openapi: 3.1.0
info:
  title: Genome Payments API
  description: |
    Genome merchant payments API. Includes the Payout API for sending funds to
    cardholders (full card or tokenized card) and the Host-to-Host API for
    processing card transactions (AUTH, AUTH3D, SALE, SALE3D, SETTLE, REFUND,
    VOID, CHECK). All endpoints accept application/x-www-form-urlencoded
    serialized key-value pairs; the host-to-host endpoint also accepts JSON.
    Each request is authenticated using merchant_account and merchant_password
    credentials issued by Genome.
  version: "1.0.0"
  contact:
    name: Genome Developer Documentation
    url: https://developers.genome.eu/
servers:
  - url: https://api.genome.eu
    description: Production
tags:
  - name: Payouts
    description: Send funds to cardholders
  - name: Host-to-Host
    description: Direct card processing
paths:
  /api/pf/payout:
    post:
      tags: [Payouts]
      summary: Initiate a payout to a card
      description: |
        Sends funds to a cardholder using either full card data or a tokenized
        card. The final status is returned asynchronously to the merchant
        callback URL.
      operationId: initPayout
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/PayoutRequest'
      responses:
        '200':
          description: Payout request accepted
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PayoutResponse'
        '400':
          $ref: '#/components/responses/Error'
        '401':
          $ref: '#/components/responses/Error'
  /api/pf/host-to-host:
    post:
      tags: [Host-to-Host]
      summary: Process a card transaction
      description: |
        Submit a card transaction. The transaction_type parameter determines
        the operation (AUTH, AUTH3D, SALE, SALE3D, SETTLE, REFUND, VOID, CHECK).
      operationId: processTransaction
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/HostToHostRequest'
          application/json:
            schema:
              $ref: '#/components/schemas/HostToHostRequest'
      responses:
        '200':
          description: Transaction response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionResponse'
        '400':
          $ref: '#/components/responses/Error'
        '401':
          $ref: '#/components/responses/Error'
components:
  schemas:
    CardData:
      type: object
      properties:
        card[card_number]:
          type: string
          description: Card number
        card[card_exp_month]:
          type: string
        card[card_exp_year]:
          type: string
        card[card_cvv]:
          type: string
        card[card_holder]:
          type: string
        card[card_token]:
          type: string
          description: Hashed/tokenized card representation
    PayoutRequest:
      type: object
      required:
        - api_version
        - merchant_account
        - merchant_password
        - method
        - transaction_unique_id
        - amount
        - currency
        - callback_url
        - user_id
      properties:
        api_version:
          type: string
          example: "1"
        merchant_account:
          type: string
        merchant_password:
          type: string
        method:
          type: string
          example: init
        transaction_unique_id:
          type: string
        amount:
          type: string
        currency:
          type: string
          example: EUR
        callback_url:
          type: string
          format: uri
        user_id:
          type: string
        user_email:
          type: string
          format: email
        card[card_number]:
          type: string
        card[card_exp_month]:
          type: string
        card[card_exp_year]:
          type: string
        card[card_cvv]:
          type: string
        card[card_holder]:
          type: string
        card[card_token]:
          type: string
    PayoutResponse:
      type: object
      properties:
        sessionid:
          type: string
          maxLength: 36
        timestamp:
          type: integer
        status:
          type: string
          enum: [pending, success, decline, error]
        code:
          type: integer
        message:
          type: string
    HostToHostRequest:
      type: object
      required:
        - api_version
        - merchant_account
        - merchant_password
        - transaction_type
        - transaction_unique_id
      properties:
        api_version:
          type: string
          example: "1"
        merchant_account:
          type: string
        merchant_password:
          type: string
        transaction_type:
          type: string
          enum: [AUTH, AUTH3D, SALE, SALE3D, SETTLE, REFUND, VOID, CHECK]
        transaction_unique_id:
          type: string
        amount:
          type: string
        currency:
          type: string
        callback_url:
          type: string
          format: uri
        user_id:
          type: string
        user_email:
          type: string
          format: email
        user_ip:
          type: string
        card:
          type: object
          properties:
            card_number:
              type: string
            card_exp_month:
              type: string
            card_exp_year:
              type: string
            card_cvv:
              type: string
            card_holder:
              type: string
            card_token:
              type: string
    TransactionResponse:
      type: object
      properties:
        sessionid:
          type: string
        timestamp:
          type: integer
        status:
          type: string
          enum: [pending, success, decline, error]
        code:
          type: integer
        message:
          type: string
        redirect_url:
          type: string
          description: Present for 3DS flows
    Error:
      type: object
      properties:
        status:
          type: string
        code:
          type: integer
        message:
          type: string
  responses:
    Error:
      description: Error response
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'