M-Pesa (Safaricom Daraja) B2B API

openapi: 3.0.3
info:
  title: M-Pesa Daraja Account Balance B2B API
  description: 'Safaricom Daraja REST APIs for the M-Pesa mobile-money platform in Kenya: authorization, M-Pesa Express (STK Push), C2B, B2C, B2B, B2B Express Checkout, transaction status, account balance, reversal, dynamic QR, tax remittance and standing orders (M-Pesa Ratiba). Modeled from public Daraja documentation.'
  version: '1.0'
  termsOfService: https://developer.safaricom.co.ke/
  contact:
    name: Safaricom Daraja Support
    url: https://developer.safaricom.co.ke/
servers:
- url: https://api.safaricom.co.ke
  description: Production
- url: https://sandbox.safaricom.co.ke
  description: Sandbox
security:
- bearerAuth: []
tags:
- name: B2B
paths:
  /mpesa/b2b/v1/paymentrequest:
    post:
      operationId: b2bPaymentRequest
      tags:
      - B2B
      summary: Move funds between two business shortcodes.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/B2BRequest'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AsyncAckResponse'
  /v1/ussdpush/get-msisdn:
    post:
      operationId: b2bExpressCheckout
      tags:
      - B2B
      summary: Trigger a B2B Express Checkout USSD push to a till operator.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
components:
  schemas:
    B2BRequest:
      type: object
      required:
      - Initiator
      - SecurityCredential
      - CommandID
      - Amount
      - PartyA
      - PartyB
      - QueueTimeOutURL
      - ResultURL
      properties:
        Initiator:
          type: string
        SecurityCredential:
          type: string
        CommandID:
          type: string
          enum:
          - BusinessPayBill
          - BusinessBuyGoods
          - MerchantToMerchantTransfer
        SenderIdentifierType:
          type: string
        RecieverIdentifierType:
          type: string
        Amount:
          type: integer
        PartyA:
          type: string
        PartyB:
          type: string
        AccountReference:
          type: string
        Remarks:
          type: string
        QueueTimeOutURL:
          type: string
          format: uri
        ResultURL:
          type: string
          format: uri
    AsyncAckResponse:
      type: object
      description: Synchronous acknowledgement; the real result is POSTed to ResultURL.
      properties:
        OriginatorConversationID:
          type: string
        ConversationID:
          type: string
        ResponseCode:
          type: string
        ResponseDescription:
          type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: OAuth access token from /oauth/v1/generate
    basicAuth:
      type: http
      scheme: basic