First Leeward

Webhook event

Card Transaction Created

POSTCARD_TRANSACTION_CREATED

Fired when a new card transaction is created (e.g., authorization, purchase).

Body

application/json

idstringrequired

Unique event identifier for idempotency

typestringrequired

Webhook event type

Available options:CARD_TRANSACTION_CREATED
dataobjectrequired
Show child attributes
triggerEventIdstring<uuid> | nullrequired

ID of the event in events that triggered this webhook, or null when the transaction changed for a reason other than a new lifecycle event. When set, resolve it against events for the event type and amounts.

Response

200Webhook received successfully. Return any 2xx status to acknowledge.