pdscheck

Drop in a handle, DID, or PDS URL; pdscheck runs a battery of probes against the PDS, against the wider relay network, and against PLC, then tells you what's working, what's broken, and how to fix it.

It's one HTML file. No build, no backend, no analytics, no logging — every probe runs in your browser. If a check fails for CORS reasons, expand the row and run the printed curl from your terminal.