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OpenAPI Specification

openapi: 3.2.0
info:
  title: Instamojo Authentication Payments 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: Payments
  description: Retrieve payment details
paths:
  /payments/{payment_id}/:
    get:
      tags:
      - Payments
      summary: Get Payment Details
      description: Retrieve details of a specific payment by its payment ID.
      operationId: getPayment
      parameters:
      - name: payment_id
        in: path
        description: Unique payment ID (returned in redirect URL and webhook)
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Payment details
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  payment:
                    $ref: '#/components/schemas/Payment'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  schemas:
    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
    Payment:
      type: object
      properties:
        payment_id:
          type: string
          description: Unique payment ID
          example: MOJO5a06005J21512345
        quantity:
          type: integer
          description: Quantity purchased
          example: 1
        status:
          type: string
          description: Status of the payment
          enum:
          - Credit
          - Failed
          - Pending
        currency:
          type: string
          description: Currency code
          example: INR
        amount:
          type: string
          description: Amount paid
          example: '499.00'
        buyer_name:
          type: string
          description: Name of the buyer
        buyer_email:
          type: string
          format: email
          description: Email of the buyer
        buyer_phone:
          type: string
          description: Phone number of the buyer
        instrument_type:
          type: string
          description: Payment instrument used
          enum:
          - CREDIT_CARD
          - DEBIT_CARD
          - NET_BANKING
          - WALLET
          - UPI
          - EMI
        billing_instrument:
          type: string
          description: Specific billing instrument name
        failure_reason:
          type:
          - string
          - 'null'
          description: Reason for payment failure (if applicable)
        payment_request:
          type: string
          description: ID of the associated payment request
        created_at:
          type: string
          format: date-time
  responses:
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Authentication required or token expired
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: OAuth2 Bearer token obtained from /oauth2/token/