A few major use cases for agentic coding for me:
1. Adhoc data visualizations. Anytime I have a question that can be answered quantitatively, I generate some code to make a plot.
2. Adhoc data annotation UIs. In ML, "make your own dataset" is often the answer, and that used to take a lot of custom UI work.
3. Adhoc CLIs for existing code. With visual elements.