Undo Ledger ensures multi-step agents can fully reverse changes upon cancellation

A company's automated onboarding agent proceeded with initial steps, such as creating accounts and ordering hardware, before a job offer was rescinded. When the process was cancelled, the agent halted but could not reverse the actions already completed, leading to unintended active accounts and billed licenses. To solve this, the agent framework was redesigned to include an Undo Ledger, which logs a reversal step for every action before it is executed. This allows any cancellation or failure to automatically trigger a rollback of completed steps in reverse order. The result ensures cancelled processes leave systems in their original state, with any irreversible actions flagged for manual resolution.