> "Wait.. the API is already returning the data we need"

To me that's a huge one. I witnessed this firsthand more than once and the fact that you make that comment too just shows there's a problem: I've seen top frontier models go wild, adding shitload of code to spout something that, eventually (after burning shitload of tokens), worked.

While it was basically a one-line change because the data was already there on the client-side.

The thing thought it noticed a pattern and went ballistic, mimicking some existing client-server communication, to "solve" my problem.

The worst is: all vibe-coded projects are full of such nonsense and the "prompt engineers" (such engineers, much wow btw!) who wrote their magical incantations have zero clue about it.

I use these tools daily, I love the time they save me. But sheesh...