Nipregon
FreeNot checkedLook up Polish companies from any AI assistant: registry data (KRS, REGON, CEIDG), VAT white list checks before payments, and financial statements of 4.4M busin
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Look up Polish companies from any AI assistant: registry data (KRS, REGON, CEIDG), VAT white list checks before payments, and financial statements of 4.4M businesses. Read-only tools backed by official public registers.
README

NIPRegon MCP Server
Look up Polish companies from any AI assistant: registry data (KRS, REGON, CEIDG), VAT white list checks before payments, and financial statements of 4.4M Polish businesses.
Backed by NIPRegon.pl: data sourced exclusively from official public registers (KRS, REGON, CEIDG, the Ministry of Finance VAT white list and financial statements filed with the National Court Register).
License: MIT Website MCP Registry
Install MCP Server Install in VS Code
Remote server (recommended)
One endpoint, zero install:
https://api.nipregon.pl/mcp
Generic config that works in most MCP clients:
{
"mcpServers": {
"nipregon": {
"type": "http",
"url": "https://api.nipregon.pl/mcp"
}
}
}
Claude Code
claude mcp add --transport http nipregon https://api.nipregon.pl/mcp
Cursor
Use the install button above, or add to ~/.cursor/mcp.json:
{
"mcpServers": {
"nipregon": { "url": "https://api.nipregon.pl/mcp" }
}
}
VS Code
Use the install button above, or add to mcp.json:
{
"servers": {
"nipregon": { "type": "http", "url": "https://api.nipregon.pl/mcp" }
}
}
Claude Desktop / claude.ai
Settings → Connectors → Add custom connector → paste
https://api.nipregon.pl/mcp.
Or, for any client without native streamable HTTP support:
{
"mcpServers": {
"nipregon": {
"command": "npx",
"args": ["mcp-remote", "https://api.nipregon.pl/mcp"]
}
}
}
Transport: streamable HTTP (JSON-RPC 2.0). Free tier: 100 tool calls/day/IP.
Try asking your assistant
- "Check the company with NIP 7791906082 before I sign this contract."
- "Find the company Eurocash and show its revenue for the last 5 years."
- "Is the bank account on this invoice really on the VAT white list of the supplier?"
Tools
- search_company — fuzzy search of Polish companies by name. Returns NIP,
KRS, city, status and a profile URL. Inputs:
query(string, min 3 chars),limit(1-10, default 5). Read-only. - get_company — full registry data of a Polish company by NIP: address,
legal form, status, KRS, REGON, PKD activity codes, board members, VAT
status. Inputs:
nip(string, 10 digits). Read-only. - get_financials — yearly financial statements filed with the National
Court Register: revenue, net profit, total assets, equity, liabilities.
Inputs:
nip. Read-only. - check_vat_whitelist — the company's VAT status in the Ministry of
Finance taxpayer register (white list) and, optionally, whether a bank
account number is on the company's white list. In Poland, paying more than
PLN 15k to an account outside the white list has tax consequences. Inputs:
nip, optionalaccount(26 digits). Read-only.
Example response (shortened):
{
"nip": "7822463563",
"statements": [
{ "year": 2024, "revenue": 24436276969.00, "net_profit": 184561157.00 },
{ "year": 2023, "revenue": 21382959713.00, "net_profit": 176885896.00 }
],
"source": "Sprawozdania finansowe KRS (RDF)"
}
Local stdio bridge (single file, zero dependencies)
For clients that only support stdio. Requires Node 18+. Download nipregon-mcp.mjs:
{
"mcpServers": {
"nipregon": {
"command": "node",
"args": ["/path/to/nipregon-mcp.mjs"],
"env": { "NIPREGON_API_KEY": "(optional, for higher limits)" }
}
}
}
REST API
The same data over plain REST — see the API docs (Polish). Self-service API keys with Free/Start/Pro/Scale plans, an interactive playground and Stripe billing.
Troubleshooting
- Client doesn't support remote MCP servers — use the
mcp-remotebridge (see Claude Desktop above) or the local stdio file. - HTTP 429 / limit message — the free daily limit (100 tool calls/IP) was reached; try tomorrow or get an API key at nipregon.pl/api.
