Local, on-device Model Context Protocol server for EN 16931 e-invoices — validate, fix, convert, generate and explain XRechnung/ZUGFeRD/Peppol from an AI agent, with nothing uploaded

n8n node for InvoiceHub — validate, generate, convert and read EU e-invoices (UBL 2.1, UN/CEFACT CII, XRechnung 3.0, Factur-X) against the official EN 16931 rules.

Validate and generate XRechnung / EN 16931 e-invoices from the command line

Friendly, multilingual EN 16931 / UN-CEFACT e-invoicing code lists (units, VAT categories, payment means, invoice types, countries, currencies, Peppol EAS schemes) with curated labels and explanatory hints.

Canonical EN 16931 invoice model with parsers and renderers for ebInterface 6.1, PEPPOL BIS 3.0, Factur-X 1.0, ZUGFeRD 2.3, and XRechnung 3.0 (CII + UBL)

The Facturion simplified-JSON invoice data model: the EN 16931 simplified-invoice JSON Schema, strict + partial validators, derived TypeScript types, and the canonical net/total computation helpers.

Validate EU e-invoices (Peppol BIS, EN 16931, XRechnung, Factur-X, UBL, CII) in CI/CD — with a plain-English fix per error. Backed by eleata.io.

EU e-invoicing API client — validate, generate, convert and parse UBL 2.1, UN/CEFACT CII, XRechnung 3.0 and Factur-X against the official EN 16931 rules.

Free, open-source EU e-invoice validator. Detect formats and validate against EN 16931 core rules.

Validate and generate EN 16931 / XRechnung e-invoices in pure TypeScript. UBL parsing, business-rule validation (BR, BR-CO, BR-DE), and compliant XML generation.

Canonical EN 16931 invoice model, money types, and validation primitives

Thin client for the FakturWire EU e-invoicing API — validate and convert invoices to Peppol BIS 3.0, XRechnung and Factur-X (EN 16931).

Official TypeScript SDK for Invoice Navigator — EU e-invoicing compliance API. Validate, remediate, and certify invoices against EN 16931, Peppol BIS 3.0, XRechnung, and ZUGFeRD.

Shared XML serialization helpers for EN 16931-based invoice formats

Generate and parse Peppol BIS Billing 3.0 (UBL 2.1, EN 16931) invoices and credit notes. Framework-agnostic, typed, zero runtime config.

Factur-X and Order-X generation library for European e-invoicing standard

Kontor MCP — bundled standards artifacts (XSDs, compiled Schematron, codelists) and rule knowledge base

Declarative, component-based PDF generation in pure TypeScript - Flutter-style components, real AFM font metrics, a hand-rolled PDF writer. No headless browser, no Java.

Liasse Factur-X module — generate the EN 16931 CII XML and embed it into a PDF to produce a Factur-X invoice (TS happy-path).

Validation orchestration for EN 16931-based invoices, with pluggable XSD/Schematron support