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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 v2.1.38 10 Feb 2026

Browser Switching for Chrome Automation

What

Switch between multiple Chrome browsers when using Claude's browser automation features.

Usage: Invoke the switch_browser tool when you want to connect to a different Chrome instance.

Details

Broadcasts a connection request to all Chrome browsers with the Claude extension installed
User clicks 'Connect' in the desired browser to switch
Only available with bridge connections (shows error otherwise)
Useful for multi-browser development/testing workflows

Evidence

Tool definition (search for "Switch which Chrome browser is used for browser automation")

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

See this entry in the whole of v2.1.38 →