What data does the Poland KYB API return?

For each Polish company in the KRS register: legal name, KRS number, NIP (tax ID), REGON (statistical ID), legal form, PKD activity code, registered address and voivodeship, share capital (PLN) and registration date. Coverage is ~732K active legal entities. Directors/officers, insolvency (KRZ) and beneficial ownership (CRBR) are not yet included; sole traders (CEIDG) are separate.

How do I look up a Polish company by NIP or KRS number?

Call GET /companies/search?country=PL with company_number= for an exact match, or name= for a fuzzy search. The response includes the NIP, so you can cross-reference. Then GET /companies/{id}?country=PL returns the full record.

Is the KRS data licensed for commercial use?

Yes. Polish KRS company data is public-sector information reusable under the Polish Open Data Act of 2021 (Dz.U. 2021 poz. 1641). Prometiam attributes the source (Krajowy Rejestr Sądowy, Ministry of Justice) in API responses.

How much does the Poland KYB API cost?

Poland is included in every Prometiam tier at no upcharge: Free (1,000 calls/month), Starter (€9.99/mo, 10,000), Professional (€29.99/mo, 100,000 with sanctions screening), Scale (€99.99/mo, 1,000,000).

Poland KYB API — verify Polish companies via the KRS register

Prometiam exposes the Polish Krajowy Rejestr Sądowy (KRS), the National Court Register, as a REST API so you can verify a Polish company from one endpoint and one key. Coverage is ~732K active companies at company level.

What you can look up

KRS number, NIP (tax id) and REGON (statistical id)
Registered legal name and legal form (sp. z o.o., S.A., and others)
PKD activity code, registered address, and registration date
Share capital in PLN

Query Poland with ?country=PL and search by name or resolve by KRS/NIP. Every tier includes all six countries; the free tier is 1,000 calls/month with no credit card.

Honest scope

Poland is currently company-level only. Directors/officers, KRZ insolvency, and CRBR beneficial ownership are not yet included, and CEIDG sole traders are a separate register. For sanctions, the same key screens Polish counterparties against sanctions + US export-control lists (44,000+ entities).

Frequently asked questions

What data does the Poland KYB API return?: For each Polish company in the KRS register: legal name, KRS number, NIP (tax ID), REGON (statistical ID), legal form, PKD activity code, registered address and voivodeship, share capital (PLN) and registration date. Coverage is ~732K active legal entities. Directors/officers, insolvency (KRZ) and beneficial ownership (CRBR) are not yet included; sole traders (CEIDG) are separate.
How do I look up a Polish company by NIP or KRS number?: Call GET /companies/search?country=PL with company_number=<10-digit KRS> for an exact match, or name=<company name> for a fuzzy search. The response includes the NIP, so you can cross-reference. Then GET /companies/{id}?country=PL returns the full record.
Is the KRS data licensed for commercial use?: Yes. Polish KRS company data is public-sector information reusable under the Polish Open Data Act of 2021 (Dz.U. 2021 poz. 1641). Prometiam attributes the source (Krajowy Rejestr Sądowy, Ministry of Justice) in API responses.
How much does the Poland KYB API cost?: Poland is included in every Prometiam tier at no upcharge: Free (1,000 calls/month), Starter (€9.99/mo, 10,000), Professional (€29.99/mo, 100,000 with sanctions screening), Scale (€99.99/mo, 1,000,000).