- Company not found —
get_companyandget_financialscover companies registered in the National Court Register (KRS); financial data covers companies that filed statements electronically.
Data and privacy
The server is read-only and returns only data from official public registers. Sole-trader (JDG) records constitute personal data under GDPR: it is prohibited to use this server for creditworthiness scoring, automated assessment of natural persons or direct marketing towards sole traders. Queries are not logged beyond anonymous daily rate-limit counters. Details: terms of service (Polish).

🇵🇱 NIPRegon MCP Server (dokumentacja po polsku)
Sprawdzaj polskie firmy z poziomu dowolnego asystenta AI: dane rejestrowe (KRS, REGON, CEIDG), biała lista VAT przed przelewem i sprawozdania finansowe 4,4 mln polskich podmiotów.
Zasilane przez NIPRegon.pl: dane wyłącznie z oficjalnych rejestrów publicznych (KRS, REGON, CEIDG, wykaz podatników VAT Ministerstwa Finansów oraz sprawozdania finansowe złożone do KRS).
Serwer zdalny (zalecany)
Jeden endpoint, zero instalacji:
https://api.nipregon.pl/mcp
Uniwersalna konfiguracja dla większości klientów MCP:
{
"mcpServers": {
"nipregon": {
"type": "http",
"url": "https://api.nipregon.pl/mcp"
}
}
}
Claude Code:
claude mcp add --transport http nipregon https://api.nipregon.pl/mcp
Claude Desktop / claude.ai: Ustawienia → Konektory → Dodaj własny konektor
→ wklej https://api.nipregon.pl/mcp.
Transport: streamable HTTP (JSON-RPC 2.0). Darmowy limit: 100 wywołań narzędzi dziennie na adres IP. Wyższe limity: nipregon.pl/api.
Zapytaj swojego asystenta
- „Sprawdź firmę o NIP 7791906082, zanim podpiszę umowę."
- „Znajdź spółkę Eurocash i pokaż jej przychody z ostatnich 5 lat."
- „Czy rachunek z tej faktury jest na białej liście dostawcy?"
Narzędzia
- search_company — wyszukiwanie spółek po nazwie (fuzzy). Zwraca NIP, KRS, miasto, status i link do profilu.
- get_company — pełne dane rejestrowe spółki po NIP: adres, forma prawna, status, KRS, REGON, kody PKD, zarząd, status VAT.
- get_financials — roczne sprawozdania finansowe z KRS: przychody, zysk netto, aktywa, kapitał własny, zobowiązania.
- check_vat_whitelist — status VAT w wykazie podatników (biała lista KAS) i opcjonalnie weryfikacja, czy numer rachunku figuruje na białej liście podmiotu (istotne przed przelewem powyżej 15 tys. zł).
Dane i prywatność
Serwer jest tylko do odczytu i zwraca wyłącznie dane z oficjalnych rejestrów publicznych. Dane JDG stanowią dane osobowe (RODO): zakaz wykorzystania do scoringu kredytowego, automatycznej oceny osób fizycznych i marketingu bezpośredniego wobec JDG. Zapytania nie są logowane poza anonimowymi licznikami limitów dziennych. Szczegóły: regulamin.
License
MIT (this client and manifest). The NIPRegon.pl service itself is a separate, proprietary product of WEBY SOLUTION SP. Z O.O.
Install Nipregon in Claude Desktop, Claude Code & Cursor
unyly install nipregon-mcpInstalls into Claude Desktop, Claude Code, Cursor & VS Code — handles npx, uvx and build-from-source repos for you.
First time? Get the CLI: curl -fsSL https://unyly.org/install | sh
Or configure manually
Run in your terminal:
claude mcp add nipregon-mcp -- npx -y github:AMR-DEV-PS/nipregon-mcpFAQ
Is Nipregon MCP free?
Yes, Nipregon MCP is free — one-click install via Unyly at no cost.
Does Nipregon need an API key?
No, Nipregon runs without API keys or environment variables.
Is Nipregon hosted or self-hosted?
Self-hosted: the server runs locally on your machine via the install command above.
How do I install Nipregon in Claude Desktop, Claude Code or Cursor?
Open Nipregon on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.
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