REGON BIR1 API
SOAP web service (BIR1, Baza Internetowa REGON) for searching the REGON business register by REGON, NIP or KRS; free, user key issued by email.
SOAP web service (BIR1, Baza Internetowa REGON) for searching the REGON business register by REGON, NIP or KRS; free, user key issued by email.
Every API here is available over the APIs.io API and to AI agents over MCP.