Claude in Chrome: MCP tab groups persist and multiply across sessions

Description

When using Claude Code with the Claude in Chrome browser extension, each new session creates a new tab group called "Claude (MCP)". These tab groups persist after the session ends and accumulate over time, cluttering the browser.

Steps to Reproduce

1. Start a new Claude Code session
2. Use any browser automation tool (e.g., tabs_context_mcp with createIfEmpty: true)
3. A new "Claude (MCP)" tab group is created
4. End the session or start a new one
5. The tab group remains in Chrome
6. Repeat - each new session creates another "Claude (MCP)" group

Expected Behavior

• Tab groups should be automatically cleaned up when the Claude Code session ends
• Or at minimum, empty tab groups should be removed automatically
• Alternatively, new sessions could reuse existing "Claude (MCP)" tab groups instead of creating new ones

Current Behavior

Multiple "Claude (MCP)" tab groups accumulate in Chrome, requiring manual cleanup by right-clicking and selecting "Close group".

Environment

• macOS Darwin 25.3.0
• Claude Code with Claude in Chrome extension
• Google Chrome

Suggested Solutions

1. Auto-cleanup on session end: Remove the tab group when Claude Code disconnects
2. Reuse existing groups: Check for existing "Claude (MCP)" groups before creating new ones
3. Cleanup empty groups: Periodically remove tab groups with no tabs

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🤖 Generated with Claude Code