[pkscout]

 

I don't use the YASTE remote, but it looks like you can add custom commands to YASTE (number 6 references custom commands):

Thanks for your answer! Yes, it seems that there is a possibility to add custom commands to Yatse - but only in the PRO version. And since I'm using a degoogled phone, I can't buy anything at the playstore.

Another possibility for me could be Eldrik's JSON-RPC solution, but unfortuately, the ExecuteAddon method (and many others) is disabled in the latest Kodi versions. Is there any way to enable it, maybe by editing a configuration file?

As far as I know there isn't any way to selectively enable/disable parts of the API. ExecuteAddon (which I had missed when I looked at the docs) is there for the v12 API (for Matrix), so you should be able to use it.  Are you seeing something specific that leads you to believe ExecuteAddon isn't working?

https://kodi.wiki/view/JSON-RPC_API/v12#...ecuteAddon