InvoiceXML

Exposes the InvoiceXML API to create, validate, convert, and extract compliant e-invoices across European standards like Factur-X, ZUGFeRD, XRechnung, UBL, and Peppol BIS Billing 3.0. The same .NET codebase runs in two modes: self-hosted with a single API key or as a hosted service with OAuth 2.1 and dynamic client registration. You get typed tools for invoice operations without handling the XML schema complexity yourself. Reach for this when you need AI agents to generate or process e-invoices that meet regulatory requirements in France, Germany, or across PEPPOL networks. The architecture keeps auth cleanly separated so switching between deployment modes is just a config change.