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WEBHOOK
card.3ds_otp
{
  "event": "card.3ds_otp",
  "version": "2.0",
  "sign": "3a5b8c2d1e4f9a0b7c6d5e4f3a2b1c0d",
  "data": {
    "cardId": "CRD678A3B4C5D6E7",
    "cardholderId": "ch_abc123xyz",
    "last4": "4532",
    "code": "719384",
    "reference": "TXN550e8400e29b41d4",
    "amount": "49.99",
    "currency": "USD",
    "merchant": "AMAZON *MARKETPLACE",
    "appId": "D0H6R7Z6R1C2N5O5",
    "timestamp": "2026-01-12T18:30:00+00:00"
  }
}

{}

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{
  "event": "card.3ds_otp",
  "version": "2.0",
  "sign": "3a5b8c2d1e4f9a0b7c6d5e4f3a2b1c0d",
  "data": {
    "cardId": "CRD678A3B4C5D6E7",
    "cardholderId": "ch_abc123xyz",
    "last4": "4532",
    "code": "719384",
    "reference": "TXN550e8400e29b41d4",
    "amount": "49.99",
    "currency": "USD",
    "merchant": "AMAZON *MARKETPLACE",
    "appId": "D0H6R7Z6R1C2N5O5",
    "timestamp": "2026-01-12T18:30:00+00:00"
  }
}

{}

Body

application/json
​
event
string

The event type identifier (e.g. card.funded).

​
version
string

Webhook payload version.

​
sign
string

HMAC-SHA256 signature of the data object using your webhook secret. Always verify this before processing.

​
data
object

Response

200

Acknowledge receipt of the event