One small agent, a home inverter’s assistant, built again in each agent framework: LangGraph first, then others. Each post asks the same questions of a different framework: where does the state live, how does control move from one step to the next, and do the frameworks share a structure underneath?

Where Does the State Live?
One small agent, run step by step in LangGraph: where its state lives, and how LangGraph decides what runs next.