xmlvalid for ChatGPT

com.xmlvalid/xmlvalid

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

client:ChatGPT transport:streamable-http tools:5

Install xmlvalid in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://xmlvalid.com/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs