Callbacks
Call Payment Progress
This webhook uses Telnyx headers (telnyx-timestamp, telnyx-signature-ed25519) that are compatible with Standard Webhooks specification for SDK generation. Custom validation logic can map these to standard webhook-timestamp and webhook-signature equivalents. See https://github.com/standard-webhooks/standard-webhooks for details.
postWebhookcallPaymentProgress
Headers
telnyx-timestampinteger required
Unix timestamp for replay attack prevention
Unix timestamp (seconds since epoch) of when the webhook was sent - compatible with webhook-timestamp
telnyx-signature-ed25519string required
Ed25519 signature of timestamp|payload for verification
Base64 encoded Ed25519 signature for webhook verification - compatible with webhook-signature
Payload
Example payload
{
"data": {
"event_type": "call.payment.progress",
"id": "0ccc7b54-4df3-4bca-a65a-3da1ecc777f0",
"occurred_at": "2026-07-27T07:00:00.000000Z",
"payload": {
"attempt": 1,
"call_control_id": "v3:MdI91X4lWFEs7IgbBEOT9M4AigoY08M0WWZFISt1Yw2axZ_IiE4pqg",
"call_leg_id": "428c31b6-7af4-4bcb-b7f5-5013ef9657c1",
"call_session_id": "428c31b6-abf3-3bc1-b7f4-5013ef9657c1",
"connection_id": "7267xxxxxxxxxxxxxx",
"from": "+353****5860",
"payment_card_number": "xxxxxxxxxxxx1111",
"payment_card_type": "visa",
"payment_connector": "Default",
"payment_method": "credit-card",
"payment_status": "completed",
"payment_step": "payment-card-number",
"to": "+131****7420"
},
"record_type": "event"
}
}Response
The server must return an HTTP 200, otherwise we will reattempt delivery at the failover webhook URL.