[otsaloma]

Agreed! It's easy understand "LLM with tools in a loop" at a high-level, but once you actually design the architecture and implement the code in full, you'll have proper understanding of how it all fits and works together.

I did the same exercise. My implementation is at around 300 lines with two tools: web search and web page fetch with a command line chat interface and Python package. And it could have been a lot less lines if I didn't want to write a usable, extensible package interface.

As the agent setup itself is simple, majority of the work to make this useful would in the tools themselves and context management for the tools.