curl --request GET \
  --url http://localhost:6063/devices/{id}

{
  "id": "builtin",
  "name": "Rockbox (Built-in)",
  "host": "localhost",
  "ip": "127.0.0.1",
  "port": 0,
  "service": "builtin",
  "app": "builtin",
  "is_connected": false,
  "base_url": null,
  "is_cast_device": false,
  "is_source_device": false,
  "is_current_device": true
}