Official PHP SDK for the NaprawKSeF API (KSeF, FA(3), webhooks). Zero runtime dependencies, PSR-18 compatible.
KSeFSigner is an unofficial .NET 8 workaround for signing XML documents (AuthTokenRequest) in XAdES-BES format for KSeF API 2.0 (Polish National e-Invoicing System). Addresses the ECDSA-SHA256 support gap in .NET 8. Works with UiPath Windows projects
Model Context Protocol (MCP) server for Polish Electronic Invoicing (KSeF / FA(2)). Provides tools to validate, generate, and explore API specifications for KSeF interoperability.
Universal REST API gateway for Poland's KSeF (National e-Invoice System), wrapping the official Ministry of Finance C# SDK
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