openapi: 3.0.3
info:
  title: KOMOJU Barcodes API
  description: 'KOMOJU is a Japan-focused global payment gateway operated by Degica. The REST API accepts payments across Japanese and international payment methods - credit cards, convenience store (konbini), bank transfer, Pay-easy (ATM), and e-money / mobile wallets such as PayPay, Merpay, au PAY, Rakuten Pay, LINE Pay, Alipay, and WeChat Pay - plus a hosted checkout (Sessions), tokenization, saved customers, subscriptions, and webhook events.


    Base URL: https://komoju.com/api/v1. Authentication is HTTP Basic: send your secret (or publishable, where allowed) API key as the username and leave the password empty (for example `curl -u secret_key: ...`). Separate live and test key pairs are issued per merchant account. POST requests support idempotency via the `X-KOMOJU-IDEMPOTENCY` header, and an optional `X-KOMOJU-API-VERSION` header pins the API version.


    This description is grounded in the public KOMOJU API reference (doc.komoju.com). Paths, methods, and authentication are confirmed against that reference. Request/response schemas below are a representative, partly modeled subset - some object properties are simplified or marked additionalProperties where the full field list is extensive; consult the official reference for exhaustive field-level detail.'
  version: '1.0'
  contact:
    name: KOMOJU (Degica)
    url: https://en.komoju.com
  license:
    name: Proprietary
    url: https://en.komoju.com/terms/
servers:
- url: https://komoju.com/api/v1
  description: KOMOJU API (live and test share this host; the key pair selects the environment)
security:
- basicAuth: []
tags:
- name: Barcodes
  description: Konbini payment barcodes for compatible convenience-store payments.
paths:
  /barcodes/{payment_id}:
    parameters:
    - name: payment_id
      in: path
      required: true
      schema:
        type: string
    get:
      operationId: showBarcode
      tags:
      - Barcodes
      summary: Show a konbini barcode
      description: Fetches the latest barcode for a compatible konbini payment. If the barcode is still generating, the response has `status` of `pending` and a `retry_after` value (seconds) to wait before retrying.
      responses:
        '200':
          description: The barcode, or a pending status.
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    enum:
                    - ready
                    - pending
                  retry_after:
                    type: integer
                  barcode:
                    type: string
                additionalProperties: true
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    Unauthorized:
      description: Invalid authorization (missing or invalid API key).
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: The requested resource was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
            message:
              type: string
            param:
              type: string
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: 'HTTP Basic Authentication. Use your KOMOJU API key as the username and leave the password empty (for example `curl -u secret_key: ...`). Secret keys grant full access; publishable keys are limited to creating tokens and paying for sessions. Separate live and test key pairs exist per merchant.'