Chrome extension MCP becomes unresponsive after prolonged use, requires multiple reconnects
Resolved 💬 3 comments Opened Feb 18, 2026 by Bwsusa Closed Feb 22, 2026
Description
The Chrome extension MCP (claude-in-chrome) becomes unresponsive after prolonged use or many tool calls within a session. Once it enters this state, reconnecting via /chrome is unreliable — Chrome launches and immediately closes, or the extension reports as connected in the MCP server status but tabs_context_mcp returns "No Chrome extension connected" or "Browser extension is not connected."
Steps to Reproduce
- Start a Claude Code session with the Chrome extension MCP configured
- Use browser automation tools (
tabs_context_mcp,navigate,javascript_tool, etc.) extensively over the course of a session (20+ tool calls) - At some point, tool calls begin returning "Browser extension is not connected" errors
- Running
/chrometo reconnect shows the MCP as enabled/connected, but tool calls still fail - Chrome may launch and immediately close on reconnect attempts
- Eventually after multiple
/chromereconnects and/or restarting the Claude Code session, the connection re-establishes
Expected Behavior
The Chrome extension should maintain a stable connection throughout a session, or reconnect reliably when /chrome is run.
Actual Behavior
- Extension becomes unresponsive after extended use
/chromereports successful reconnection but tools still fail- Chrome launches then immediately closes on some reconnect attempts
- Requires multiple reconnect attempts and sometimes a full session restart to recover
Environment
- OS: Ubuntu Linux 6.17.0-14-generic
- Claude Code: Latest
- Chrome: Latest stable
Workaround
Falling back to Playwright MCP works but loses the key benefit of Chrome extension — persistent sessions with existing logins and cookies.
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