MCP servers › app.web.yutai-mcp › yutai-mcp
MCP server · registry snapshot 2026-10-23 · last tested 2026-10-23
app.web.yutai-mcp/yutai-mcp
Japanese shareholder benefits search, cross-trading cost estimates, and trading date calculations. — the publisher's description
Summary
app.web.yutai-mcp/yutai-mcp is a remote MCP server listed in the official MCP registry at version 1.0.0. On 2026-10-23 ProtocolProbe connected to it in read-only mode and read its inventory: 4 tools, 0 resources and 0 prompts.
Record checks
1 of 2 record checks met · 7 do not apply
- met: Registry entry is active and says how to run it
- not met: Source repository link opens
- not applicable: Repository is not archived
- not applicable: Code pushed to the repository in the 90 days before our check
- not applicable: Repository publishes a security policy (SECURITY.md)
- not applicable: Package names its licence with a standard (SPDX) identifier
- not applicable: The version the registry lists can be installed and is not withdrawn
- not applicable: npm package carries build provenance (attestation)
- not applicable: No known critical or high advisory in the package or its dependencies
- Not ranked by downloads: a remote server publishes no download figure
- Not ranked by stars: no public GitHub repository
From public records, not a safety rating. Each check with its reason
Key facts
- Runs
- remote (hosted by the publisher)
- Transport
- streamable HTTP
- Sign-in
- none needed to open a session
- Tools
- 4
- Described as changing data
- 0 of 4 toolsAI-classified
- Mainly works on
- nothing outside itself: it only answers questionsAI-classified
- Topic
- finance-and-paymentsAI-classified
- Last tested
- 2026-10-23
How fresh this is
- Live-tested
- yes, a real session (not a text-only review)
- Last tested
- 2026-10-23
- Mode
- read-only (no tool calls)
- Latest version
- 1.0.0, published 2026-10-07 (registry, as of the 2026-10-23 snapshot)
- First listed version
- 2026-10-07 (earliest version still in the registry; older removed versions would be earlier)
- Registry data
- snapshot 2026-10-23
- Package and repository
- checked 2026-10-22
- Engine
- mcp-runtime-engine@0.1.0 · sdk@1.32.0
Changes since the last refresh
New in the registry: not in the list of 2026-10-04, listed on 2026-10-23 with version 1.0.0 (published 2026-10-07).
Source: the official MCP Registry list on 2026-10-04 and on 2026-10-23.
What it is
What does this server offer?
Observed inventoryWhat it mainly works on, as our AI model read its tool descriptions: nothing outside itself: it only answers questions.
None of its 4 tools are described as changing anything. For 1 the reading was uncertain, so no mark is shown.
- search_benefitsreads or searches
