The WebSocket service runs best on its own VPS. Steps for systemd, SSL, and connecting to Vercel.
meosify-ws is a separate Node service that receives live payloads from your FiveM server and forwards them to MEOS clients.
Bind on 0.0.0.0, put nginx in front as a reverse proxy with wss://, and start the service via systemd.
Set the same MEOSIFY_WS_SECRET on Vercel and on the WS server. The dashboard and resource never talk directly to each other — everything goes through Meosify.