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Anthropic Turns Claude’s Chrome Side Panel Into Persistent Cowork Session

Designed to let Claude act on logged‑in websites using account tools, the update raises new safety and admin questions.

Overview

  • Anthropic announced the change on Wednesday and updated the Chrome extension so side‑panel conversations save to user history and resume across Claude desktop, web, and mobile apps.
  • Skills, which are markdown instructions that shape Claude’s behavior, and Connectors, which link Claude to external services via MCP, now work from the Chrome side panel without extra setup.
  • Claude in Chrome can see the current page and perform actions using a user’s existing browser logins, including clicking links, navigating pages, entering text, and filling forms, enabling multi‑step workflows like gathering invoices and building a spreadsheet.
  • The rollout is live for Max and Team subscribers with Pro arriving in the coming weeks, Enterprise installs off by default with admin domain restrictions available, and the extension does not yet support other Chromium browsers or mobile.
  • Anthropic added automated checks and user confirmations for consequential actions to reduce prompt‑injection and misuse risks but says those measures cannot eliminate the underlying vulnerabilities, raising questions about audit logs and enterprise governance.