OptionaladminShared admin API key sent as x-api-key.
One donation or a batch. Sent verbatim as the request body — the service fans a batch out into individual synthetic events.
OptionalsignalCancel on React unmount / other lifecycle events.
OptionaltiltifyTiltify OAuth token sent as Authorization: OAuth <token>. Grants
access only to campaigns the resolved Tiltify user owns.
Params for postTiltifyTestDonations.