REGON (Polish business register) MCP Server
by smartmobilehouseio.github.SmartMobileHouse/regon-mcpv0.2.2
Look up Polish businesses in the GUS REGON register (BIR1) by NIP, REGON, or KRS.
context tax
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security
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cold start
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freshness
Maintained2mo ago
Install REGON (Polish business register) MCP server
Install in Claude Code
claude mcp add regon -e REGON_API_KEY='<regon-api-key>' -- uvx regon-mcpInstall in Cursor
{
"mcpServers": {
"regon": {
"command": "uvx",
"args": [
"regon-mcp"
],
"env": {
"REGON_API_KEY": "<regon-api-key>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"regon": {
"command": "uvx",
"args": [
"regon-mcp"
],
"env": {
"REGON_API_KEY": "<regon-api-key>"
}
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"regon": {
"type": "stdio",
"command": "uvx",
"args": [
"regon-mcp"
],
"env": {
"REGON_API_KEY": "<regon-api-key>"
}
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"regon": {
"command": "uvx",
"args": [
"regon-mcp"
],
"env": {
"REGON_API_KEY": "<regon-api-key>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| REGON_API_KEY | — | yes | 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. |
Freshness
Maintained — last maintenance signal 2mo ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-08-10 · 2mo ago · GitHub
Latest release
2026-08-10 · 2mo ago · GitHub · v0.2.0
Package published
no data · npm/PyPI
Registry entry updated
2026-08-10 · 2mo ago · official registry · v0.2.2
FAQ
›How do I install the REGON (Polish business register) MCP server in Claude Code?
Run: claude mcp add regon -e REGON_API_KEY='<regon-api-key>' -- uvx regon-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does REGON (Polish business register) require an API key?
Yes. It expects REGON_API_KEY, of which 1 is a secret.
›Can I use REGON (Polish business register) as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is REGON (Polish business register) in the official MCP registry?
Yes, as io.github.SmartMobileHouse/regon-mcp.