Module 4 of 10, lesson 3 of 5

Videos

Reasoning loops and architectures

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Building Effective Agents with LangGraph

Each pattern coded in turn: chaining, parallel work, routing, orchestrator and workers, evaluator loop, then the agent. LangChain, 31:49

Building Effective Agents with LangGraph Play video (31:49, LangChain)

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• 1:00 Workflows vs agents
• 11:00 Routing
• 14:00 Orchestrator and workers
• 20:00 Evaluator and optimizer
• 27:00 A basic agent loop

If you want more

Optional, not counted in the module time.

Python: Create a ReAct Agent from Scratch

A ReAct agent in plain Python: the prompt, the tools and the loop, without a framework. Alejandro AO, 57:27

Python: Create a ReAct Agent from Scratch Play video (57:27, Alejandro AO)

Clicking loads the YouTube player, which may set trackers. No framework. From 2024. Code on GitHub.

• 3:05 What a ReAct agent is
• 15:15 Coding the agent class
• 22:12 The system prompt
• 38:08 Running the loop

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