This is not a direct answer to your question, but I am developing a robotic observatory management software in python (that includes an full python indi client), and broadcast some information on mqtt topics.
My full stack includes mosquitto, telegraf, influxdb, and grafana, I personally use grafana to monitor the observatory, but from what I know, HA can also query influxdb with flux query in a very similar way telegraf does.
That's a potential idea for you if used together with infi-mqtt from @rkaczorek