“株主優待を検索する。複数条件を組み合わせて絞り込める。 【重要: vestingDates と karaDates の違い】 vestingDates(権利確定日): 現物保有で優待を得るための権利確定月日。「○月に権利確定する銘柄」はこちら。 karaDates(空クロス日): 権利確定日だけでなく別の日付にも株を一定数保有する必要がある銘柄の、その追加保有日。 端株保有だけでは条件を満たせず…”
57 inputs
keywordstring“部分一致検索。対象: 銘柄コード / 銘柄名 / サマリー / 詳細説明(description) / 更新メモ(updateNote) / 優待内容の各候補テキスト(details[].candidates[].detail)。「コストコ」「株主優待券」など優待の中身でも検索できる。例: "3397", "すかいら…”benefitTypesarray“優待種別(OR検索)。例: ["QUO","MealTicket"]。指定した種別のいずれかを持つ銘柄を返す。種別一覧: QUO, RiceVoucher, CashVoucher, JEFVoucher, MealTicket, FacilityTicket, ShoppingTicket, HotelTicket…”vestingDatestring“権利確定月または月日で単一絞り込み。例: "03"=3月, "03-20"=3月20日 (vestingDates配列に対してマッチ)”vestingDateFromstring“次回権利確定日の下限 (YYYY-MM-DD)。nextVestingDate >= この値の銘柄を返す”vestingDateTostring“次回権利確定日の上限 (YYYY-MM-DD)。nextVestingDate <= この値の銘柄を返す”requireKaraboolean“true=空クロスが必要な日付(karaDates)がある銘柄のみ / false=karaDatesがない銘柄のみ”karaDatestring“空クロスが必要な月または月日で絞り込む。「○月に空クロスが必要な銘柄」を探す場合はここを使う。例: "05"=5月, "05-20"=5月20日。vestingDate(権利確定日)とは別物なので混同しないこと。”karaDateFromstring“次回空クロス日の下限 (YYYY-MM-DD)。例: "2026-05-01" → 5月以降に空クロスが必要な銘柄”karaDateTostring“次回空クロス日の上限 (YYYY-MM-DD)。例: "2026-05-31" → 5月末までに空クロスが必要な銘柄”lendingTypestring“信用取引区分。both=制度クロス可, buying_only=空クロス必要, none=クロス不可”sellProhibitedboolean“制度信用の売禁(新規売り停止)。true=売禁の銘柄のみ / false=売禁でない銘柄のみ。データ未取得は「規制なし」扱い”sellCautionboolean“制度信用の注意喚起(増担保・申込停止等)。true=注意喚起中の銘柄のみ / false=注意喚起でない銘柄のみ”sellRestrictedboolean“売禁または注意喚起(制度信用の要注意銘柄)。true=いずれかに該当する銘柄のみ / false=どちらでもない銘柄のみ”longTypestring“長期保有条件の完全一致。none=なし, longAddition=長期優遇, longOnly=長期必須”hasLongConditionboolean“trueにすると長期条件あり銘柄 (longAddition または longOnly) のみ返す”anyDayboolean“長期条件の判定で、決まった基準日以外にも「任意の日」に保有状況を抜き打ちで確認すると明記されている銘柄かどうか。trueにするとそれに該当する銘柄のみ返す(基準日だけクロスで確保しても長期条件を満たせない可能性がある、要注意銘柄)”minActualYieldnumber“実利回り下限 (%)。優待の申込単位のうち達成可能な最良の額面利回りで、クロスの手数料・貸株料・逆日歩は含まない。手数料込みで絞るには minNetYield を使う。株価データが無い銘柄(price未取得)はこの条件では判定できないため除外される。例: 1.0 = 1%以上”maxActualYieldnumber“実利回り上限 (%)。優待の申込単位のうち達成可能な最良の額面利回りで、クロスの手数料・貸株料・逆日歩は含まない。手数料込みで絞るには maxNetYield を使う。株価データが無い銘柄(price未取得)はこの条件では判定できないため除外される。例: 5.0 = 5%以下”minValuenumber“絞り込みたい優待評価額の下限 (円)。優待自身の評価額の範囲(出力のminValue〜maxValue)がこの下限〜maxValue引数の範囲に少しでも重なる銘柄を返す(単一値の一致ではない)。例: 1000 = 1000円以上を含む銘柄”maxValuenumber“絞り込みたい優待評価額の上限 (円)。優待自身の評価額の範囲(出力のminValue〜maxValue)がminValue引数〜この上限の範囲に少しでも重なる銘柄を返す(単一値の一致ではない)。例: 10000 = 10000円以下を含む銘柄”minRequiredFundsnumber“必要資金の下限 (円)。株価×minRequiredUnits で計算。株価データが無い銘柄(price未取得)はこの条件では判定できないため除外される”maxRequiredFundsnumber“必要資金の上限 (円)。株価×minRequiredUnits で計算。株価データが無い銘柄(price未取得)はこの条件では判定できないため除外される”minPrevLendingInterestnumber“前回逆日歩率(1日あたり・株価に対する比率)の下限。例: 0.005 = 1日あたり0.5%以上”maxPrevLendingInterestnumber“前回逆日歩率(1日あたり・株価に対する比率)の上限。例: 0.01 = 1日あたり1%以下”minMarginRateMultipliernumber“増担保金徴収措置による最高料率倍率(marginRateMultiplier)の下限。措置が無い銘柄は対象外になる。例: 5 = 5倍以上”
and 32 more not listed here.
