`payment.refunded`

A previous payment was refunded in part or in full.

Payload

Every delivery uses the same outer envelope (event, eventId, apiVersion, timestamp, data). Dedupe on eventId — it stays stable across retries and replays, while the X-Repull-Delivery-Id header changes on every attempt.

{
  "event": "payment.refunded",
  "eventId": "3f1c9a2e-8b7d-4c6a-9e0f-1a2b3c4d5e6f",
  "apiVersion": "2026-04",
  "timestamp": "2026-05-01T12:34:56.000Z",
  "data": {
    "object": {
      "id": "278044",
      "customerId": "1",
      "transactionType": "adjustment",
      "sourceType": "Resolution Adjustment",
      "status": "completed",
      "amount": "-215.40",
      "currency": "GBP",
      "reservationId": "215906",
      "confirmationCode": "HMEXAMPLE1",
      "listingId": "5668",
      "platform": "airbnb",
      "platformPaymentId": "RA-8832KDL"
    },
    "refundedAt": "2026-09-21T11:04:00.000Z",
    "reason": "Resolution centre adjustment",
    "revision": "2026-09-21T11:04:12.000Z"
  }
}

Verifying signatures

Every delivery includes a timestamped X-Repull-Signature header of the form t=<unix_ts>,v1=<hex>, where v1 is HMAC-SHA256(signing_secret, `${t}.${raw_body}`). Verify it before processing — see Verify Signatures for full Node.js and Python examples.

Use the raw body

Sign the raw request body exactly as received, not a re-stringified JSON object. Re-serialisation can reorder keys or change whitespace and break the signature.

Tip: Acknowledge with a 2xx status within 10 seconds. Failed deliveries are retried up to 5 times with exponential backoff.Webhook reliability →