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Yahoo Japan Text Analysis (BYOK)

Analyze Japanese text with the LY Corporation text analysis API: readings, proofreading, key phrases, morphology, dependency parsing, named entities and kana-kanji conversion with your own Client ID

Unify Dynamics LLC

Tools7read-only
Sign-inBYOKbring your own key
Key keptNeverused for one call only
PriceFreeoptional Pro limits
ProviderYahoo Japan Text Analysisunofficial, not affiliated
Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

Give the furigana for 漢字かな交じり文にふりがなを振ること。
Tools called
add_furigana
Proofread the text セキュリティー,食べれる
Tools called
proofread_text
What are the key phrases in 東京ミッドタウンから国立新美術館まで歩いて5分で着きます。?
Tools called
extract_key_phrases
Run morphological analysis on 美しい水車小屋の娘
Tools called
analyze_morphology
Parse the dependencies of 青空にたくさんの気球が浮かんでいた
Tools called
parse_dependencies
Extract the named entities from Xデータ株式会社の加藤さんは、10時に東京駅に到着しました。
Tools called
extract_named_entities

About

Yahoo Japan Text Analysis (BYOK) lets an AI assistant read your own Yahoo Japan Text Analysis data through the Yahoo Japan Text Analysis API with a key you supply (Yahoo! JAPAN Developer Network Client ID (application ID)). Read-only: 7 tools (add_furigana, proofread_text, extract_key_phrases, analyze_morphology, parse_dependencies, extract_named_entities, convert_kana_kanji). 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 jlp.yahooapis.jp. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Yahoo Japan Text Analysis. Yahoo Japan Text Analysis and its logos are trademarks of their owners and are used only to say which service the connector works with.

Sources: Live from the Yahoo Japan Text Analysis API (jlp.yahooapis.jp) with a BYOK key; documentation: https://developer.yahoo.co.jp/webapi/jlp/. Endpoints checked against that documentation on 2026-10-16.

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.

What it can do

7 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI
Read your data7 tools
  • Add furiganaAdd hiragana and romaji readings (furigana) to Japanese text, word by word, optionally only for kanji above a school grade.
  • Proofread textProofread Japanese text and list suspected mistakes: wrong conversions, misused words, redundant expressions, with a suggested replacement and the…
  • Extract key phrasesExtract up to 20 key phrases from Japanese text, each with an importance score up to 100.
  • Analyze morphologySplit Japanese text into morphemes.
  • Parse dependenciesParse the dependency structure of one Japanese sentence into chunks with their head chunk and tokens (trial feature of the vendor).
  • Extract named entitiesFind named entities in Japanese text (organizations, people, places, artifacts, dates, times, money, percentages) with offset and length.
  • Convert kana kanjiConvert hiragana or romaji into kanji candidates, segment by segment, with the other script forms of each segment.

Information

PublisherUnify Dynamics LLC
CategoryDeveloper tools
LanguagesEnglish
Built forWorldwide
CompatibilityAny MCP client · any agent · REST
Version0.1.0
MCP endpointhttps://byok-yahoo-japan-text-analysis.connectorbay.com/mcp
REST APIopenapi.json
SupportGet help · Status
CountryWorldwide
FunctionOther
LayerDeep connectors

Connect it to your agent

Three ways in, the same 7 tools.

MCP (Claude, Cursor, Windsurf, VS Code, any MCP client)https://byok-yahoo-japan-text-analysis.connectorbay.com/mcp
RESTPOST https://byok-yahoo-japan-text-analysis.connectorbay.com/v1/tools/<tool>
OpenAI function callinghttps://connectorbay.com/openai/byok-yahoo-japan-text-analysis.json
OpenAI-compatible chathttps://connectorbay.com/v1/chat/completions · how it works
  • Add the MCP URL in your client's connector, MCP or integration settings (streamable HTTP, no OAuth).
  • Key: send your Yahoo! JAPAN Developer Network Client ID (application ID) in the X-Upstream-Key header (get one at developer.yahoo.co.jp).
  • Ask a question; the agent picks the right tool and answers from the live data.

Yahoo Japan Text Analysis connector: questions and answers

What is the Yahoo Japan Text Analysis connector?