- get_benefitreads or searches
“銘柄コードで株主優待を1件取得する。sections で返す情報を選ぶ(不要なものは返さない)。 - basic (既定): 銘柄の基本情報。優待内容・権利確定日(vestingDates)・ 空クロス日(karaDates)・信用区分(lendingType)・制度信用の規制状態(systemLendingStatus: none/warn=注意喚起/prohibited=売禁)・増担保の最高…”
2 inputs, 1 required
codestringrequired“銘柄コード。例: "3397"”sectionsarray“返す情報の種類(配列)。省略時は ["basic"]。逆日歩履歴が欲しいときは ["basic","negativeInterests"]、在庫推移も含めるなら ["basic","negativeInterests","remainingHistories"]”
- estimate_cross_fee
“株主優待クロス取引(現物買い+信用売りを同時に建てて優待だけ受け取る手法)の手数料を試算する。 【対象範囲】 ・同一証券会社内で「買い」と「売り」の両方を建てるケースのみを計算する。証券会社をまたいだ 組み合わせ(例: 楽天で買ってカブコムで売る)は計算しない。 ・buyMethod: 'spot'=現物買い(sbi/gmo/rakuten/kabucom) / 'system_margin_t…”
12 inputs, 1 required
codestringrequired“銘柄コード。例: "7476"”unitsnumber“クロスする株数。省略時は minRequiredUnits(優待に必要な最小株数)を使う”pricenumber“実勢株価を上書きする場合に指定。省略時は取得済みの概算株価を使う”datestring“約定日 (YYYY-MM-DD)。省略時は「今注文したとき」の約定日を自動算出する(JST 15:30より前なら当日、以降なら翌営業日。土日祝ならさらに翌営業日まで繰り上げる)”sbiVipboolean“SBI大口優遇(建玉5億円以上)。既定false”sbiZeroRevolutionboolean“SBIゼロ革命(電子交付設定)。既定true”gmoVipboolean“GMO VIPプラン。既定false”rakutenCoursestring“楽天のコース。既定"zero"(ゼロコース)”rakutenVipboolean“楽天大口優遇。既定false”rakutenPreferentialRateboolean“楽天優遇金利適用。既定false”kabucomSorboolean“カブコムSOR(スマート・オーダー・ルーティング)。既定false”kabucomLargeLotstring“カブコム大口優遇ランク。既定"none"”
- calc_datescalculates or converts
“権利日を入力すると、クロス取引に必要な各種日付・日数を計算して返す。 【入力 vestingDate】 ・"2026-09-30" のような具体的な日付(その年で固定) ・"9月末" / "09" / "9"(月のみ)→ その月末で、次に到来する回 ・"9月20日" / "09-20" / "9/20" / "0920" → その日で、次に到来する回 【tradeDate】省略時は「今注文したと…”
2 inputs, 1 required
vestingDatestringrequired“権利日。例: "9月末" / "9月20日" / "2026-09-30"”tradeDatestring“約定日 (YYYY-MM-DD)。省略時は「今」から自動算出”
Each quoted sentence is the first sentence of the publisher’s own description. The kind of tool and the “changes data” mark are our AI model’s reading of that description, not something we tested: two differently worded runs had to agree, otherwise no label is shown, and nobody has checked them by hand. A tool without the “changes data” mark is described as only reading, searching or calculating, or the two runs did not agree. No tool was called. Read the publisher’s full description before relying on it. Inputs are the parameters in the tool's own input schema: name, declared type, whether it is required, and the first sentence of its description. Read 2026-10-23.
How well are its tools described?
Features #4 and #5
How clearly this server's own tool descriptions say what a tool does, and how consistent its tool list is. The first part is an AI model's yes/no reading of each description; the second part is counted. We do not turn it into a grade.
Descriptions
AI reading of each description
- Says what the tool does
- 100% of 4 tools
- Says what it returns
- 100% of 4 tools
- Says when to use it
- 67% of 3 tools
- Items covered per tool
- 3.7 of 4 on average
Counted from the listing
- Parameters with a description
- 100% of 73
- Tools with a description
- 100% of 4
- Typical description length
- 1,705 characters
The tool set
Counted from the listing
- Tools
- 4
- Size of the list
- about 9,735 tokens for an agent to load (characters ÷ 4)
- Naming
- 4 of 4 names use snake_case
AI reading: easy to mix up
No pair found.
The AI items cover 4 of 4 tools: for a tool where two differently worded runs disagreed, that item is left out. They were not checked by hand, and no tool was called. “Easy to mix up” means two tools whose names or descriptions overlap without saying how they differ; the AI found none. We do not rate whether the tool set is complete or whether side effects are spelled out, because our AI reading of those was not reliable enough.
How do I add it to my client?
Config from the registry entry
From the remote endpoint (Streamable HTTP)
We connected to this URL on 2026-10-23 (a read-only session: no tool was called).
Add to CursorAn install link in the format Cursor documents, holding the Cursor config below.
