[Petrakis]

https://github.com/jheising/HAPI or REST

[terrantech]

I thought about doing an API, but is that really the easiest way to run a single command and get a single input? Seems like overkill.

[Petrakis]

Then Websockets. There are few python implementations of websockets module, this is one of them https://pypi.org/project/websockets/