openapi: 3.0.1
info:
  title: Hyperline Billable Events Payments API
  description: The Hyperline API follows REST principles and uses JSON-encoded request and response payloads. It powers usage-based billing and subscription management for B2B SaaS - covering customers, products and plans, subscriptions, billable event ingestion, invoices, payments, credit notes, and webhooks. The full machine-readable specification is published by Hyperline at https://api.hyperline.co/openapi.
  termsOfService: https://www.hyperline.co/legal/terms
  contact:
    name: Hyperline Support
    url: https://docs.hyperline.co
  version: '1.0'
servers:
- url: https://api.hyperline.co/v1
  description: Production
- url: https://sandbox.api.hyperline.co/v1
  description: Sandbox
security:
- bearerAuth: []
tags:
- name: Payments
paths:
  /payments:
    post:
      operationId: createPayment
      tags:
      - Payments
      summary: Record a payment
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Payment'
      responses:
        '201':
          description: The recorded payment.
  /transactions/{id}/refund:
    post:
      operationId: refundTransaction
      tags:
      - Payments
      summary: Refund a transaction
      parameters:
      - $ref: '#/components/parameters/IdParam'
      responses:
        '200':
          description: The refunded transaction.
components:
  schemas:
    Payment:
      type: object
      properties:
        id:
          type: string
        invoice_id:
          type: string
        amount:
          type: integer
        currency:
          type: string
  parameters:
    IdParam:
      name: id
      in: path
      required: true
      schema:
        type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'Authenticate with your Hyperline API key passed as a bearer token in the Authorization header - `Authorization: Bearer <API_KEY>`.'