Apple Pay Merchant Registration API

openapi: 3.2.0
info:
  title: Apple Pay JS Merchant Registration 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: Merchant Registration
  description: Register and manage merchant domains for Apple Pay on the Web
paths:
  /registerMerchant:
    post:
      operationId: registerMerchant
      summary: Register a merchant for Apple Pay on the Web
      description: Registers a merchant domain for Apple Pay on the Web. The merchant must host a domain verification file at /.well-known/apple-developer-merchantid-domain-association before calling this endpoint.
      tags:
      - Merchant Registration
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MerchantRegistrationRequest'
      responses:
        '200':
          description: Merchant domain registered successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MerchantRegistrationResponse'
        '400':
          description: Invalid request or domain verification failed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Authentication failed
  /domains:
    get:
      operationId: listMerchantDomains
      summary: Apple Pay List registered merchant domains
      description: Returns a list of domains that have been registered for Apple Pay on the Web for the authenticated merchant.
      tags:
      - Merchant Registration
      parameters:
      - name: merchantIdentifier
        in: query
        required: true
        description: The merchant identifier issued by Apple
        schema:
          type: string
      responses:
        '200':
          description: List of registered domains
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MerchantDomainsResponse'
        '401':
          description: Authentication failed
    delete:
      operationId: removeMerchantDomain
      summary: Apple Pay Remove a registered merchant domain
      description: Removes a previously registered domain from the merchant's Apple Pay on the Web configuration.
      tags:
      - Merchant Registration
      parameters:
      - name: merchantIdentifier
        in: query
        required: true
        description: The merchant identifier issued by Apple
        schema:
          type: string
      - name: domainName
        in: query
        required: true
        description: The domain name to remove
        schema:
          type: string
      responses:
        '200':
          description: Domain removed successfully
        '401':
          description: Authentication failed
        '404':
          description: Domain not found
components:
  schemas:
    MerchantDomainsResponse:
      type: object
      properties:
        merchantIdentifier:
          type: string
          description: The merchant identifier
        domainNames:
          type: array
          items:
            type: string
          description: List of registered domain names
    ErrorResponse:
      type: object
      properties:
        statusCode:
          type: string
          description: Error status code
        statusMessage:
          type: string
          description: Human-readable error message
    MerchantRegistrationResponse:
      type: object
      properties:
        status:
          type: string
          description: Registration status
        merchantIdentifier:
          type: string
          description: The merchant identifier
        registeredDomains:
          type: array
          items:
            type: string
          description: List of successfully registered domains
    MerchantRegistrationRequest:
      type: object
      required:
      - merchantIdentifier
      - domainNames
      properties:
        merchantIdentifier:
          type: string
          description: The Apple-issued merchant identifier
        domainNames:
          type: array
          items:
            type: string
          description: List of domain names to register for Apple Pay
  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