I’ve recently discovered that you can create sensors via the HTTP integration. This has been great for creating sensors from Node-RED when I don’t have the custom component installed.
The only issue I have with it is that the sensors are retained across restarts but the values are not and the sensors just show as “Unknown”.
There seems to already have been a thread on this at HTTP sensor persistence but I’d prefer not to have automations which have to run on every startup as I sometimes have to reload a often when updating configs. Having automations on startup could also cause high resource usage as everything runs at once.