Anthropic merged the Claude browser extension's side panel into the same Claude Cowork session used in its desktop, web and mobile apps, so conversations, saved instructions and connected tools now carry across all of them. The extension can read pages and click, type and fill forms using existing logins, which lets it work in internal dashboards and vendor portals. It is limited to Chrome, and hidden instructions planted in web pages remain a risk that Anthropic says its added action checks reduce but cannot remove.
What changed
A session in the Chrome side panel was separate from the Claude apps, so conversations and context did not carry between them.
What it unlocks
Starting a browser task that reads pages and fills forms across tabs, then continuing the same session later in the desktop, web or mobile app.
- available on Max and Team plans today
- rolling out to Pro users over the coming weeks
What you need to act on it
- Max or Team plan (Pro rolling out later)
- Chrome browser with the Claude extension installed
- on Enterprise plans an admin must switch it on and may restrict it to approved domains
- claude.com2026-08-12