latestOpenAPI 3.1.02026-08-185681822.2 MB

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Webhook Events

Call ended event

Fired on call hangup with the duration and a zero-markup billing breakdown (Meta cost, Telnyx cost, recording surcharge, total). Costs are pass-through; no margin is applied.

postWebhookcall.ended

Payload

idstring required

event'call.ended' required

timestampstring date-time required

UTC time at which Zernio generated this event (set once when the event payload is built, before delivery is queued). Retries and redeliveries keep the original value, so it reflects the event, not the delivery attempt.

Response

Webhook received successfully