openapi: 3.0.3
info:
  title: KOMOJU Barcodes Subscriptions 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: Subscriptions
  description: Recurring payments charged against a saved customer.
paths:
  /subscriptions:
    get:
      operationId: listSubscriptions
      tags:
      - Subscriptions
      summary: List subscriptions
      description: Lists existing subscriptions.
      parameters:
      - $ref: '#/components/parameters/Page'
      - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          description: A list of subscriptions.
          content:
            application/json:
              schema:
                type: object
                properties:
                  resources:
                    type: array
                    items:
                      $ref: '#/components/schemas/Subscription'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createSubscription
      tags:
      - Subscriptions
      summary: Create a subscription
      description: Creates a subscription (recurring payment) against a saved `customer`. The `period` may be `weekly`, `monthly`, or `yearly`. Subscriptions are immutable once created - delete and recreate to change one.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SubscriptionInput'
      responses:
        '200':
          description: The created subscription.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
  /subscriptions/{id}:
    parameters:
    - name: id
      in: path
      required: true
      schema:
        type: string
    get:
      operationId: showSubscription
      tags:
      - Subscriptions
      summary: Show a subscription
      description: Shows an existing subscription, including its customer and scrubbed payment details.
      responses:
        '200':
          description: The requested subscription.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteSubscription
      tags:
      - Subscriptions
      summary: Delete a subscription
      description: Deletes a subscription. Its recurring payments stop once deleted.
      responses:
        '200':
          description: The deleted subscription.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  parameters:
    Page:
      name: page
      in: query
      required: false
      schema:
        type: integer
        default: 1
    PerPage:
      name: per_page
      in: query
      required: false
      schema:
        type: integer
        default: 25
  responses:
    Unauthorized:
      description: Invalid authorization (missing or invalid API key).
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    UnprocessableEntity:
      description: The request payload failed validation.
      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:
    SubscriptionInput:
      type: object
      required:
      - customer
      - amount
      - currency
      - period
      properties:
        customer:
          type: string
        amount:
          type: integer
        currency:
          type: string
          example: JPY
        period:
          type: string
          enum:
          - weekly
          - monthly
          - yearly
        external_order_num:
          type: string
        metadata:
          type: object
          additionalProperties: true
    Subscription:
      type: object
      properties:
        id:
          type: string
        resource:
          type: string
          example: subscription
        status:
          type: string
        customer:
          type: string
        amount:
          type: integer
        currency:
          type: string
        period:
          type: string
          enum:
          - weekly
          - monthly
          - yearly
        next_payment:
          type: string
          format: date-time
        payment_details:
          type: object
          additionalProperties: true
        created_at:
          type: string
          format: date-time
    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.'