I personally think a GUI tool would provide better user experience since you can see the files, pick which ones to include as context, and check the prompt gene

I personally think a GUI tool would provide better user experience since you can see the files, pick which ones to include as context, and check the prompt generated in real-time. So I built my own GUI version of this (plus a lot of other quality of life features): https://prompt.16x.engineer/ https://prompt.16x.engineer/