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

# Machine detection async callback API

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

When the Infobip platform finishes machine detection requested by a MachineDetection 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 detection result.

## Payload

- 60d0e6d5cbcf8382b5a6bad1f38781f71991c7ea63dad2e6ec22ddc8893af51cMachineDetectionCallbackRequest: Markup Language machine detection callback request object. Sent to the callback URL configured on the Markup Language configuration (markupUrl) once machine detection has completed. Extends the instructions callback payload with the machine detection result and confidence ratings.
  - `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.
  - `confidenceRating` object: Confidence rating for the machine detection result.

## 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)