PayFast Credit Card Transactions API

openapi: 3.1.0
info:
  title: PayFast Credit Card Transactions API
  description: 'South African payment gateway providing REST APIs for online payment processing, subscription billing, tokenized recurring card payments, onsite checkout, and merchant refunds. Trusted by 80,000+ South African businesses and certified PCI-DSS Level 1.

    '
  version: v1
  contact:
    name: PayFast Developer Support
    url: https://support.payfast.help
  license:
    name: Proprietary
    url: https://payfast.io
servers:
- url: https://api.payfast.co.za/v1
  description: Production API server
- url: https://sandbox.payfast.co.za/v1
  description: Sandbox / test server
security:
- merchantAuth: []
tags:
- name: Credit Card Transactions
  description: Query individual credit card transaction details
paths:
  /process/query/{token}:
    get:
      operationId: fetchCreditCardTransaction
      summary: Fetch credit card transaction details
      description: Retrieve the details of a specific credit card transaction by its token/ID.
      tags:
      - Credit Card Transactions
      parameters:
      - name: token
        in: path
        required: true
        description: The credit card transaction token or ID
        schema:
          type: string
        example: '1124148'
      responses:
        '200':
          description: Credit card transaction details returned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreditCardTransactionResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    ErrorResponse:
      type: object
      properties:
        code:
          type: integer
          description: HTTP error code
          example: 400
        status:
          type: string
          description: Error status
          example: failed
        data:
          type: object
          properties:
            response:
              type: string
              description: Error message
              example: Required "token" parameter missing
    CreditCardTransactionResponse:
      type: object
      description: Credit card transaction details
      properties:
        code:
          type: integer
          example: 200
        status:
          type: string
          example: success
        data:
          type: object
          properties:
            response:
              type: object
              properties:
                pf_payment_id:
                  type: string
                  description: PayFast payment ID
                  example: '1124148'
                payment_status:
                  type: string
                  example: COMPLETE
                amount_gross:
                  type: number
                  format: float
                  example: 150.0
                amount_fee:
                  type: number
                  format: float
                  example: 4.5
                amount_net:
                  type: number
                  format: float
                  example: 145.5
                card_number:
                  type: string
                  description: Masked card number
                  example: 4***********1234
                card_expiry:
                  type: string
                  description: Card expiry (MM/YY)
                  example: 12/28
  responses:
    Unauthorized:
      description: Unauthorized — invalid or missing merchant authentication signature
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    BadRequest:
      description: Bad request — missing or invalid parameters
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    merchantAuth:
      type: apiKey
      in: header
      name: merchant-id
      description: 'PayFast API authentication uses an MD5 signature derived from the merchant ID, passphrase, timestamp, and request data. Required headers include merchant-id, version, timestamp, and signature.

        '