Card Transaction Event

Notifies your system whenever any transaction event occurs on a card, including:

• Transaction creation
• Transaction confirmation
• Transaction clearing
• Transaction status change

The payload structure is identical to the response of Retrieve Card Transaction Details.

---

Headers

Header	Value
api-notification-sign	SHA-512 signature of the request body
Content-Type	application/json

---

Payload example

{
  "id": "9f283e59-21ec-4c74-ae32-156d49cd9cf2",
  "cardUuid": "019cd7a9-8482-708a-addc-63885bd9403c",
  "accountUuid": "019d2236-2511-728e-96de-27fca03a9c48",
  "amount": "50.00",
  "currency": "USD",
  "type": "purchase",
  "status": "completed",
  "merchantName": "Amazon",
  "merchantCategory": "5411",
  "createdAt": "2026-03-25T10:30:00+00:00",
  "updatedAt": "2026-03-25T10:31:00+00:00"
}

Fields may include feeAmount, settlementAmount, settlementCurrency and other provider-specific fields — the full set matches the detail endpoint response.

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Respond with 2xx

Your endpoint must return an HTTP 2xx response. Failed deliveries are logged and visible in Webhook Event Log.