xmlvalid
xmlvalid checks XML documents and electronic invoices the way the receiving systems do, and tells you what to fix.
Ask your AI to validate a document you paste, attach or link, against a schema from the catalog or "auto", which picks the e-invoice profile the document declares. xmlvalid runs the schema check (XSD 1.0, DTD, RelaxNG) with libxml2 and then the official Schematron business rules: EN 16931, Peppol BIS 3 and PINT, XRechnung, ZUGFeRD / Factur-X, France CTC 2026, and national formats such as FatturaPA, KSeF, ISDOC, Finvoice, ebInterface, OIOUBL, ZATCA, MyInvois, CFDI and NF-e.
MCP connector
- Server URL
https://xmlvalid.com/mcp- Login
- API key
- Protocol
- MCP 2026-07-28
- Instructions
Xmlvalid validates XML and e-invoices: well-formedness, XSD, DTD and RelaxNG schemas, and the Schematron business rules of EN 16931, Peppol BIS, XRechnung, Factur-X and national e-invoicing formats.
checks a document (its text or a URL) against a catalog schema, a saved schema or "auto" (the e-invoice profile the document names). It runs as the xmlvalid account the client signed in with (or whose API key it sends); reads a validation it started that was still running.
finds the catalog slug for a format.
explains a parser or validator message (libxml2, Java's Xerces, .NET) and how to fix it.
explains a business rule such as BR-CO-15.
When a validation fails, fix the first errors first: later ones often follow from them, and business rules run only once the schema check passes.
Tools
Reads data4
Changes data1
Skills
None in the store listings or on the server