How to Supplement Invoices with Additional Data Using Stripe Metadata
2026-04-21
Some KSeF-required fields like GTU code, PKWiU symbol or buyer contact details have no direct Stripe equivalent. Learn how to set their values via metadata.
S2K Tutorials
Step-by-step guides — Stripe to KSeF integration and invoice automation
How to Use S2K
2026-03-22
This tutorial guides you through S2K app configuration and shows how to send invoices to KSeF, both manually and fully automatically.
How to Install the S2K Application on Your Stripe Account
2026-02-21
We want S2K installation and KSeF authentication to be as simple as possible for our users. Here's the first guide describing our app installation.
