[HeiMz]

 

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?