EU e-invoice validation, as a developer API.
Check whether an electronic invoice conforms to EN 16931 — the European standard behind France, Germany, Belgium, Poland and the 2030 ViDA mandate — with a single REST call. Structured JSON errors mapped to the official BR-* business rules. No enterprise sales call required.
Validates EU electronic invoices (Peppol, XRechnung, FatturaPA, etc.) and explains validation error codes, enabling AI coding agents to check invoice validity and get fixes before rejection.
Enables AI assistants to locally parse, validate, audit, explain, generate, and convert XRechnung and ZUGFeRD/Factur-X e-invoices using official rule sets, fully offline with no API keys required.
Reads and validates any European e-invoice a business receives — XRechnung, UBL, CII, ZUGFeRD/Factur-X PDF, Peppol BIS 3, FatturaPA, KSeF FA(3) — into canonical EN 16931 JSON with plain-language fix hints in EN/DE/PL/IT/FR, plus PDF, CSV and DATEV export. Nothing is stored; works without a key on a small daily quota.