Network diagnostics you can run without knowing the UniFi API, plus UniFi OS console status.
network clients getby name/MAC/IP with VLAN, switch port, link, auth, and errorsnetwork ports find/ports list --compactnetwork topology pathandnetwork diagnose --clientconsole status(and gatedconsole reboot)- Access install detection (exit 11 only when the app is missing)
unicli --version