How do I install PlugRail JP Corporate?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does PlugRail JP Corporate need an API key?

No required environment variable is listed on this record.

What transport does PlugRail JP Corporate use?

PlugRail JP Corporate is reached over HTTP.

PlugRail JP Corporate

by dev.plugrail

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

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Server URL

https://jp-corporate.plugrail.dev/mcp

Provider

Add in Claude

Claude opens with the name and URL filled in. You still confirm it there.

Claude Code

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

Run in a terminal.

Claude Desktop

{
  "mcpServers": {
    "dev.plugrail-jp-corporate": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://jp-corporate.plugrail.dev/mcp"
      ]
    }
  }
}

claude_desktop_config.json

Step-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Related MCP

Related skills

View all

Questions

How do I install PlugRail JP Corporate?: Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.
Does PlugRail JP Corporate need an API key?: No required environment variable is listed on this record.
What transport does PlugRail JP Corporate use?: PlugRail JP Corporate is reached over HTTP.
When was PlugRail JP Corporate last checked?: Last checked 2026-10-16. Search Japanese corporations and verify invoice numbers using official National Tax Agency data.

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.