PlugRail JP Corporate

Name: PlugRail JP Corporate
Author: plugrail

by plugrailversion 0.1.1i★ –iRuns in the cloud

Registry namedev.plugrail/jp-corporate

Install

Overview

Description from the maker (original English)

Search Japanese corporations and verify invoice numbers using official National Tax Agency data.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Accounting, finance & tax
You need to fill in: Authorization

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http jp-corporate https://jp-corporate.plugrail.dev/mcp --header 'Authorization: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "jp-corporate": {
      "url": "https://jp-corporate.plugrail.dev/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "jp-corporate": {
      "type": "http",
      "url": "https://jp-corporate.plugrail.dev/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

Authorization secret HTTP header

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain plugrail.dev (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Accounting, finance & taxi

More stars than 0% of the other 1730 servers in this category
Published to the registry more recently than 56% of the other 1730 servers in this category
Basic checks equal to or better than 100% of the other 1730 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is PlugRail JP Corporate safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: Authorization

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.1) reached the registry 31 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Finance Toolkit, SolidInvoice, Korea Tax Calculator

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Finance Toolkit

by JerBouma

500+ transparent financial methods calculated from raw statements, not third-party endpoints.

Computer or cloud★ 5,496MITUpdated today

Install

SolidInvoice

by SolidInvoice

Create and send invoices and quotes, manage clients, and track payments in SolidInvoice.

Runs in the cloud★ 981MITUpdated 8 days ago

Install

Korea Tax Calculator

by UpstageAI

Korean tax calculation and tax-audit judgment MCP: 96 tools with statutory citations.

Runs on your computer★ 97MITUpdated yesterday

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

PlugRail JP Corporate

English | 日本語

English

MCP server for searching Japanese corporations and verifying invoice registration numbers, built on official Japan National Tax Agency (NTA) public data.

What it can do

Tool	What it does
`search_corporate_by_number`	Find one corporation by its 13-digit corporate number.
`search_corporate_by_name`	Search by 2-digit prefecture code + company-name prefix (up to 20 results).
`search_corporate_by_address`	Search by 2-digit prefecture code + address prefix (up to 20 results).
`lookup_corporate`	Exact lookup by corporate number, or candidate search by name/address. A name alone never resolves to a single company; candidates are returned with per-evidence scores.
`verify_invoice_number`	Check a qualified invoice issuer number (T + 13 digits): registered / cancelled / expired with dates. A "not found" result is reported as "not published or not yet recorded" — never as "invalid" or "non-existent".
`company_profile`	Company profile (basic info, subsidies, certifications, finance) by 13-digit corporate number. Each section carries its source, freshness, and missing-reason; partial failures return what was fetched plus what is missing.

Every successful response carries its data source and a disclaimer; error responses carry the disclaimer. This service is not an official service of the NTA or any other government body, and its responses do not represent their official views.

Usage

The server is a hosted Streamable HTTP endpoint. You can connect without an API key and use the free tier; a Pro plan API key removes the monthly cap.

# Free tier (no key)

claude mcp add --transport http jp-corporate https://jp-corporate.plugrail.dev/mcp

Pro plan

claude mcp add --transport http jp-corporate https://jp-corporate.plugrail.dev/mcp \ --header "Authorization: Bearer "

Then ask things like "look up corporate number 7000012050002" or "find companies in Tokyo starting with 渋谷".

Limits

Free tier: all tools, up to 100 tool calls per calendar month (JST), no credit card. Counted per IP address without a key. tools/list is not counted. The 101st call returns an error pointing to https://plugrail.dev/pricing.
Rate limits per minute: 10 without a key, 600 on Pro. Exceeding it returns rate_limited (HTTP 429) with a retry hint.
Name/address search is prefix match only (no nationwide fuzzy search), max 20 results per call with cursor pagination.
Some company_profile sections from gBizINFO may be returned as missing with a reason; the response always states what is missing.

Pricing

Free: 100 tool calls / month (calendar month, JST), no API key or credit card required.
Pro: ¥9,800 / month, tax-inclusive (total display including consumption-tax equivalent; tax-exempt operator). No monthly cap.
No free trial of Pro (billing starts in the first month). Details: https://plugrail.dev/pricing

Sources and disclaimer

This is not an official service of the National Tax Agency or any other Japanese government body. Information provided does not represent their official views and is not guaranteed by them.

