We would like to inform you that a test API has been made available to all people interested in the services offered by nip24.pl (at: https://www.nip24.pl/api-test), thanks to which it is possible to test all the main functionalities of the portal without having to create an account. The test API allows you to test the following features:
- isActive – function to check the current status of the company,
- getInvoiceData – function for downloading basic company data enabling correct invoicing,
- getAllData – function for downloading detailed company data,
- getVIESData – function for confirming the activity of the EU VAT number assigned by any of the European Union Member States (VIES system),
- getVATStatus – function for checking the status of an entity in the VAT register available on the Tax Portal of the Ministry of Finance,
How to configure shared programming libraries and Excel add-in for cooperation with the test API was posted on the website: Test API.
If you have any questions or technical problems, please contact Customer Service Office.
English (UK) 
Polski