Cancelling does not undo

Cancelling stops an agent taking any further action. It is checked between planning steps.

Tool calls already sent to your software have happened. We cannot recall a delete that your database has already performed, and showing "cancelled" beside three completed deletions would be worse than useless — so the execution page tells you how many calls had already run.

If you need something undone, undo it in the system it happened in. The execution trace shows exactly what was called and with what values.