My first prompt was:

"Help me develop a MacOS app that blurs my screen the closer my mouse is to the top of the monitor"

That was my PoC to see if there's APIs Claude could find that would make this easy to do. Once I proved that worked, I asked it to instead help me devise a way to adjust that blur based on my posture. It suggested the vision framework and measuring head height.

Just kept iterating, one step at a time. Any toil I experienced, I asked it to remove or automate.