openapi: 3.1.0
info:
  title: Rakuten Web Services Ichibagt API
  description: 'Public Rakuten Web Services (RWS) REST/JSON APIs for searching the Rakuten

    Ichiba marketplace (item search, genre search, item ranking). All endpoints

    require a Rakuten application ID and access key.

    '
  version: '20260401'
  contact:
    name: Rakuten Web Services
    url: https://webservice.rakuten.co.jp/
servers:
- url: https://app.rakuten.co.jp
  description: Public Rakuten Web Services base host
- url: https://openapi.rakuten.co.jp
  description: Rakuten OpenAPI host (used by current RWS endpoints)
security:
- applicationId: []
  accessKey: []
tags:
- name: Ichibagt
paths:
  /ichibagt/api/IchibaGenre/Search/20260401:
    get:
      summary: Get Ichiba genre tree
      description: 'Returns ancestors, current genre, siblings, children, and attributes

        for a given genre. Use genreId=0 for the root.

        '
      operationId: searchIchibaGenre
      servers:
      - url: https://openapi.rakuten.co.jp
      parameters:
      - $ref: '#/components/parameters/applicationId'
      - $ref: '#/components/parameters/accessKey'
      - name: genreId
        in: query
        required: true
        schema:
          type: string
      - name: affiliateId
        in: query
        schema:
          type: string
      - name: format
        in: query
        schema:
          type: string
          enum:
          - json
          - xml
          default: json
      - name: callback
        in: query
        schema:
          type: string
      - name: elements
        in: query
        schema:
          type: string
      - name: formatVersion
        in: query
        schema:
          type: integer
          enum:
          - 1
          - 2
      responses:
        '200':
          description: Genre tree response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IchibaGenreSearchResponse'
      tags:
      - Ichibagt
components:
  schemas:
    IchibaGenreSearchResponse:
      type: object
      properties:
        ancestors:
          type: array
          items:
            $ref: '#/components/schemas/Genre'
        current:
          $ref: '#/components/schemas/Genre'
        children:
          type: array
          items:
            $ref: '#/components/schemas/Genre'
        siblings:
          type: array
          items:
            $ref: '#/components/schemas/Genre'
    Genre:
      type: object
      properties:
        genreId:
          type: integer
          format: int64
        genreName:
          type: string
        genreLevel:
          type: integer
  parameters:
    accessKey:
      name: accessKey
      in: query
      required: true
      description: Rakuten access key (may be sent as a header instead).
      schema:
        type: string
    applicationId:
      name: applicationId
      in: query
      required: true
      description: Rakuten application ID.
      schema:
        type: string
  securitySchemes:
    applicationId:
      type: apiKey
      in: query
      name: applicationId
      description: Rakuten application ID (issued from the RWS developer console).
    accessKey:
      type: apiKey
      in: query
      name: accessKey
      description: Rakuten RWS access key. May also be supplied as an HTTP header.