M-Pesa (Safaricom Daraja) Authorization API

openapi: 3.0.3
info:
  title: M-Pesa Daraja Account Balance Authorization 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: Authorization
paths:
  /oauth/v1/generate:
    get:
      operationId: generateAccessToken
      tags:
      - Authorization
      summary: Generate an OAuth access token.
      description: Returns a short-lived (typically 3599s) OAuth access token. Authenticate with HTTP Basic using the app consumer key as username and consumer secret as password.
      security:
      - basicAuth: []
      parameters:
      - name: grant_type
        in: query
        required: true
        schema:
          type: string
          default: client_credentials
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AccessTokenResponse'
components:
  schemas:
    AccessTokenResponse:
      type: object
      properties:
        access_token:
          type: string
        expires_in:
          type: string
          example: '3599'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: OAuth access token from /oauth/v1/generate
    basicAuth:
      type: http
      scheme: basic