generated: '2026-07-25'
method: searched
source: https://momodeveloper.mtn.com/api-documentation/callback plus openapi/ TM Forum hub+listener and 3PP notification
  operations
spec_type: null
asyncapi_published: false
note: 'MTN publishes no AsyncAPI document. It does run three genuine event surfaces: MoMo transaction callbacks,
  the TM Forum hub/listener registration pattern on several MADAPI products, and a 3PP notification registration
  API. Catalogued here as a webhook/event surface.'
surfaces:
- name: MoMo transaction callbacks
  style: http callback
  docs: https://momodeveloper.mtn.com/api-documentation/callback
  registration: sandbox — set providerCallbackHost when creating the API user; production — register the callback
    host in the Accounts Portal when creating API keys
  per_request_header: X-Callback-Url (must be on the registered domain)
  transport: HTTPS only; the listener must accept POST and PUT
  delivery: exactly once, NO retry — MTN recommends polling the status GET as the fallback
  payload: same shape as the status-check response for the operation
  tls: the partner callback certificate chain must come from an MTN-approved intermediate CA (Amazon, Certum, COMODO,
    DigiCert and others are pre-loaded in the OpenAPI Partner Gateway tls_keystore)
  events:
  - name: requesttopay.result
    trigger: a Collection request-to-pay reaches a final state
    status_values:
    - PENDING
    - SUCCESSFUL
    - FAILED
  - name: requesttowithdraw.result
    trigger: a Collection request-to-withdraw reaches a final state
  - name: transfer.result
    trigger: a Disbursement or Remittance transfer reaches a final state
  - name: deposit.result
    trigger: a Disbursement deposit reaches a final state
  - name: refund.result
    trigger: a Disbursement refund reaches a final state
- name: TM Forum hub / listener
  style: TMF register-listener pattern
  registration_operations:
  - registerListener (POST /hub)
  - unregisterListener (DELETE /hub/{id})
  apis:
  - api: MTN TMF688 Event Management
    spec: openapi/mtn-group-tmf688-event-management.yml
    events:
    - listenToTopicCreateEvent
    - listenToTopicChangeEvent
    - listenToTopicDeleteEvent
    extra:
    - listHub
    - createHub
    - retrieveHub
    - deleteHub scoped to /topic/{topicId}/hub
  - api: MTN Service Activation and Configuration
    spec: openapi/mtn-group-service-activation-and-configuration.yml
    events:
    - listenToServiceCreateEvent
    - listenToServiceAttributeValueChangeEvent
    - listenToServiceStateChangeEvent
    - listenToServiceDeleteEvent
    - listenToMonitorCreateEvent
    - listenToMonitorAttributeValueChangeEvent
    - listenToMonitorStateChangeEvent
    - listenToMonitorDeleteEvent
  - api: MTN TMF Resource Inventory Management - TMF639
    spec: openapi/mtn-group-tmf-resourceinventorymanagement-tmf639.yml
    events:
    - listenToResourceCreateEvent
    - listenToResourceAttributeValueChangeEvent
    - listenToResourceStateChangeEvent
    - listenToResourceDeleteEvent
  - api: MTN TMF Customer Bill Management - TMF678
    spec: openapi/mtn-group-tmf-customer-bill-management.yml
    events: []
    note: hub registration only; no listener operations declared
- name: 3PP notification registration
  style: provider-push notification
  apis:
  - api: MTN Notification v2
    spec: openapi/mtn-group-notification-v2.yml
    operations:
    - register3PPNotificationDetailsUsingPOST
    - get3PPNotificationDetailsByIdUsingGET
    - delete3PPNotificationDetailsByIDUsingDELETE
    - notification3PPByIdUsingPOST
    - notification3PPByNameAndCodeAndnotificonTypeUsingPOST
  - api: MTN Notification V1
    spec: openapi/mtn-group-notification-production.yml
    operations:
    - register3PPNotificationDetailsUsingPOST
    - register3PPNotificationDetailsUsingPUT
    - notification3PPByIdUsingPOST
- name: Messaging subscriptions
  style: delivery-receipt subscription
  apis:
  - api: MTN SMS
    spec: openapi/mtn-group-mtn-sms-api-v1.yml
    operations:
    - registerCallback
    - deregister Callback
  - api: MTN SMS v3 API
    spec: openapi/mtn-group-sms-v3-api.yml
    paths:
    - /messages/sms/subscription
    - /messages/sms/subscription/{subscriptionId}
  - api: MTN USSD interface
    spec: openapi/mtn-group-ussd.yml
    paths:
    - /messages/ussd/subscription
    - /messages/ussd/subscription/{subscriptionId}
- name: MoMo Collection Widget browser events
  style: DOM CustomEvent (client side, not a webhook)
  events:
  - mobile-money-qr-payment-created
  - mobile-money-qr-payment-canceled
  - mobile-money-qr-payment-successful
  - mobile-money-qr-payment-failed
  see: components/mtn-group-components.yml