Free Lesson
Learn To Build Smarter AI Agents With LangGraph
45 min
Aug 10, 2026 1:30 PM
Virtual (Zoom)
In this video
What you'll learn
Set up LangGraph state in a Jupyter notebook
Learn to define a state class with a list of messages and add_messages as the reducer, so each step keeps context.
Turn plain Python functions into graph nodes
Learn to write a function that takes state and returns state, then register it with add_node on a StateGraph builder.
Wire the flow with edges, START, and END
Learn to connect nodes with add_edge, compile the graph, and invoke it to see the state snapshot each node produces.
Visualize and debug the whole run
Learn to draw the graph as a mermaid diagram, read checkpoints, and trace which node failed using LangSmith.
Why this topic matters
Right now your agents run in a straight line: one prompt in, one answer out. The moment a real task needs a decision, a retry, or memory of what already happened, you are rebuilding the whole thing. LangGraph gives you a workflow you can see, branch, pause, and resume, which is the gap between a demo agent and one a team can run. That structure carries into any agent framework you pick up next.
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