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xmlvalid

com.xmlvalid/xmlvalid · v1.0.0

Validate XML and e-invoices (XSD, DTD, RelaxNG, EN 16931, Peppol, XRechnung), explain errors

Connect Remote server

Terminal
claude mcp add --transport http xmlvalid https://xmlvalid.com/mcp --header "Authorization: Bearer <YOUR_API_KEY>"
~/.cursor/mcp.json
{
  "mcpServers": {
    "xmlvalid": {
      "url": "https://xmlvalid.com/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "xmlvalid": {
      "type": "http",
      "url": "https://xmlvalid.com/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://xmlvalid.com/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 5 found in our last check

  • validate_xml

    Validate an XML document with xmlvalid: well-formedness, an XSD, DTD or RelaxNG schema, and for e-invoices the Schematron business rules of EN 16931, Peppol BIS, XRechnung, Factur-X and national formats. Pass the document as `xml` (its text) or `url` (a public http(s) address),…

  • get_validation

    The status and result of a validation started with validate_xml that was still running when it returned (status "queued" or "running"). Results are kept for 24 hours.

  • search_schemas

    Search xmlvalid's catalog of official XML schemas (UBL, CII, Peppol, XRechnung, Factur-X, ISO 20022, HL7, sitemaps…) by name, namespace, root element or area. Returns each schema's slug to pass to validate_xml, its version and the business rules it checks. No sign-in or API key…

  • explain_error

    Explain an XML parsing or schema validation error message: what it means, why it happens and how to fix it, with an example. Understands libxml2 (xmllint, PHP, Python lxml, xmlvalid), Java (Xerces cvc-* codes, SAXParseException) and .NET (System.Xml) wording; paste the message a…

  • explain_rule

    Explain an e-invoicing business rule by its id, such as BR-CO-15, BR-DE-1, PEPPOL-EN16931-R001 or a national CIUS rule: its message, level, the rule sets it belongs to, why invoices fail it and how to fix them. No sign-in or API key needed.

Headers

NameDescription
Authorization
Optional, secret
An xmlvalid API key (Dashboard → API keys, free tier), for validate_xml and get_validation; the lookup tools need none

Details

Endpointhttps://xmlvalid.com/mcp (Streamable HTTP)
First published22 Oct 2026
Last updated22 Oct 2026
Registry namecom.xmlvalid/xmlvalid

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