Anthropic's Claude in Chrome Now Runs Full Cowork Sessions Across Every Device
Claude in Chrome's side panel now runs a full Cowork session, syncing conversations, skills, and connectors across desktop, web, and mobile
- Session sync: Claude in Chrome's side panel now runs a full Cowork session, syncing conversations across desktop, web, and mobile.
- Availability: Live now for Max and Team plans; Pro rollout coming in the next few weeks.
- Skills and connectors carry over: Any skill or connector configured in Cowork is automatically available in the browser side panel with no extra setup.
- Browser agent use cases: Pulling dashboard metrics, organizing Drive files, logging CRM calls, and competitor research without copy-pasting.
- Prompt injection defenses: Dual classifiers plus RL-trained robustness reduce attack success rates to under 0.08% in internal testing, though risk is non-zero.
- Hard limits: Not for financial accounts, health records, legal docs, or HIPAA-covered orgs -- a separate browser profile is recommended for Claude work.
Claude in Chrome just got a meaningful upgrade: the browser extension's side panel now runs a full Claude Cowork session, the same one tied to your account across desktop, web, and mobile. That means conversations you start in a Chrome tab carry over to the desktop app or your phone without any manual handoff.
One session, every surface
The core change is deceptively simple. Previously, the Chrome extension was its own isolated context. Now, the side panel runs a full Claude Cowork session, and the skills, plugins, and connectors you've already built are there with nothing to set up in the browser.
Every conversation saves to your history. Sessions live with your account, not the machine, so you can start in Chrome and pick it up on desktop or mobile without needing to re-explain. This is the same cross-device model that Cowork introduced more broadly: sessions run in the cloud and are saved to your Claude account, so you can start a task at your desk and check status on your phone.
What Cowork actually is
If you haven't used it yet: Claude Cowork (short for "collaborative work") is Anthropic's persistent agent workspace. It's a place where chats, projects, and artifacts sit together and an agent can act across them rather than in a single throwaway conversation. Think of it as a long-running session where Claude has memory, tools, and context, rather than a fresh chat each time you open a tab.