PluginBench
MCP Server
Active
MIT

REGON (Polish business register) MCP Server

io.github.SmartMobileHouse/regon-mcp

RepositoryRegistry

What is the REGON (Polish business register) MCP server?

Look up Polish businesses in the GUS REGON register (BIR1) by NIP, REGON, or KRS.

How to install REGON (Polish business register)

Copy-paste configuration for popular MCP clients.

transport: stdio
Config generated by PluginBench — verify against the source before use.
Environment / auth
  • REGON_API_KEY
    secret

    GUS BIR USER_KEY for live production data. Omit to use the public test key against the anonymized test database.

  • REGON_ENV

    Which GUS environment to query: 'test' (default) or 'prod'. Use 'prod' with a real USER_KEY.

Claude Desktop
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "regon-mcp": {
      "command": "uvx",
      "args": [
        "regon-mcp"
      ],
      "env": {
        "REGON_API_KEY": "<YOUR_REGON_API_KEY>",
        "REGON_ENV": "<YOUR_REGON_ENV>"
      }
    }
  }
}
Cursor
~/.cursor/mcp.json
{
  "mcpServers": {
    "regon-mcp": {
      "command": "uvx",
      "args": [
        "regon-mcp"
      ],
      "env": {
        "REGON_API_KEY": "<YOUR_REGON_API_KEY>",
        "REGON_ENV": "<YOUR_REGON_ENV>"
      }
    }
  }
}
Windsurf
~/.codeium/windsurf/mcp_config.json
{
  "mcpServers": {
    "regon-mcp": {
      "command": "uvx",
      "args": [
        "regon-mcp"
      ],
      "env": {
        "REGON_API_KEY": "<YOUR_REGON_API_KEY>",
        "REGON_ENV": "<YOUR_REGON_ENV>"
      }
    }
  }
}
VS Code
.vscode/mcp.json
{
  "servers": {
    "regon-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "regon-mcp"
      ],
      "env": {
        "REGON_API_KEY": "<YOUR_REGON_API_KEY>",
        "REGON_ENV": "<YOUR_REGON_ENV>"
      }
    }
  }
}
Claude Code
claude mcp add regon-mcp --env REGON_API_KEY=<YOUR_REGON_API_KEY> --env REGON_ENV=<YOUR_REGON_ENV> -- uvx regon-mcp

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