Running an external script from Kodi.. is this possible?



I have Kodi version 21.0 Omega on an Nvidia Shield Pro but the Kodi Callbacks add-on doesn’t seem to be available in the repository.
I also tried to get the zip download and install manually but Kodi said that the dependency on xbmc.python 2.30 could not be satisfied.

I would like to run an external windows powershell script (can convert to python if needed) located on my NAS (which Kodi has access to).  Ideally I would like kodi to run the script whenever the kodi database is updated but am satisfied just to have some mechanism to run the script from within Kodi.

Does anyone have an idea of how I might accomplish this (if is possible)?  Thanks in advance for any help you are able to provide.