openapi: 3.0.3
info:
  title: Instamojo Payments Authentication API
  description: 'REST API for creating and managing payment requests, processing refunds, retrieving payment details, and managing orders for Indian businesses. Instamojo is trusted by over 1.2 million Indian small businesses.

    '
  version: '2.0'
  termsOfService: https://www.instamojo.com/terms/
  contact:
    name: Instamojo Support
    url: https://support.instamojo.com/
  license:
    name: Proprietary
    url: https://www.instamojo.com/terms/
servers:
- url: https://api.instamojo.com/v2
  description: Production server
- url: https://test.instamojo.com/v2
  description: Sandbox/Test server
security:
- BearerAuth: []
tags:
- name: Authentication
  description: OAuth2 token generation for API access
paths:
  /oauth2/token/:
    post:
      tags:
      - Authentication
      summary: Generate Access Token
      description: 'Generate an OAuth2 access token using client credentials. Provide client_id and client_secret to receive a bearer token for subsequent API calls.

        '
      operationId: generateAccessToken
      security: []
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
              - grant_type
              - client_id
              - client_secret
              properties:
                grant_type:
                  type: string
                  enum:
                  - client_credentials
                  description: OAuth2 grant type
                client_id:
                  type: string
                  description: Your Instamojo client ID
                client_secret:
                  type: string
                  description: Your Instamojo client secret
      responses:
        '200':
          description: Access token generated successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AccessToken'
              example:
                access_token: c4e17ad5cc4e7b43b2f5f9ab9ca6c928
                token_type: Bearer
                expires_in: 36000
                scope: read write
        '400':
          description: Invalid client credentials
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    AccessToken:
      type: object
      properties:
        access_token:
          type: string
          description: Bearer token for API authentication
        token_type:
          type: string
          example: Bearer
        expires_in:
          type: integer
          description: Token expiry in seconds
          example: 36000
        scope:
          type: string
          example: read write
    Error:
      type: object
      properties:
        success:
          type: boolean
          example: false
        message:
          type: string
          description: Error message describing what went wrong
        errors:
          type: object
          description: Field-level validation errors
          additionalProperties:
            type: array
            items:
              type: string
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: OAuth2 Bearer token obtained from /oauth2/token/