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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.120

Chrome Extension: tabs_close_mcp Tool

What

A new MCP tool that lets Claude close individual tabs in the Chrome tab group by ID.

Details
  • Only tabs in the current session's tab group are closable
  • Call tabs_context_mcp first to get valid tab IDs
  • If you close the group's last tab, Chrome auto-removes the group — the next tabs_context_mcp with createIfEmpty starts fresh
  • Replaces the previous update_plan tool that was used in the Chrome extension's plan-approval flow
Evidence

Tool registered as "tabs_close_mcp" with title "Tabs Close" — search for "tabs_close_mcp"

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.120 →