国税庁法人番号公表サイト (https://www.houjin-bangou.nta.go.jp/) を加工して作成
国税庁インボイス制度適格請求書発行事業者公表サイト (https://www.invoice-kohyo.nta.go.jp/) を加工して作成

Support

Contact: support@plugrail.dev (email only; replies within 2 business days, Japanese or English; best effort, no SLA). Terms: https://plugrail.dev/legal/terms. Privacy: see PRIVACY.md.

License

MIT. See LICENSE.

日本語

国税庁の公式公開データを基に、日本の法人検索とインボイス登録番号の照合を行う MCP サーバーです。

できること

ツール	内容
`search_corporate_by_number`	法人番号 (13桁) で1件検索
`search_corporate_by_name`	都道府県コード2桁 + 法人名の接頭辞で検索 (最大20件)
`search_corporate_by_address`	都道府県コード2桁 + 所在地の接頭辞で検索 (最大20件)
`lookup_corporate`	法人番号の確定照会と名称・所在地の候補探索を分離。名称だけでは断定せず複数候補と根拠別スコアを返す
`verify_invoice_number`	適格請求書発行事業者番号 (T+13桁) の登録・取消・失効を日付付きで照合。未発見は「非掲載または未収録」と明示し「無効」「不存在」と断定しない
`company_profile`	法人番号 (13桁) で基本情報・補助金・届出・財務のプロファイル。各領域の出典・鮮度・欠損を保持し、部分障害時は取得済みと欠損を同時に返す

成功レスポンスには必ず出典と免責文言が付きます。本サービスは国税庁その他の行政機関の公式サービスではなく、応答はそれらの公式見解を示すものではありません。

使い方

ホスト型 Streamable HTTP エンドポイントです。API キーなしで接続して無料枠を使えます。Pro プランの API キーを付けると月間上限がなくなります。

# 無料枠（キーなし）

claude mcp add --transport http jp-corporate https://jp-corporate.plugrail.dev/mcp

Pro プラン

claude mcp add --transport http jp-corporate https://jp-corporate.plugrail.dev/mcp \ --header "Authorization: Bearer "

「法人番号 7000012050002 の会社を調べて」「東京都で『渋谷』から始まる会社を探して」のように話しかけると対応するツールが呼ばれます。

制限

無料枠: 全ツール利用可・月100回まで（暦月・日本時間）・カード不要。キーなしは IP アドレス単位で数えます。tools/list は数えません。101回目は https://plugrail.dev/pricing への案内付きエラーになります。
分間レート制限: キーなし 10回/分、Pro 600回/分。超えると rate_limited（HTTP 429）と再試行の目安を返します。
名称・所在地検索は接頭辞一致のみ (全国ファジー検索なし)。1回最大20件、カーソルページング。
company_profile の gBizINFO 由来の領域は、取得できない場合に理由付きで missing を返します。

料金

無料: 月100回まで（暦月・日本時間）。API キー・カード不要。
Pro: 月額 9,800円（税込。消費税相当額を含む総額表示。免税事業者）。月間上限なし。
Pro の無料トライアルはありません（初月から課金）。詳細: https://plugrail.dev/pricing

出典・免責

本サービスは国税庁その他の行政機関の公式サービスではありません。提供情報はそれらの公式見解を示すものではなく、正確性を保証するものでもありません。

国税庁法人番号公表サイト (https://www.houjin-bangou.nta.go.jp/) を加工して作成
国税庁インボイス制度適格請求書発行事業者公表サイト (https://www.invoice-kohyo.nta.go.jp/) を加工して作成

サポート

連絡先: support@plugrail.dev（メールのみ・営業日48時間以内・日英対応・ベストエフォートで SLA なし）。利用規約: https://plugrail.dev/legal/terms 。プライバシー: PRIVACY.md。

ライセンス

MIT。LICENSE 参照。

PlugRail JP Corporate

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Accounting, finance & taxi

Common questions

Alternatives

Finance Toolkit

SolidInvoice

Korea Tax Calculator

README from the maker

PlugRail JP Corporate

English

What it can do

Usage

Pro plan

Limits

Pricing

Sources and disclaimer

Support

License

日本語

できること

使い方

Pro プラン

制限

料金

出典・免責

サポート

ライセンス