Multi-Step Agents with LangGraph

AI Agents and Tool Use Intermediate 4 min read Published
In this lesson

A simple agent loop is fine for small jobs. When an app needs clear stages (draft → check → revise), branches (“if the check fails, go back”) and pauses for a human, you draw it as a graph. LangGraph is a popular library for exactly this: each step is a node, arrows are edges, and a shared state dictionary flows through them.

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