Event signature
Each attempt includes a signature derived from the displayed event. Verify the signature before processing the body.
Retry schedule
Failed Test Mode attempts expose their response code, scheduled retry, and final delivery state. No connector animation runs without a displayed event.
Manual replay
Manual replay requires an operator reason and creates a new attempt linked through replayOf.
Idempotent consumers
Use event ID and sequence to prevent duplicate side effects. Preserve the original event timestamp and lifecycle context.