KSeF 2.0 client library for Node.js (TypeScript)
TypeScript client for the Polish National e-Invoice System (KSeF) API
n8n community node for KSeF (Krajowy System e-Faktur) - Polish National e-Invoice System
KSeF authentication library — obtain and refresh JWT tokens
Node.js PDF generator for KSeF FA(1)/FA(2)/FA(3) invoices and UPO XML documents.
CLI do pobierania faktur i generowania PDF z KSeF API 2.0
Core SDK for the Ksefnik KSeF reconciliation engine (Polish e-Invoice matching)
KSeF HTTP adapter — authentication, challenge, sessions, invoice fetch (Polish e-Invoice API v2)
Command-line interface for Ksefnik — fetch KSeF invoices, reconcile with bank statements, run MCP server
Shared Zod schemas and types for the Ksefnik SDK (Polish KSeF e-Invoice reconciliation)
Krajowy System e-Faktur (KSeF) integration for Node-RED
Unofficial TypeScript/JavaScript client for Polish KSeF (Krajowy System e-Faktur) with FA(3) XML generation, submission helpers and QR support.
Offline KSeF mock server for testing and development without hitting the real Ministry of Finance API
Model Context Protocol server for Ksefnik — exposes KSeF reconciliation tools to Claude, Cursor and other MCP clients
n8n community node for Poland's KSeF (Krajowy System e-Faktur) e-invoicing API — query, download, and manage invoices with token or certificate authentication
KSeF FA(3) XML validator — XSD schema and semantic rules validation, works in Node and browser
Official TypeScript / Node.js SDK for the NaprawKSeF API (KSeF XML validation, FA(3) correction builder, webhooks). Zero runtime dependencies; works in Node ≥18, Bun, Deno and edge runtimes.
Shared TypeScript types for KSeFGPT projects (invoices, corrections, basic enums).
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Krajowy_System_e_Faktur
MCP server for the iFirma.pl Polish accounting API
Communication with the API of the digital platform for managing e-Invoicing in Poland (KSeF 2.0)
SDK for integrating with the Polish National e-Invoice System (KSeF).
Shared Rust types for KSeF services.
Krajowy System e-Faktur to platforma do wystawiania i otrzymywania faktur drogą elektroniczną.
A Ruby client for the Polish National e-Invoicing System (KSeF 2.0). Targets the FA(3) schema, supports token-based authentication, interactive sessions, and inbound invoice retrieval (metadata, XML, and visualisation). Pure Ruby with no Rails dependency.
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