Code library
Starter projects and datasets you can download and build on. Each one is small enough to read all the way through.
Simple agent loop
A minimal agent that thinks, calls one tool, and stops, so you can read the whole loop in one sitting before you change it.
RAG document corpus
A small, hand-checked set of documents for retrieval exercises, where you can tell by reading whether an answer was actually supported.
Gridworld
A tiny grid environment with rewards and walls for reinforcement learning exercises, small enough to work out the right answer by hand.