Rakuten Web Service (BYOK)

Rakuten Web Service (BYOK) — connector documentation

• MCP endpoint: https://byok-rakuten.connectorbay.com/mcp
• REST API: POST https://byok-rakuten.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://byok-rakuten.connectorbay.com/openapi.json
• Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
• Authentication: your own Rakuten Web Service application ID, sent in the X-Upstream-Key header and the access key in X-Upstream-Key-2 of every request (never stored, logged or cached)
• Health: https://byok-rakuten.connectorbay.com/health · Tool schemas: https://byok-rakuten.connectorbay.com/tools.json
• Publisher: Unify Dynamics LLC · connectorbay.com/byok-rakuten · agent@connectorbay.com

What Rakuten Web Service (BYOK) is for

Rakuten Web Service (BYOK) lets an AI assistant read your own Rakuten Web Service data through the Rakuten Web Service API with a key you supply (application ID). Read-only: 6 tools (search_items, list_shop_items, get_item_by_code, search_genres, search_attributes, get_item_ranking). The BYOK key travels with each request, is used for that one call only and is never stored, logged or cached; it is only ever sent to openapi.rakuten.co.jp. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Rakuten Web Service. Rakuten Web Service and its logos are trademarks of their owners and are used only to say which service the connector works with.

Ask your assistant things like:

• "Find rice cookers on Rakuten Ichiba under 20000 yen, cheapest first"
• "What items does the Rakuten shop 'example-shop' sell?"
• "Show Rakuten item example-shop:10000001"
• "What are the top-level genres on Rakuten Ichiba?"
• "Which attributes can items in genre 100283 have on Rakuten?"
• "What are the best-selling items on Rakuten Ichiba right now?"

What it does

• search_items: Search items listed on Rakuten Ichiba by keyword, optionally limited by genre, price range and availability. Returns name, code, price, URL, shop and review summary. Japanese keywords work best.
• list_shop_items: List items of one Rakuten Ichiba shop by its shop code (the part of the shop URL after rakuten.co.jp/), optionally with a keyword.
• get_item_by_code: Look up one Rakuten Ichiba item by its item code (form 'shopcode:itemnumber'), returning price, availability, shop and review summary.
• search_genres: Show a Rakuten Ichiba genre with its parent, sibling and child genres. Use genre ID 0 to list the top-level genres.
• search_attributes: List the product attributes defined for a Rakuten Ichiba genre, or one attribute when its ID is given.
• get_item_ranking: Get the Rakuten Ichiba sales ranking, overall or for one genre, or for an age group and gender (genre cannot be combined with age or gender).

BYOK key

You bring your own Rakuten Web Service application ID (https://webservice.rakuten.co.jp/app/create). Your assistant sends it in the X-Upstream-Key header with each request. ConnectorBay uses it for that one call only: it is never stored, logged or cached, never shown in an answer, and it is only sent to openapi.rakuten.co.jp over https, with no redirects followed. Create a key with the fewest permissions the tools need (read-only if the provider offers it), and revoke it at the provider whenever you like.

Data sources

• https://webservice.rakuten.co.jp/documentation/ichiba-item-search (the API this connector calls, with a BYOK key)

Live from the Rakuten Web Service API (openapi.rakuten.co.jp) with a BYOK key; documentation: https://webservice.rakuten.co.jp/documentation/ichiba-item-search. Endpoints checked against that documentation on 2026-10-16.

What it is not

Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Rakuten Web Service. Rakuten Web Service and its logos are trademarks of their owners and are used only to say which service the connector works with. It is read-only: it never creates, changes, sends or deletes anything in your Rakuten Web Service account.

Built for: Worldwide. Languages: English.

Rakuten Web Service (BYOK) — Privacy Policy

Effective 24 October 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Rakuten Web Service (BYOK) is. Rakuten Web Service (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own Rakuten Web Service data: Search Rakuten Ichiba items, shops, genres, attributes and rankings with your own Rakuten Web Service application ID and access key. You bring your own Rakuten Web Service application ID; the assistant sends it to us with each request.

BYOK key. The key you supply is used to make the one Rakuten Web Service call you asked for. Our application does not store it, write it to a log, put it in a cache, or share it. It is sent only to openapi.rakuten.co.jp, over https, and is removed from any text we return to you or your assistant. We do not follow redirects with your key. If Rakuten Web Service rejects it, we say so without repeating it.

What we receive. The arguments of each tool call, the BYOK key (for that call only), the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant) and standard server logs. What Rakuten Web Service receives. The request we make on your behalf, including the key and the arguments, under Rakuten Web Service's own terms and privacy policy. Rakuten Web Service acts at your direction and is the only recipient of the data of your request besides our hosting provider.

What we return. The answer Rakuten Web Service gives for your request, trimmed to the fields the tool documents. We do not keep it: it is returned to your assistant and not stored, cached or used to train anything.

What we do not do. We do not build a profile, sell or share personal information, or keep your Rakuten Web Service data. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting access logs (IP addresses, request paths and status codes) are kept for up to 30 days for security and abuse prevention; our application adds no request headers or bodies to them.

Sub-processors. Rakuten Web Service (the API you call with a BYOK key, at your direction). Hosting: Vercel (United States regions).

Your rights. Because we store no personal data beyond short-lived logs, requests to access, correct or delete data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. Revoke your key at Rakuten Web Service at any time to end all access.

Children. Rakuten Web Service (BYOK) is a general-audience service operated by the adult using the assistant, under Rakuten Web Service's own age rules.

Changes. We will post changes here with a new effective date.

Rakuten Web Service (BYOK) — Terms of Service

Effective 24 October 2026. These terms govern use of the Rakuten Web Service (BYOK) connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

1. The Service. Rakuten Web Service (BYOK) provides: Search Rakuten Ichiba items, shops, genres, attributes and rankings with your own Rakuten Web Service application ID and access key. It is accessed through an AI assistant or directly over MCP or HTTP, and is read-only.
2. Your own key, your own account. You must use your own Rakuten Web Service credentials and only access data you are allowed to access. Rakuten Web Service's terms apply to your use of Rakuten Web Service; you are responsible for complying with them, including any rate limits and permitted uses. Do not share a key you do not own.
3. Independent. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Rakuten Web Service. Rakuten Web Service and its logos are trademarks of their owners and are used only to say which service the connector works with.
4. No advice, no guarantees. Output is the data Rakuten Web Service returns, lightly trimmed; it may be incomplete, delayed or changed by Rakuten Web Service. Check important facts at the source.
5. Read-only. The Service does not create, change, send or delete anything in your Rakuten Web Service account.
6. Acceptable use. Automated use within the published rate limits is welcome. Do not use the Service to access data you are not entitled to, to circumvent Rakuten Web Service's controls, or to attack any system.
7. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time; Rakuten Web Service may change or end its API at any time.
8. Data. Our Privacy Policy describes what we process. In short: the BYOK key is used for the one call and not stored or logged.
9. Pro keys. Optional ConnectorBay Pro API keys are issued at our discretion and are separate from your Rakuten Web Service key.
10. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss arising from use of or reliance on the Service, including any action Rakuten Web Service takes on your account. Our total liability is limited to US $100.
11. Governing law. California law; venue in San Mateo County, California.
12. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/byok-rakuten

Rakuten Web Service (BYOK) support

Email agent@connectorbay.com. We answer within two business days.

• MCP endpoint: https://byok-rakuten.connectorbay.com/mcp
• REST API: https://byok-rakuten.connectorbay.com/openapi.json
• Live status: https://byok-rakuten.connectorbay.com/health

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. Rakuten Web Service (BYOK) never asks for them.