Success.

Bad request. Most common: called with a non-live key (Agent action endpoints require live mode tokens only.). Others: body validation errors (errors is an object, e.g. {"action": ["\"approve_now\" is not a valid choice."]}); outcome_id is required to <action>. Use the underwriting summary to list the available <action> outcomes.; Outcome "<name>" is a <kind> outcome and cannot be used to <action>.; a message from the step's end-of-decision providers on decline (or Could not run final providers); a DealerTrack message on request_docs (or DealerTrack document request failed); a message from the flow continuation on approve; Something went wrong. when withdrawn emails fail.

The Bearer key is not an active API key. The response has an empty body (no JSON is returned; the example shows null to stand for that).

Forbidden. Most common: Arc AI is not enabled for the tenant (feature_disabled_error, Arc AI is not enabled for this tenant.). Also returned when the Authorization header is missing or does not start with Bearer ({"detail": "Unauthorized Request."}), and when the application exists but belongs to another tenant (permission_denied_error, Permission denied).

Invalid application ID when no application has this app_id, or Outcome not found when outcome_id is not one of your outcomes.

Rate limit exceeded: more than 300 requests in a rolling 60-second window for the tenant.