openapi: 3.0.1
info:
  title: Africa's Talking Airtime API
  description: 'Unified REST API for Africa''s Talking communications products: SMS (single, bulk, premium, subscriptions), USSD callbacks, Voice (call, transfer, media upload, queue status), Airtime, Mobile Data, and Payments (mobile C2B checkout, B2C, B2B). Requests authenticate with an `apiKey` header and a `username` parameter. Hosts differ per product: messaging, airtime, and subscriptions live under api.africastalking.com/version1; voice under voice.africastalking.com; mobile data under bundles.africastalking.com; and payments under payments.africastalking.com. Sandbox equivalents insert `.sandbox.` into each host.'
  termsOfService: https://africastalking.com/terms
  contact:
    name: Africa's Talking Support
    url: https://help.africastalking.com
  version: version1
servers:
- url: https://api.africastalking.com/version1
  description: Messaging, Airtime and Subscription production host
- url: https://api.sandbox.africastalking.com/version1
  description: Messaging, Airtime and Subscription sandbox host
- url: https://voice.africastalking.com
  description: Voice production host
- url: https://bundles.africastalking.com
  description: Mobile Data production host
- url: https://payments.africastalking.com
  description: Payments production host
security:
- apiKey: []
tags:
- name: Airtime
  description: Distribute mobile airtime to recipients.
paths:
  /airtime/send:
    post:
      operationId: sendAirtime
      tags:
      - Airtime
      summary: Send airtime
      description: Distribute airtime to one or more recipients. `recipients` is a JSON-encoded array.
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/SendAirtimeRequest'
      responses:
        '201':
          description: Airtime request accepted.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SendAirtimeResponse'
components:
  schemas:
    SendAirtimeResponse:
      type: object
      properties:
        errorMessage:
          type: string
          example: None
        numSent:
          type: integer
          example: 1
        totalAmount:
          type: string
          example: KES 100.0000
        totalDiscount:
          type: string
          example: KES 3.0000
        responses:
          type: array
          items:
            type: object
            properties:
              phoneNumber:
                type: string
              amount:
                type: string
              status:
                type: string
              requestId:
                type: string
              discount:
                type: string
              errorMessage:
                type: string
    SendAirtimeRequest:
      type: object
      required:
      - username
      - recipients
      properties:
        username:
          type: string
        recipients:
          type: string
          description: JSON-encoded array of recipient objects, each with phoneNumber, currencyCode, amount, and optional maxNumRetry.
          example: '[{"phoneNumber":"+254711XXXYYY","currencyCode":"KES","amount":"100"}]'
        maxNumRetry:
          type: integer
          description: Maximum delivery retries in hours on failure.
  securitySchemes:
    apiKey:
      type: apiKey
      in: header
      name: apiKey
      description: Africa's Talking API key generated from your account dashboard.