Is Jp Corporate free?

Yes, Jp Corporate is free to use.

How do I install Jp Corporate?

Jp Corporate is a remote plugin. You do not need to install anything locally. Add the server URL to your AI app's MCP configuration and you are ready to go.

Is Jp Corporate safe to use?

Yes. Jp Corporate passed MCP Marketplace's automated security scan with a score of 9.8/10 (low risk). Every server on MCP Marketplace is security-scanned before it's listed; see the full security report on this page for the findings and permissions.

What AI apps work with Jp Corporate?

Jp Corporate uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

Back to Browse

Jp Corporate MCP Server

by Plugrail

Developer ToolsLow Risk9.8MCP RegistryRemote

Free

Server data from the Official MCP Registry

Japanese corporate number lookup using official National Tax Agency public data.

About

Japanese corporate number lookup using official National Tax Agency public data.

Remote endpoints: streamable-http: https://jp-corporate.plugrail.dev/mcp

Security Report

9.8

Low Risk9.8Low Risk

Valid MCP server (2 strong, 1 medium validity signals). 1 known CVE in dependencies Imported from the Official MCP Registry. Trust signals: trusted author (3/3 approved).

6 tools verified · Open access · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Found in Source Code

Found by scanning the linked source code. This listing connects to a hosted endpoint, so none of this runs on your machine: it describes what the server software does where it is hosted.

HTTP Network Access

Connects to external APIs or services over the internet.

How to Connect

Remote Plugin

No local installation needed. Your AI client connects to the remote endpoint directly.

Add this to your MCP configuration to connect:

{
  "mcpServers": {
    "dev-plugrail-jp-corporate": {
      "url": "https://jp-corporate.plugrail.dev/mcp"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

plugrail

A collection of MCP servers that connect to Japanese public data. The name alone does not describe the project, so plugrail is not related to railways or railway services.

Live servers

Server	MCP endpoint	Tools	Status
jp-calendar	`https://jp-calendar.plugrail.dev/mcp`	`is_holiday`, `list_holidays`, `business_days_between`, `add_business_days`	Live

Connect

See the jp-calendar connection guide.

Self-hosting

In packages/servers/jp-calendar/, copy wrangler.example.jsonc to wrangler.jsonc and fill in your Cloudflare resource IDs.
Create the D1 database and KV namespace referenced by that configuration.
Run pnpm --filter @plugrail/jp-calendar deploy.

The self-hosted server runs independently. Authentication, rate limiting, and usage metering are features of the hosted service only.

Architecture

MCP client
    |
    v
jp-calendar Worker --> Cloudflare D1 (holiday data)
                   --> Cloudflare KV (cached data)

Sources and disclaimer

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

Source: Adapted from the Cabinet Office "National Holidays" page (https://www8.cao.go.jp/chosei/shukujitsu/gaiyou.html)

Contributing

Issues and pull requests are welcome. Please include enough context to reproduce a problem or explain a proposed change.

License

MIT. See LICENSE.

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4.8

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