Claude Desktop or claude.ai
Settings → Connectors → Add custom connector, then paste: https://yutai-mcp.web.app/mcp
Cursor · .cursor/mcp.json in a project, or ~/.cursor/mcp.json
{
"mcpServers": {
"yutai-mcp": {
"url": "https://yutai-mcp.web.app/mcp"
}
}
}VS Code · .vscode/mcp.json
{
"servers": {
"yutai-mcp": {
"type": "http",
"url": "https://yutai-mcp.web.app/mcp"
}
}
}VS Code (command line) · Bash or zsh terminal (macOS, Linux)
code --add-mcp '{"name":"yutai-mcp","type":"http","url":"https://yutai-mcp.web.app/mcp"}'Claude Code
claude mcp add --transport http yutai-mcp https://yutai-mcp.web.app/mcp
Try it in the MCP Inspector · runs on your machine, opens in your browser · Node 22.19+
npx @modelcontextprotocol/inspector@2.11.0 --server-url https://yutai-mcp.web.app/mcp --transport http
- The server runs on the operator's infrastructure; it may ask you to sign in when you first connect.
- The MCP Inspector lists the server's tools, resources and prompts; a tool you call there runs for real.
Built from the server's registry entry with each client's documented format (checked 2026-10-14; the Cursor link and the VS Code command 2026-10-19; the MCP Inspector command 2026-10-21). Values in < > are yours to fill in; this page never contains a key. Where the server needs a setting the entry does not declare, it can still fail to start.
Does the registry listing match what we found?
Feature #6The registry verifies a package once, when it is published, and does not re-check it. A difference below is about the listing, not a judgement of the publisher.
| Registry says | We found | Result | Source · date |
|---|---|---|---|
| Remote endpoint yutai-mcp.web.app/mcp | Session opened | matches | our test · 2026-10-23 |
| No credential declared as required | Opened a session without any credential | matches | our test · 2026-10-23 |
Choosing
Record checks
Public records · not a safety rating1 of 2 record checks met · 7 do not apply
- Not ranked by downloads: a remote server publishes no download figure
- Not ranked by stars: no public GitHub repository
- MetRegistry entry is active and says how to run itActive, with a package or a remote address.
- Not metSource repository link opensThe registry entry gives no repository link.
- Does not applyRepository is not archivedNo public GitHub repository to read.
- Does not applyCode pushed to the repository in the 90 days before our checkNo public GitHub repository to read.
- Does not applyRepository publishes a security policy (SECURITY.md)No public GitHub repository to read.
- Does not applyPackage names its licence with a standard (SPDX) identifierRemote server: it ships no package.
- Does not applyThe version the registry lists can be installed and is not withdrawnRemote server: it ships no package.
- Does not applynpm package carries build provenance (attestation)Remote server: it ships no package.
- Does not applyNo known critical or high advisory in the package or its dependenciesRemote server: it ships no package.
Read from public records only: the registry entry, npm/PyPI, GitHub and advisory databases, checked 2026-10-22. No tool was called. Only “met” and “not met” are counted, so the total differs between servers; a check that does not apply or that we could not run is listed, never counted against it. It is not a safety rating. How each check works · Leaderboards
Common questions about app.web.yutai-mcp/yutai-mcp
Answered from the data aboveDoes app.web.yutai-mcp/yutai-mcp need an API key or sign-in?
It opened a session without any credential on 2026-10-23. The registry entry declares no required credential; no declaration is not a guarantee.
Has app.web.yutai-mcp/yutai-mcp been security tested?
Partly. 2 of the 14 checks that apply to it were exercised. We connected and read what the server declares, but did not call its tools: ProtocolProbe calls no server's tools for anything it publishes. This is our choice, not a block by the server. No security verdict is published before verification.
What can app.web.yutai-mcp/yutai-mcp do?
It lists 4 tools. In our AI model's reading of their descriptions (two runs had to agree, nobody checked it by hand), they include tools that read or search and calculate or convert. We did not call any tool, so this describes the text, not the behaviour.
Can app.web.yutai-mcp/yutai-mcp change or delete data?
None of its 4 tools is described as changing anything (our AI model's reading of the descriptions; nobody checked it by hand). We did not call any tool.
Found this page useful?
Anonymous · no sign-inA quick, anonymous reaction — no account, no email. One per kind from your browser. The tally updates when the page is next refreshed, and it is only a rough count, never a safety rating or a measured number of people.
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Active servers whose topic is also “finance-and-payments” and that have at least one tool of the same kind; most kinds in common first, then most GitHub stars. The topic and the tool kinds are an AI model's reading of the publishers' descriptions, not checked by hand. Similar is not a recommendation.
