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Factur x France
by Nex AI
Generate and validate Factur-X/ZUGFeRD hybrid e-invoices compliant with the French EN16931 mandate.
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See it in action
You say
Generate a Factur-X compliant hybrid PDF invoice from the attached JSON data for my client in Paris, and verify that the VAT math is correct.
Your agent does
Factur-X invoice generated successfully: INV-2024-001.pdf
- PDF/A-3 metadata validated
- EN16931 XML (CII) embedded as factur-x.xml
- Total HT: 1,200.00 EUR | VAT (20%): 240.00 EUR | Total TTC: 1,440.00 EUR Calculation check: PASSED. Valid for French e-invoicing mandate.
What you get
About this skill
Advanced Factur-X & ZUGFeRD E-Invoicing
Modernize your billing stack for the French e-invoicing mandate with this professional-grade Factur-X engine. This skill automates the creation and validation of hybrid electronic invoices: a human-readable PDF/A-3 that carries a machine-readable EN16931-compliant XML file embedded within it.
What it does
- Generation: Produces valid PDF/A-3 files with embedded
factur-x.xml(CII) using your structured JSON data. - Validation: Performs deep inspection of both PDF metadata (XMP extension schemas) and XML content to ensure EN16931 compliance.
- Extraction: Automatically parses incoming Factur-X PDFs to extract structured data for seamless ERP or accounting integration.
- Arithmetic Guardrails: Built-in logic cross-checks VAT rates, line items, and totals to prevent invalid invoice issuance.
Why this is better than manual prompting
Generating a Factur-X invoice requires precise PDF/A-3 metadata, specific XML namespaces (urn:cen.eu:en16931:2017), and exact attachment relationships (AFRelationship) that general LLMs cannot produce reliably on their own. This skill provides the specialized Python tooling and validation logic necessary to meet legal requirements for the upcoming French 2026-2027 rollout without relying on expensive third-party APIs.
Supported Standards
- Factur-X / ZUGFeRD (Hybrid Invoice Standard)
- EN16931 (Cross Industry Invoice)
- PDF/A-3 (ISO 19005-3)
- French E-invoicing mandate requirements (SIREN/TVA integration)
Changelog
- v1.1LatestJul 13, 2026
Refreshed audited build: manifest, README, worked examples and security declarations cleaned up.
- v1.0Jun 15, 2026
Initial release
How to install
Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.
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Creator
Founder of Nex AI. I build production-grade Claude Skills from systems that actually run: multi-tenant SaaS, Telegram agents, Raspberry Pi infrastructure, 3D multiplayer rooms. Every skill ships battle-tested patterns, not theory. 33+ open source skills published, commercial catalog growing.
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