Cloudflare adds persistent browser with session memory to Agents SDK

On October 13, 2026, Cloudflare shipped a persistent browser tool in its Agents SDK: an agent keeps tabs, cookies and logins across turns while the browser session stays alive. The default idle timeout is 10 minutes, after which a fresh browser is created with restarted: true. Each conversation gets its own active tab, while cookies and logins are shared within the browser.

• The tool preserves tabs, cookies and logins across agent turns
• Default idle timeout is 10 minutes, then the browser is recreated
• On restart the tool reports restarted: true and lists lost sessions
• Each conversation gets its own active tab, cookies and logins are shared