REGON (Polish business register)

io.github.SmartMobileHouse/regon-mcp

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

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "regon-mcp": {
      "command": "uvx",
      "args": [
        "regon-mcp"
      ],
      "env": {
        "REGON_API_KEY": "<your REGON_API_KEY>"
      }
    }
  }
}
Environment variables
  • REGON_API_KEYsecretGUS BIR USER_KEY for live production data. Omit to use the public test key against the anonymized test database.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.2.3
Registry
active
Published
11/4/2026

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Add the badge to your site

Show visitors that REGON (Polish business register) is listed here — it’s also the link we check for a free listing.

REGON (Polish business register) — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/io-github-smartmobilehouse-regon-mcp?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="REGON (Polish business register) — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![REGON (Polish business register) — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-smartmobilehouse-regon-mcp?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.