Ask HN: How does Roam Research “call home”?

They're using websockets I believe.

Look in the network tab for .ws (hosted on Firebase). You can inspect the messages using Chrome. It sends updates for every change to a block you make.

Hmm, nothing in the WS tab of Chrome Dev Tools but you're probably right.

A websocket? I'm assuming that once the websocket is open, any future traffic inside wouldn't be logged in the developer tools?

Websockets probably. The built JS contains references to both WebSocket and Firebase.