Check a Polish company by API: the KRS open API

National Court Register (KRS) · read from the national register · checked 11 November 2026

The official route

The Ministry of Justice publishes an open API for the National Court Register (KRS). One request returns the current extract of a company:

https://api-krs.ms.gov.pl/api/krs/OdpisAktualny/{KRS}?rejestr=P&format=json

The dataset page on dane.gov.pl (read 2026-11-07) says the API needs no token and has no download limits, and that the data is in the public domain (licence field: CC0 1.0). The extract holds the name, legal form, seat, REGON and NIP, PKD activity, management board, supervisory board, proxies and shareholders. Its section 6 (Dział 6) lists liquidation, bankruptcy and restructuring entries. The API masks people's names itself, as a first letter plus asterisks.

Where it gets hard

The extract is fetched by KRS number. Starting from a NIP or REGON takes a second source, the Ministry of Finance's VAT white list, and that allows 100 searches a day.
You pass the register (rejestr=P or S) with the number. A deleted company answers HTTP 204.
Three things have no open API: the financial-statements repository, the beneficial-owners register (CRBR) and the debtors register (KRZ). The Ministry's FAQ (read 2026-11-07) says it is aware an API for KRZ is needed.
Sole traders are not in KRS.
An amendment to the KRS Act, in force since 29 November 2025, penalises getting register data through web services without authorisation. We read it as being about a separate service for public bodies. One Polish commentator calls the wording unclear.

One call

{"query": "ORLEN S.A.", "country": "PL"}

Send this to POST https://api.boscolabs.dev/v1/counterparty-check. KRS 0000028860 as the query gets the same company without a name search.

Check	Source for this country
Register status	KRS open API, read live
Insolvency	KRS entries: bankruptcy, restructuring, liquidation, with court and case number
People on sanctions lists	Only names the register shows in full; masked names are not screened
Recent accounts	ESEF annual reports, listed companies only
VAT number	VIES
Company on sanctions lists	OFAC, UN, UK, EU and US export lists
LEI status	GLEIF

$0.05 per company checked, empty and failed calls are free.

What we do not cover

Beneficial owners and the debtors register.
Accounts of unlisted Polish companies.
Receivers, trustees and liquidators are not output.
Companies deleted from the register: we only say they are not in the current register.

Sources

Get a key: $5.00 free, no card Try the planner without a key

Other countries

Czech Republic · Estonia · Finland · France · Ireland · Latvia · Norway · United Kingdom · Denmark · Germany · Netherlands · Austria · Belgium · Spain · Sweden