Cancel an intent

Full intent state after cancellation. Repeating the request for an already-cancelled intent returns the same successful projection. Cancellation is only available before execution starts and cannot stop or reverse work already executing.

Intent missing or not owned by the authenticated agent (intent_not_found)

Intent is not eligible for cancellation (intent_not_cancellable)

Resolved source account, pinned when the intent was created. Omitted for actions without an account.

Exact terminal outcome, or null while the intent is nonterminal. Known values are completed, blocked, denied, expired, failed, and cancelled; clients must preserve future nonblank strings.