README

This is the official repository for KSEF API Client for PHP: https://ksefapi.pl

Documentation

The documentation and samples are available at https://ksefapi.pl/rest-ksef-api-dokumentacja/

KSEF REST API

KSEF REST API serves as an integration interface for the Polish National e-Invoice System (KSeF), a central repository of structured electronic invoices managed by the Ministry of Finance.

Key functions of KSEF API

• Generating structured invoices compliant with KSeF.
• Sending invoices to KSeF in an interactive session.
• Sending a batch of invoices to KSeF in a batch session.
• Downloading an Official Confirmation of Receipt (UPO).
• Downloading a single invoice from KSeF.
• Searching and downloading invoices from KSeF (both cost and sales).
• Visualization of invoices in PDF or HTML format (including required QR codes).
• A unique black-box solution for deploying a dedicated KSeF gateway on your own platform.

License

This project is delivered under Apache License, Version 2.0: