Anthropic adds a Chrome sidebar for Claude Cowork

First recorded July 7, 2026 · Latest coverage August 12, 2026 · Developing over 37 days · 2 sources

Materially updated August 12, 2026

Anthropic has added a Chrome browser extension that lets users run Claude Cowork in a sidebar while they browse the web. The update expands access to Anthropic's agent product beyond its earlier smartphone rollout and gives users a persistent in-browser surface for ongoing conversations and task management.

Why it matters: Persistent access points are becoming a key differentiator for AI agents. Putting Claude Cowork directly into the browser could make it more useful during everyday web workflows and signals Anthropic's push to make its agent available across more control surfaces, not just standalone desktop or mobile contexts.

What changed

1. August 12, 2026 · Material development · Engadget
   Claude Cowork can now run in a Chrome sidebar
2. July 7, 2026 · First report · Wired
   Shut Those Laptops! Anthropic Puts Its Claude Cowork Agent on Your Phone

Sources

• Claude Cowork can now run in a Chrome sidebar Engadget · August 12, 2026
• Shut Those Laptops! Anthropic Puts Its Claude Cowork Agent on Your Phone Wired · July 7, 2026