ksefapi/client

KSEF API Client for PHP

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pkg:composer/ksefapi/client

2.0.2 2026-02-07 00:12 UTC

This package is auto-updated.

Last update: 2026-02-07 00:13:26 UTC


README

pl

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:

License (Apache 2.0)