Yahoo Japan Text Analysis (BYOK) lets an AI assistant read your own Yahoo Japan Text Analysis data through the Yahoo Japan Text Analysis API with… It is a hosted MCP server with 7 tools such as Add furigana, Proofread text, Extract key phrases, Analyze morphology, Parse dependencies, Extract named entities, published by Unify Dynamics LLC. It is independent and not affiliated with Yahoo Japan Text Analysis.

How do I connect Yahoo Japan Text Analysis to Claude, ChatGPT or Cursor?

Add the MCP endpoint https://byok-yahoo-japan-text-analysis.connectorbay.com/mcp to your client's MCP, connector or integration settings (streamable HTTP, no OAuth). For REST, POST JSON to https://byok-yahoo-japan-text-analysis.connectorbay.com/v1/tools/<tool>; the OpenAPI description is at /openapi.json. For OpenAI function calling, load https://connectorbay.com/openai/byok-yahoo-japan-text-analysis.json.

Do I need a Yahoo Japan Text Analysis account or API key?

Yes: this is a bring-your-own-key connector. Create a Yahoo! JAPAN Developer Network Client ID (application ID) at https://developer.yahoo.co.jp/start/ and send it in the X-Upstream-Key header. ConnectorBay uses it for that one call only and never stores, logs or caches it.

Is Yahoo Japan Text Analysis read-only?

Yes. Every tool reads or computes. Nothing is created, changed, sent, paid or deleted in your account.

Is the Yahoo Japan Text Analysis connector free?

Yes. It is free to use within the published rate limits; an optional Pro key raises them. There is no account to create.

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Documentation

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Yahoo Japan Text Analysis (BYOK) — connector documentation

  • MCP endpoint: https://byok-yahoo-japan-text-analysis.connectorbay.com/mcp
  • REST API: POST https://byok-yahoo-japan-text-analysis.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://byok-yahoo-japan-text-analysis.connectorbay.com/openapi.json
  • Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
  • Authentication: your own Yahoo Japan Text Analysis Yahoo! JAPAN Developer Network Client ID (application ID), sent in the X-Upstream-Key header of every request (never stored, logged or cached)
  • Health: https://byok-yahoo-japan-text-analysis.connectorbay.com/health · Tool schemas: https://byok-yahoo-japan-text-analysis.connectorbay.com/tools.json
  • Publisher: Unify Dynamics LLC · connectorbay.com/byok-yahoo-japan-text-analysis · agent@connectorbay.com

What Yahoo Japan Text Analysis (BYOK) is for

Yahoo Japan Text Analysis (BYOK) lets an AI assistant read your own Yahoo Japan Text Analysis data through the Yahoo Japan Text Analysis API with a key you supply (Yahoo! JAPAN Developer Network Client ID (application ID)). Read-only: 7 tools (add_furigana, proofread_text, extract_key_phrases, analyze_morphology, parse_dependencies, extract_named_entities, convert_kana_kanji). 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 jlp.yahooapis.jp. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Yahoo Japan Text Analysis. Yahoo Japan Text Analysis 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:

  • "Give the furigana for 漢字かな交じり文にふりがなを振ること。"
  • "Proofread the text セキュリティー,食べれる"
  • "What are the key phrases in 東京ミッドタウンから国立新美術館まで歩いて5分で着きます。?"
  • "Run morphological analysis on 美しい水車小屋の娘"
  • "Parse the dependencies of 青空にたくさんの気球が浮かんでいた"
  • "Extract the named entities from Xデータ株式会社の加藤さんは、10時に東京駅に到着しました。"

What it does

  • add_furigana: Add hiragana and romaji readings (furigana) to Japanese text, word by word, optionally only for kanji above a school grade.
  • proofread_text: Proofread Japanese text and list suspected mistakes: wrong conversions, misused words, redundant expressions, with a suggested replacement and the position.
  • extract_key_phrases: Extract up to 20 key phrases from Japanese text, each with an importance score up to 100.
  • analyze_morphology: Split Japanese text into morphemes. Each token is a list: surface form, reading, base form, part of speech, subclass, conjugation type and form.
  • parse_dependencies: Parse the dependency structure of one Japanese sentence into chunks with their head chunk and tokens (trial feature of the vendor).
  • extract_named_entities: Find named entities in Japanese text (organizations, people, places, artifacts, dates, times, money, percentages) with offset and length.
  • convert_kana_kanji: Convert hiragana or romaji into kanji candidates, segment by segment, with the other script forms of each segment.

