safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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