Preview

Spawn measured clients against your scene, watch sync live, and get an honest pass/fail sync-health report.

Pair the mp-testd sidecar to run multiplayer tests

The panel drives external test clients through a local sidecar — it never hosts engines in this page. Start it from the repo root:

cd tools/mp-testd && npm run build && npm start

The sidecar prints a pairing link (?mpd=<port>#mpdtoken=<token>) on startup — open it, and this page remembers the pairing.