PlugRail Corporate MCP MCP server

This MCP server enables agents to search for Japanese corporate entities by corporate number, name, or address. It processes public data released by the National Tax Agency of Japan to provide accurate business information.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by PlugRail

MCP endpoint (Streamable HTTP)

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

Vendor documentation

What you can do with it

Search for Japanese corporations by corporate number
Look up company names and addresses
Verify business entity details using official data

Tools advertised by the last live check:

search_corporate_by_number
search_corporate_by_name
search_corporate_by_address
lookup_corporate
verify_invoice_number
company_profile

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

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

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add plugrail-corporate-mcp --url https://jp-corporate.plugrail.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable plugrail-corporate-mcp in your MCP settings.

Cursor configuration

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

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "plugrail-corporate-mcp": {
      "type": "streamableHttp",
      "url": "https://jp-corporate.plugrail.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start plugrail-corporate-mcp and inspect its tools.

VS Code configuration

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

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

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

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

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

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

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

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