REGON (Polish business register) for Claude Code

io.github.smartmobilehouse/regon-mcp

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

client:Claude Code transport:stdio runtime:pypi

Install REGON (Polish business register) in Claude Code

run in your project directory

claude mcp add regon-mcp -e REGON_API_KEY=<REGON_API_KEY> -e REGON_ENV=<REGON_ENV> -- uvx regon-mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs