CEIDG — Data Warehouse

Data on Polish sole proprietorships from CEIDG and Biznes.gov.pl. Requires free registration and a JWT key sent by email.

PL JWT key (email registration) REST/JSON

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About this API

CEIDG (Central Registration and Information on Business) is the registry of all sole proprietorships in Poland. The "Data Warehouse" API v2 exposes this data programmatically — business status, address, PKD codes, dates of starting/suspending/ending activity.

Frequently asked questions

Do I need an API key?

Yes. You need to register at dane.biznes.gov.pl — a JWT key arrives by email within a few minutes, registration is free.

What data does this API return?

Business status (active/suspended/deregistered), address, PKD codes, tax form, and change history — from a tax ID (NIP) or entry number.

Can this API be called directly from a browser?

Even if the API allowed it, a JWT key shouldn't end up in frontend code visible to every visitor — such requests should be made from your own backend.

Who runs this API?

Poland's Ministry of Development and Technology, via the Biznes.gov.pl portal. Full documentation is available at dane.biznes.gov.pl.