Pure agentic loops with markdown documents as a program 'agentic workflow' is incredible for experimentation, developing and testing your workflow idea.
The second it works, bake the workflow into the harness. Yesterday I was doing just that, and the whole agent loop disappeared because the process could've been condensed into a one-shot request (+1 MorphLLM fast apply) from careful context construction. (It was an Autoresearcher)