I've been playing with midi CC and NS4 and manage to make a small app to create NS4 Programs, here is the link : https://nord-stage-4-ai-program-maker-6 ... 1.run.app/
Basically you enter a prompt or create one using AI then it will send a sequence of midi CC sequences to your NS4 to create the patch from scratch on the current program you're on.
So you just have to plug your NS4 via MIDI usb and try it !

I'll will update it frequently, for now sample based user requests will be kinda hard to do for the AI because it doesn't know the current samples loaded in your keyboard, i'm trying to find a solution. Also it does not seem to work on firefox. I advise asking for Analog Synth/Organs
The AI prompt was based on the MIDI CC documentation i've made in another post :
Enjoy !