Paste a node's user WSS URL from your cluster handoff pack, connect, then send an input or a read request to the hello contract. This page generates an ephemeral client keypair and never stores or displays it. The URL field starts empty — there is no default host.
User ports use TLS. If the browser blocks the WebSocket, open https://<node-domain>:<user_port>/ in this browser, accept the self-signed certificate warning, then connect again. See the README.
Not connected.