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claude-in-chrome-troubleshooting

Diagnose Claude MCP Chrome connection failures by disabling conflicting native messaging hosts.

Updated May 2, 2026
Search Tags:#troubleshooting#claude#mcp#macos#connectivity#native host#chrome-native-messaging
One-click install
npx skills add https://github.com/ayehiaa/my-travel-assistant --skill claude-in-chrome-troubleshooting-ayehiaa
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: claude-in-chrome-troubleshooting
Source: https://github.com/ayehiaa/my-travel-assistant/tree/main/.agents/skills/claude-in-chrome-troubleshooting
Command: npx skills add https://github.com/ayehiaa/my-travel-assistant --skill claude-in-chrome-troubleshooting-ayehiaa

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps you diagnose and resolve Claude in Chrome MCP extension failures, especially when tools fail to connect or behave erratically due to native host conflicts.

Core Features & Use Cases

  • Identify native host and socket mismatches: Determine whether Claude.app (Cowork) or Claude Code CLI native messaging is the active one and confirm the expected socket location.
  • Fix the most common root cause (host conflict): Prevent incompatible socket formats by disabling the native messaging config for the tool you are not using.
  • Recover reliably with a full reset flow: Restore a clean Claude Code CLI setup (wrapper, processes, sockets) and ensure Chrome and the MCP client reconnect correctly.
  • Use Cases: Use after updates, after switching between Claude.app and Claude Code CLI, or when the symptom persists as "Browser extension is not connected" despite seemingly running processes.

Quick Start

Disable the native messaging config for the Claude.app or Claude Code CLI host you are not using, then restart Chrome and your Claude Code session so the MCP connection re-initializes cleanly.

Frequently Asked Questions about claude-in-chrome-troubleshooting

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
Why does Claude in Chrome MCP say Browser extension is not connected?▼

Chrome MCP connectivity fails when incompatible native messaging hosts conflict, usually after switching between Claude.app Cowork and Claude Code CLI. Disabling the inactive host's Chrome NativeMessagingHosts JSON config resolves the conflict.

How do I fix MCP tool timeouts and erratic behavior in Chrome on macOS?▼

Fix MCP tool timeouts on macOS by verifying active native hosts and sockets, disabling the native messaging config for the tool you are not using, then restarting Chrome and your MCP client to re-initialize the connection cleanly.

How do I disable conflicting Chrome native messaging hosts for Claude?▼

Disable the native messaging config for either the Claude.app or Claude Code CLI host you are not actively using. This prevents incompatible socket formats from conflicting with the active MCP extension connection.

Does switching between Claude.app and Claude Code CLI break Chrome MCP connectivity?▼

Switching between Claude.app Cowork and Claude Code CLI breaks Chrome MCP connectivity because both register different native messaging hosts and socket formats. You must disable the config for the unused tool to restore the connection.

How do I reset Claude Code CLI native messaging when MCP tools fail to connect?▼

Reset Claude Code CLI native messaging by restoring the wrapper, processes, and sockets to a clean state. Ensure Chrome and the MCP client reconnect correctly by restarting both to guarantee startup-time connection correctness.

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