The side panel in the Claude for Chrome extension is no longer a plain chat: it is a full Claude Cowork session. Claude sees the page you're on, clicks links, types text, navigates between pages and fills out forms — using your existing logins, with nothing to copy over. And crucially: your skills, your connectors and your history follow it into the browser.

Claude in Chrome is generally available on every paid plan (Pro, Max, Team, Enterprise). The big change: Claude chains actions without asking for approval at each step — a safety classifier validates every action before it runs, and a manual mode remains available in settings. Anthropic reports a 0% success rate for prompt-injection attacks on Sonnet 5 and Opus 5 with all protections on; Enterprise admins can restrict the extension to an approved list of domains. Chrome only, no mobile version.

The real leap isn't reading your tabs — the extension already did that. It's continuity: a task started in a tab finishes on the desktop or on your phone, because the session belongs to your account and not to one device. See Module 05 — Cowork.