Claude in Chrome

Claude in Chrome is a browser extension from Anthropic that lets Claude view the page you are on and act in it: reading and typing text, clicking links, navigating between pages and filling out forms, using your existing logins. It is aimed at tools that do not connect to Claude directly, such as internal dashboards, legacy systems and vendor portals.

It was first announced as a pilot in 2025 and became generally available on every paid Claude plan. Claude can now act autonomously without approval for each step. A classifier checks each action (for example navigating to a new site or entering text) against the user's original request and blocks mismatches. This uses the same mechanism as auto mode in Claude Code, and it can be switched off in settings in favour of manual approval. Probes also scan web content for prompt injection before Claude acts on it.

Anthropic reports that, with probes and the safety classifier, no attacks succeeded against Sonnet 5, Opus 5 or Mythos 5 in its current evaluation, and 0.3% succeeded against Fable 5. It says remaining breaks are low-severity, and that prompt injection remains an ongoing risk. It is installed from the Chrome Web Store. Enterprise admins can manage it in Organization Settings and limit it to approved domains. Limits: it does not run on other Chromium browsers or on mobile, and working with local files or other applications still requires the Claude desktop app. A YouTube reviewer described it as slow.