Rakuten

Rakuten RMS (Merchant Server) API

RMS (Rakuten Merchant Server) is the operational API for Rakuten Ichiba sellers, covering item management, order management, shipping, inventory, and customer messaging. Access is restricted to approved Ichiba shop owners and partner ERP / OMS vendors.

GitHub

Other Resources

🔗
ProductPage
https://webservice.rms.rakuten.co.jp/

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/rms"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
aid: rakuten:rms
name: Rakuten RMS (Merchant Server) API
description: 'RMS (Rakuten Merchant Server) is the operational API for

  Rakuten Ichiba sellers, covering item management, order

  management, shipping, inventory, and customer messaging.

  Access is restricted to approved Ichiba shop owners and

  partner ERP / OMS vendors.

  '
humanURL: https://webservice.rms.rakuten.co.jp/
baseURL: https://api.rms.rakuten.co.jp
tags:
- Merchant
- Ichiba
- Order
- Inventory
- ERP
tags_raw:
- Merchant
- Ichiba
- Orders
- Inventory
- ERP
properties:
- type: ProductPage
  url: https://webservice.rms.rakuten.co.jp/