Tech Leaders Hub — Class 7
Lab 8

Hello LangGraph

Giving your agent a backbone — state machines, conditional edges, and visual graphs.

The Problem with Plain Loops

The ReAct loop you just saw works great. But it's just code in a for loop. What if you want to:

Visualize the flow as a graph
Add conditions (go to human review)
Pause and resume mid-execution
Have multiple different execution paths

That's what LangGraph gives you.

Graph Visualization

STARTLLM Nodegpt-4o-miniconditioncheckneeds tooldoneTool NodecalculatorENDloop back
Query: What is the square root of the year America declared independence?

Execution Log

Logs will appear here when you run the graph...

🚀

Next Class: Build This From Scratch

In the next class, we build a full LangGraph agent from the ground up. Today, you've seen what it can do — the graph, the nodes, the conditional edges.