Apple Pay Payment Status API

openapi: 3.1.0
info:
  title: Apple Pay JS Merchant Registration Payment Status API
  description: Server-side REST API used in conjunction with the Apple Pay JS client-side JavaScript API for processing Apple Pay payments on the web. Merchants call Apple's payment gateway to validate their merchant identity and obtain a payment session, which is then used by the client-side ApplePaySession to authorize payments via Touch ID or Face ID in Safari.
  version: '1.0'
  contact:
    name: Apple Developer Support
    url: https://developer.apple.com/support/apple-pay/
  termsOfService: https://developer.apple.com/apple-pay/acceptable-use-guidelines/
servers:
- url: https://apple-pay-gateway.apple.com/paymentservices
  description: Apple Pay Production Gateway
- url: https://apple-pay-gateway-nc-pod5.apple.com/paymentservices
  description: Apple Pay Sandbox Gateway
security:
- merchantCertificate: []
tags:
- name: Payment Status
  description: Endpoints for checking payment transaction status
paths:
  /payments/apple-pay/{transactionId}:
    get:
      operationId: getPaymentStatus
      summary: Apple Pay Get payment transaction status
      description: Retrieves the status of a previously submitted Apple Pay payment transaction.
      tags:
      - Payment Status
      parameters:
      - $ref: '#/components/parameters/transactionId'
      responses:
        '200':
          description: Transaction status retrieved
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaymentResult'
        '404':
          description: Transaction not found
components:
  schemas:
    PaymentResult:
      type: object
      description: Result of payment processing
      properties:
        transactionId:
          type: string
          description: Unique transaction identifier
        status:
          type: string
          enum:
          - authorized
          - captured
          - declined
          - error
          - pending
          description: Payment transaction status
        authorizationCode:
          type: string
          description: Authorization code from the payment processor
        amount:
          type: number
          description: Authorized or captured amount
        currency:
          type: string
          description: ISO 4217 currency code
        processedAt:
          type: string
          format: date-time
          description: Timestamp when the payment was processed
  parameters:
    transactionId:
      name: transactionId
      in: path
      required: true
      description: Unique transaction identifier returned from payment processing
      schema:
        type: string
  securitySchemes:
    merchantCertificate:
      type: mutualTLS
      description: Mutual TLS authentication using the Apple Pay Merchant Identity Certificate. The certificate is obtained from the Apple Developer portal and must be associated with the merchant identifier.
externalDocs:
  description: Apple Pay on the Web Documentation
  url: https://developer.apple.com/documentation/apple_pay_on_the_web