---
title: "Machine message detection callback API"
method: POST
path: "send-machine-message-detection-async-callback"
tags: ["channels", "voice", "calls-markup-language", "markup-language-instructions-async"]
---

# Machine message detection callback API

`POST send-machine-message-detection-async-callback` (webhook)

When the Infobip platform finishes machine message detection requested by a MachineMessageDetection instruction, it generates a request 
to the callback URL configured on Markup Language configuration (markupUrl) The request carries the call context together with the 
machine message detection result.

## Payload

- 60d0e6d5cbcf8382b5a6bad1f38781f71991c7ea63dad2e6ec22ddc8893af51cMachineMessageDetectionCallbackRequest: Markup Language machine message detection callback request object. Sent to the callback URL configured on the Markup Language configuration (markupUrl) once machine message detection has completed. Extends the instructions callback payload with the machine detection result.
  - `callId` string: Unique identifier of the call.
  - `from` string: The phone number of the caller in the [E.164](https://en.wikipedia.org/wiki/E.164) format.
  - `to` string: The phone number of the callee in the [E.164](https://en.wikipedia.org/wiki/E.164) format.
  - `direction` 'INBOUND' | 'OUTBOUND': The direction of the call. Possible values are: INBOUND, OUTBOUND.
  - `endpoint` 287f18f04e9f129a7bc94ed3ae48e2480e2673b8fdf041ab5125fde9674634b8CallbackEndpoint: Endpoint involved in the call delivered to the Markup Language callback.
    - `type` 'PHONE' | 'SIP' | 'WEBRTC' | 'VIBER' | 'WHATSAPP' | 'WEBSOCKET', required
  - `startTime` string, date-time: The timestamp when the call started, in ISO-8601 UTC format (yyyy-MM-dd'T'HH:mm:ss.SSSZ).
  - `machineDetectionResult` 'HUMAN' | 'MACHINE' | 'MACHINE_EOM_BEEP' | 'MACHINE_EOM_SILENCE' | 'MACHINE_EOM_TIMEOUT': The result of the machine detection process.

## Acknowledgement `200`

Your server returns this code if it accepts the callback.

---

[API](https://skmtc.dev/infobip/apis/infobip-openapi-specification.md) - [All operations](https://skmtc.dev/infobip/apis/infobip-openapi-specification/llms.txt) - [OpenAPI document](https://skmtc.dev/infobip/apis/infobip-openapi-specification/revisions/9dcbbaf902de?raw)