[Bug] tabs_context_mcp browser extension connection fails until Chrome restart within session
Resolved 💬 3 comments Opened Dec 27, 2025 by schroneko Closed Dec 31, 2025
Bug Description
tabs_context_mcp always fails with "Browser extension is not connected" regardless of launch order. Connection only succeeds after restarting Chrome from within an active Claude Code session.
Tested scenarios (all fail):
- Chrome running → Start Claude Code
- Quit Chrome → Start Claude Code → Launch Chrome
- Start Claude Code → Call tabs_context_mcp (to start MCP server) → Launch Chrome
Workaround (not a fix):
Restart Chrome via osascript from within the session. This must be done every session.
Environment: macOS 15.2, Claude Code 2.0.76, Extension 1.0.36
Environment Info
- Platform: darwin
- Terminal: ghostty
- Version: 2.0.76
- Feedback ID: af0e54a4-f494-48df-af1b-5be9f12ad66d
Errors
[{"error":"Error: Tool mcp__claude-in-chrome__tabs_context_mcp not found\n at WwB (/$bunfs/root/claude:2541:6724)\n at L4 (/$bunfs/root/claude:202:20697)\n at wq (/$bunfs/root/claude:202:39069)\n at DTT (/$bunfs/root/claude:202:49684)\n at J6 (/$bunfs/root/claude:202:85872)\n at Vv (/$bunfs/root/claude:202:84850)\n at mf (/$bunfs/root/claude:202:84675)\n at Hk (/$bunfs/root/claude:202:81115)\n at lA (/$bunfs/root/claude:202:6242)\n at qoR (/$bunfs/root/claude:195:4072)","timestamp":"2025-12-27T18:49:21.580Z"},{"error":"Error: Tool mcp__claude-in-chrome__tabs_context_mcp not found\n at WwB (/$bunfs/root/claude:2541:6724)\n at L4 (/$bunfs/root/claude:202:20697)\n at wq (/$bunfs/root/claude:202:39069)\n at DTT (/$bunfs/root/claude:202:49684)\n at J6 (/$bunfs/root/claude:202:85872)\n at Vv (/$bunfs/root/claude:202:84850)\n at mf (/$bunfs/root/claude:202:84675)\n at Hk (/$bunfs/root/claude:202:81115)\n at lA (/$bunfs/root/claude:202:6242)\n at qoR (/$bunfs/root/claude:195:4072)","timestamp":"2025-12-27T18:49:21.588Z"},{"error":"Error: Tool mcp__claude-in-chrome__navigate not found\n at WwB (/$bunfs/root/claude:2541:6724)\n at L4 (/$bunfs/root/claude:202:20697)\n at wq (/$bunfs/root/claude:202:39069)\n at DTT (/$bunfs/root/claude:202:49684)\n at J6 (/$bunfs/root/claude:202:85872)\n at Vv (/$bunfs/root/claude:202:84850)\n at mf (/$bunfs/root/claude:202:84675)\n at Hk (/$bunfs/root/claude:202:81115)\n at lA (/$bunfs/root/claude:202:6242)\n at qoR (/$bunfs/root/claude:195:4072)","timestamp":"2025-12-27T18:49:21.588Z"},{"error":"Error: Tool mcp__claude-in-chrome__computer not found\n at WwB (/$bunfs/root/claude:2541:6724)\n at L4 (/$bunfs/root/claude:202:20697)\n at wq (/$bunfs/root/claude:202:39069)\n at DTT (/$bunfs/root/claude:202:49684)\n at J6 (/$bunfs/root/claude:202:85872)\n at Vv (/$bunfs/root/claude:202:84850)\n at mf (/$bunfs/root/claude:202:84675)\n at Hk (/$bunfs/root/claude:202:81115)\n at lA (/$bunfs/root/claude:202:6242)\n at qoR (/$bunfs/root/claude:195:4072)","timestamp":"2025-12-27T18:49:21.588Z"}]This issue has 3 comments on GitHub. Read the full discussion on GitHub ↗