About

What the tool does not do

• It does not create invoices from scratch. convert only turns an Invoify export into one, and only for VAT-exempt sellers.
• It does not check an invoice against the XSD schema. KSeF does that on submission.
• It does not show purchase invoices, only issued ones.
• It does not support certificate login (XAdES) or batch sessions.

Development

All code lives in cmd/ksef/ as a single main package and uses only the Go standard library.

An invoice has one shared model (invoice.go) that checks the data and produces the FA(3) XML. Invoify is just one reader that fills that model (invoify.go). A new field is added once, in the model and the template, and every reader can use it.

go test ./...
go run ./cmd/ksef selfcheck

The tests run the full login, submission, listing and download flow against a local, fake KSeF server.

License

MIT License. See LICENSE for details.

Author

Piotr Krzysztof Lis, piotrkrzysztof.dev. The source code is on Codeberg, with a mirror on GitHub.