openapi: 3.0.1
info:
  title: AbacatePay Billing API
  description: REST API for AbacatePay, a Brazilian payment gateway focused on instant Pix payments. Create billings and charges, generate and check Pix QR Codes, manage customers and coupons, and request withdrawals. All responses follow the {data, error} envelope and authenticate with a Bearer API key.
  termsOfService: https://www.abacatepay.com/termos
  contact:
    name: AbacatePay Support
    url: https://docs.abacatepay.com
  version: v1
servers:
- url: https://api.abacatepay.com/v1
  description: AbacatePay API v1 production server
security:
- bearerAuth: []
tags:
- name: Billing
  description: Create and list billings (charges) with a shareable checkout URL.
paths:
  /billing/create:
    post:
      operationId: createBilling
      tags:
      - Billing
      summary: Create a new billing
      description: Creates a billing (charge) backed by a shareable checkout URL, supporting Pix and other payment methods, products, coupons, and customer association.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateBillingRequest'
      responses:
        '200':
          description: Billing created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BillingResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /billing/list:
    get:
      operationId: listBillings
      tags:
      - Billing
      summary: List billings
      description: Returns the list of billings created for the authenticated store.
      responses:
        '200':
          description: A list of billings
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Billing'
                  error:
                    nullable: true
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    CreateBillingRequest:
      type: object
      required:
      - frequency
      - methods
      - products
      - returnUrl
      - completionUrl
      properties:
        frequency:
          type: string
          description: Billing frequency.
          enum:
          - ONE_TIME
          - MULTIPLE_PAYMENTS
        methods:
          type: array
          items:
            type: string
            enum:
            - PIX
          description: Accepted payment methods.
        products:
          type: array
          items:
            $ref: '#/components/schemas/Product'
        returnUrl:
          type: string
          format: uri
          description: URL the customer is sent to when they click "back".
        completionUrl:
          type: string
          format: uri
          description: URL the customer is redirected to after payment.
        customerId:
          type: string
          description: Existing customer ID to associate with the billing.
        customer:
          $ref: '#/components/schemas/CustomerData'
        allowCoupons:
          type: boolean
        coupons:
          type: array
          items:
            type: string
        externalId:
          type: string
        metadata:
          $ref: '#/components/schemas/Metadata'
    Product:
      type: object
      required:
      - externalId
      - name
      - quantity
      - price
      properties:
        externalId:
          type: string
          description: Your identifier for the product.
        name:
          type: string
        description:
          type: string
        quantity:
          type: integer
          minimum: 1
        price:
          type: integer
          description: Unit price in cents (BRL centavos).
    Error:
      type: object
      properties:
        data:
          nullable: true
        error:
          type: string
          description: Human-readable error message.
    BillingResponse:
      type: object
      properties:
        data:
          $ref: '#/components/schemas/Billing'
        error:
          nullable: true
    CustomerData:
      type: object
      properties:
        name:
          type: string
        cellphone:
          type: string
        email:
          type: string
          format: email
        taxId:
          type: string
          description: Brazilian tax identifier (CPF or CNPJ).
    Billing:
      type: object
      properties:
        id:
          type: string
        url:
          type: string
          format: uri
          description: Shareable checkout URL.
        amount:
          type: integer
          description: Total amount in cents.
        status:
          type: string
          enum:
          - PENDING
          - EXPIRED
          - CANCELLED
          - PAID
          - REFUNDED
        frequency:
          type: string
        methods:
          type: array
          items:
            type: string
        products:
          type: array
          items:
            $ref: '#/components/schemas/Product'
        metadata:
          $ref: '#/components/schemas/Metadata'
    Metadata:
      type: object
      description: Arbitrary key/value metadata attached to a resource.
      additionalProperties: true
  responses:
    Unauthorized:
      description: Missing or invalid API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key
      description: 'Authenticate with your AbacatePay API key as a Bearer token: `Authorization: Bearer <abacatepay-api-key>`.'