Compare with another server
Side by side: registry entry, our read-only session, the tools and the 18 classification fields. Same values as each page; no score.
Security testing
What did we test, and what did we leave out?
18 checks · features #1, #2
Not probed (we call no server's tools)
We connected and read what the server declares, but did not call its tools: ProtocolProbe calls no server's tools for anything it publishes. This is our choice, not a block by the server. No security score is given; a check we did not run is never counted as passed.
- Inventory: exercised
- Hidden instructions: exercised
- Real execution: not run · our policy
- Secret leak: not run · nothing to check it against
- Internal addresses: not run · our policy
- Unconfirmed changes: not run · our policy
- Bad input: not run · our policy
- Model requests: not run · nothing to check it against
- Sensitive questions: not run · nothing to check it against
- Folder boundary: not run · our policy
- Log leaks: not run · nothing to check it against
- Hidden content: not run · nothing to check it against
- Fake assistant turns: not applicable
- Token passthrough: not applicable
- Token audience: not applicable
- Sign-in redirect: not run · our policy
- Consent handling: not testable from outside
- Sign-in metadata: not applicable
2 exercised12 not run (reason given)4 not applicable
Each check ends in exactly one state: exercised, not run (with the reason), or not applicable (with the reason). 2 of the 14 checks that apply to it were exercised. We do not publish security-check outcomes for named servers.
- 1Inventory
tool-listReads the declared tools, resources and prompts.exercised - 2Hidden instructions
description-poisoningLooks for hidden instructions in tool descriptions.exercised
- 3Real execution
real-executionCalls a tool and checks what really happens.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy - 4Secret leak
canary-leakPlants a fake secret and checks whether it leaks.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against - 5Internal addresses
ssrfChecks whether a tool can be steered to internal addresses.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy - 6Unconfirmed changes
write-without-confirmationChecks whether tools that change data act without asking.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy - 7Bad input
error-handlingSends bad input and watches how the server answers.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy - 8Model requests
samplingChecks whether the server asks the client's model to act for it.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against - 9Sensitive questions
elicitation-sensitive-dataChecks whether the server asks users for sensitive data.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against - 10Folder boundary
root-boundaryChecks whether the server reaches outside the folders it was given.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy - 11Log leaks
logging-side-channelChecks whether log messages carry data they should not.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against - 12Hidden content
audience-hidingChecks resources that hide content from the user.This check needs content the server returns, and nothing was read or called.not run · nothing to check it against - 16Sign-in redirect
open-redirectChecks the sign-in redirect for abuse.Testing the sign-in redirect means sending probes to the operator's sign-in service, which we do not do.not run · our policy - 17Consent handling
confused-deputyChecks consent handling when one service acts for another.Depends on the operator's own consent screen, which differs per server and cannot be tested from outside.not testable from outside
- 13Fake assistant turns
fake-assistant-turnChecks prompts that pose as the assistant's own words.The server exposes no prompts.not applicable - 14Token passthrough
token-passthroughChecks whether the server forwards a user's token to other services.The server opened a session without sign-in, so there is no token flow to check.not applicable - 15Token audience
token-audience-validationChecks whether tokens meant for another service are accepted.The server opened a session without sign-in, so there is no token flow to check.not applicable - 18Sign-in metadata
oauth-url-schemeChecks the published sign-in metadata for unsafe URLs.No sign-in (OAuth) metadata is published, so there are no sign-in addresses to check.not applicable
Source: our own test, 2026-10-23, mcp-runtime-engine@0.1.0. Which checks count and why follows our published scoring model.
What happened during the test?
Feature #8
The steps in order, as the test record holds them.
- 0 msStarted a read-only session with the server's remote endpoint
- 1,337 msConnected after 0 redirects. No credential was sent or needed.
- Read the inventory: 4 tools, 0 resources, 0 prompts.
- 3,736 msFinished: 2 checks exercised.
Reference
How is it classified?
18 fields
One value per field, each with its source. Fields written by AI models are marked. A field with no value says why.
“Not stated” means the source did not state it; “does not apply” means it does not apply to this kind of server; “our limit” means our own lookup failed. A linked value opens the directory filtered to the same value.
Cite or correct this page
Sources and corrections
Suggested citation
ProtocolProbe. “app.web.yutai-mcp/yutai-mcp: MCP server record.” Data checked 2026-10-23. https://protocolprobe.com/mcp/servers/app.web.yutai-mcp/yutai-mcp
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As JSON: this record in the API · API documentation.
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