Instamojo Payment Requests API

openapi: 3.0.3
info:
  title: Instamojo Payments Authentication Payment Requests 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: Payment Requests
  description: Create and manage payment requests
paths:
  /payment_requests/:
    get:
      tags:
      - Payment Requests
      summary: List Payment Requests
      description: Get a list of all payment requests, optionally filtered by date range.
      operationId: listPaymentRequests
      parameters:
      - name: min_created_at
        in: query
        description: Filter payment requests created on or after this date (YYYY-MM-DD)
        required: false
        schema:
          type: string
          format: date
      - name: max_created_at
        in: query
        description: Filter payment requests created on or before this date (YYYY-MM-DD)
        required: false
        schema:
          type: string
          format: date
      - name: min_modified_at
        in: query
        description: Filter payment requests modified on or after this date (YYYY-MM-DD)
        required: false
        schema:
          type: string
          format: date
      - name: max_modified_at
        in: query
        description: Filter payment requests modified on or before this date (YYYY-MM-DD)
        required: false
        schema:
          type: string
          format: date
      - name: limit
        in: query
        description: Number of results per page
        required: false
        schema:
          type: integer
          minimum: 1
          maximum: 200
      - name: page
        in: query
        description: Page number for pagination
        required: false
        schema:
          type: integer
          minimum: 1
      responses:
        '200':
          description: List of payment requests
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  payment_requests:
                    type: array
                    items:
                      $ref: '#/components/schemas/PaymentRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      tags:
      - Payment Requests
      summary: Create a Payment Request
      description: 'Create a new payment request by specifying a purpose and amount. Returns a Payment Request ID and a URL to redirect the buyer to.

        '
      operationId: createPaymentRequest
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PaymentRequestCreate'
            example:
              purpose: Online Course Fee
              amount: '499.00'
              buyer_name: John Doe
              email: john@example.com
              phone: '+919876543210'
              send_email: true
              send_sms: false
              redirect_url: https://example.com/payment-success
              webhook: https://example.com/webhook/instamojo
              allow_repeated_payments: false
      responses:
        '200':
          description: Payment request created successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  payment_request:
                    $ref: '#/components/schemas/PaymentRequest'
        '400':
          description: Bad request - validation error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /payment_requests/{id}/:
    get:
      tags:
      - Payment Requests
      summary: Get a Payment Request
      description: Retrieve the status and details of a specific payment request by ID.
      operationId: getPaymentRequest
      parameters:
      - name: id
        in: path
        description: Unique ID of the payment request
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Payment request details
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  payment_request:
                    $ref: '#/components/schemas/PaymentRequestDetail'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /payment_requests/{id}/{payment_id}/:
    get:
      tags:
      - Payment Requests
      summary: Get Payment Details for a Payment Request
      description: Retrieve details of a specific payment associated with a payment request.
      operationId: getPaymentForRequest
      parameters:
      - name: id
        in: path
        description: Unique ID of the payment request
        required: true
        schema:
          type: string
      - name: payment_id
        in: path
        description: Unique ID of the payment
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Payment details within the payment request
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  payment_request:
                    allOf:
                    - $ref: '#/components/schemas/PaymentRequest'
                    - type: object
                      properties:
                        payment:
                          $ref: '#/components/schemas/Payment'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  schemas:
    PaymentRequestDetail:
      allOf:
      - $ref: '#/components/schemas/PaymentRequest'
      - type: object
        properties:
          payments:
            type: array
            description: List of payments made against this payment request
            items:
              $ref: '#/components/schemas/Payment'
    PaymentRequest:
      type: object
      properties:
        id:
          type: string
          description: Unique payment request ID
          example: ee5c9bf3e75445a8a7b8c3a7e2b4c9d1
        purpose:
          type: string
          description: Purpose of the payment
        amount:
          type: string
          description: Requested amount in INR
          example: '499.00'
        status:
          type: string
          description: Current status of the payment request
          enum:
          - Pending
          - Completed
          - Failed
          - Expired
        send_email:
          type: boolean
        send_sms:
          type: boolean
        email:
          type: string
          format: email
        phone:
          type: string
        buyer_name:
          type: string
        redirect_url:
          type: string
          format: uri
        webhook:
          type: string
          format: uri
        allow_repeated_payments:
          type: boolean
        longurl:
          type: string
          format: uri
          description: The payment URL to share with the buyer
          example: https://www.instamojo.com/@merchant/ee5c9bf3e75445
        created_at:
          type: string
          format: date-time
        modified_at:
          type: string
          format: date-time
    PaymentRequestCreate:
      type: object
      required:
      - purpose
      - amount
      properties:
        purpose:
          type: string
          description: Purpose or description of the payment
          maxLength: 255
        amount:
          type: string
          description: Amount to be paid in INR (e.g. "499.00")
          pattern: ^\d+(\.\d{1,2})?$
        buyer_name:
          type: string
          description: Name of the buyer (used for prefilling form)
          maxLength: 100
        email:
          type: string
          format: email
          description: Email address of the buyer
        phone:
          type: string
          description: Phone number of the buyer (with country code)
          example: '+919876543210'
        send_email:
          type: boolean
          description: Send payment link to buyer via email
          default: false
        send_sms:
          type: boolean
          description: Send payment link to buyer via SMS
          default: false
        redirect_url:
          type: string
          format: uri
          description: URL to redirect buyer after payment (success or failure)
        webhook:
          type: string
          format: uri
          description: Webhook URL to receive payment notifications
        allow_repeated_payments:
          type: boolean
          description: Allow multiple successful payments on this request
          default: true
    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
          description: Reason for payment failure (if applicable)
          nullable: true
        payment_request:
          type: string
          description: ID of the associated payment request
        created_at:
          type: string
          format: date-time
  responses:
    Unauthorized:
      description: Authentication required or token expired
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: OAuth2 Bearer token obtained from /oauth2/token/