BYOK key

You bring your own Yahoo Japan Text Analysis Yahoo! JAPAN Developer Network Client ID (application ID) (https://developer.yahoo.co.jp/start/). 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 jlp.yahooapis.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

Live from the Yahoo Japan Text Analysis API (jlp.yahooapis.jp) with a BYOK key; documentation: https://developer.yahoo.co.jp/webapi/jlp/. 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 Yahoo Japan Text Analysis. Yahoo Japan Text Analysis 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 Yahoo Japan Text Analysis account.

Built for: Worldwide. Languages: English.

Privacy policy

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Yahoo Japan Text Analysis (BYOK) — Privacy Policy

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

What Yahoo Japan Text Analysis (BYOK) is. Yahoo Japan Text Analysis (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own Yahoo Japan Text Analysis data: Analyze Japanese text with the LY Corporation text analysis API: readings, proofreading, key phrases, morphology, dependency parsing, named entities and kana-kanji conversion with your own Client ID. You bring your own Yahoo Japan Text Analysis Yahoo! JAPAN Developer Network Client ID (application ID); the assistant sends it to us with each request.

BYOK key. The key you supply is used to make the one Yahoo Japan Text Analysis 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 jlp.yahooapis.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 Yahoo Japan Text Analysis 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 Yahoo Japan Text Analysis receives. The request we make on your behalf, including the key and the arguments, under Yahoo Japan Text Analysis's own terms and privacy policy. Yahoo Japan Text Analysis acts at your direction and is the only recipient of the data of your request besides our hosting provider.

What we return. The answer Yahoo Japan Text Analysis 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 Yahoo Japan Text Analysis 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. Yahoo Japan Text Analysis (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 Yahoo Japan Text Analysis at any time to end all access.

Children. Yahoo Japan Text Analysis (BYOK) is a general-audience service operated by the adult using the assistant, under Yahoo Japan Text Analysis's own age rules.

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

Terms of service

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Yahoo Japan Text Analysis (BYOK) — Terms of Service

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

  1. The Service. Yahoo Japan Text Analysis (BYOK) provides: Analyze Japanese text with the LY Corporation text analysis API: readings, proofreading, key phrases, morphology, dependency parsing, named entities and kana-kanji conversion with your own Client ID. 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 Yahoo Japan Text Analysis credentials and only access data you are allowed to access. Yahoo Japan Text Analysis's terms apply to your use of Yahoo Japan Text Analysis; 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 Yahoo Japan Text Analysis. Yahoo Japan Text Analysis 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 Yahoo Japan Text Analysis returns, lightly trimmed; it may be incomplete, delayed or changed by Yahoo Japan Text Analysis. Check important facts at the source.
  5. Read-only. The Service does not create, change, send or delete anything in your Yahoo Japan Text Analysis 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 Yahoo Japan Text Analysis'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; Yahoo Japan Text Analysis 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 Yahoo Japan Text Analysis 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 Yahoo Japan Text Analysis 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-yahoo-japan-text-analysis

Yahoo Japan Text Analysis (BYOK) support

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

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. Yahoo Japan Text Analysis (BYOK) never asks for them.

Get Yahoo Japan Text Analysis (BYOK)

Free · BYOK · Read-only

BYOK: bring your own keyThis connector uses your own Yahoo Japan Text Analysis Yahoo! JAPAN Developer Network Client ID (application ID). Create one at https://developer.yahoo.co.jp/start/, with the fewest permissions it needs (read-only if the provider offers it). Your assistant sends it in the X-Upstream-Key header with every request. It is used for that one call only: never stored, logged or cached, and only ever sent to Yahoo Japan Text Analysis. Revoke it at the provider whenever you like. Unofficial connector: not affiliated with Yahoo Japan Text Analysis.