In brief: Anthropic is merging the Chrome extension with Claude Cowork, allowing browser sessions to continue seamlessly across desktop, web and mobile apps, initially available for Max and Team plans.
Anthropic is integrating the “Claude in Chrome” browser extension into Claude Cowork: sessions in the side panel are now synchronized with the desktop, web and mobile app. The feature is available immediately for Max and Team plans, with Pro users to follow in the coming weeks.
The Claude in Chrome side panel now runs as a regular Claude Cowork session. Conversations are saved in the chat history, Skills and Connectors also work in the browser, and a task started in a browser tab can be continued in the desktop, web or mobile app. Previously, the panel session was isolated from the other Claude interfaces, and context and history were lost when switching. Since sessions are now tied to the account rather than the device, a task can be started in the browser and later continued on a different endpoint.
Claude in Chrome is a browser extension that allows Claude to see the currently open page and act on it: clicking links, entering text, navigating between pages, and filling out forms, using the user’s existing logins. This also makes it possible to integrate systems that are not directly connected to Claude, such as internal dashboards, legacy systems, or vendor portals. Anthropic cites as an example compiling a budget spreadsheet from multiple vendor portals: Claude opens the relevant tabs, reads out invoice amounts and data, and builds a spreadsheet from them, which can then be supplemented with local files in the desktop app.
For practitioners, the security aspect is central, since browser agents are fundamentally susceptible to prompt injection: malicious instructions can be hidden in web pages, emails, or documents and can trick Claude into unintended actions without the user seeing them. Since the pilot phase, Anthropic has added an additional verification step: with automatic approval enabled, Claude works through tasks without asking for confirmation at every step, but before consequential actions such as submitting a form, sending a message, or downloading a file, a separate mechanism checks whether the action matches the original request and blocks deviations. For irreversible or cost-incurring actions such as purchases or the disclosure of personal data, Claude continues to explicitly ask for confirmation. Anthropic emphasizes that these measures significantly reduce but cannot eliminate the risk, and recommends initially only working on trusted websites.
To get started, the extension is installed from the Chrome Web Store, followed by logging in and opening the side panel. On Enterprise plans, Claude in Chrome is disabled by default; admins can enable the feature and restrict it to approved domains. For work with local files or other applications on one’s own computer, the Claude desktop app is still required, since Claude in Chrome currently does not run on other Chromium-based browsers or on mobile.
Source: claude.com · Published August 11, 2026
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