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What persists and what does not ​

Each session has its own disk. It lives as long as the session does.

Kept until you delete the session ​

  • The browser profile: cookies and logins, history, bookmarks, saved settings.
  • Open tabs. Chromium reopens them when it starts.
  • Downloads, and files you sent through the Files box.
  • Agent memory: what an agent wrote under /data/memory/.
  • Artifacts the agent stored.
  • The name and the MCP URL. Renaming a session does not change its URL.

These survive sleep, stop and resume.

Kept across sleep, when the snapshot is restored ​

  • The exact state of the screen and of each page: form input, scroll position, a half-finished flow.

See Sleep and wake for when this does not apply.

Not kept ​

  • Page state after a stop, or after a wake without a snapshot. Tabs are reloaded from their addresses.
  • Variables in run_js. Every call starts fresh. An agent that needs to remember something writes it to /data/memory/.
  • The clipboard box. Its text is in your browser tab only.
  • Anything, after delete. Deleting a session removes its disk. It cannot be undone.

Logins that expire anyway ​

A site can end a login on its own side: after some days, or when it sees a new location. The session keeps the cookie, but the site may ask you to sign in again. Do that in the live view.