03 - LangChain and LangGraph: Agents with AgentExecutor and Tools

Building AI Agents with LangChain and LangGraph 1.0: from AgentExecutor to stateful graphs. Tools, chains and the new production standard for LLM agents.

What you'll learn

• Core Components
• Package Structure
• How AgentExecutor Worked
• Why AgentExecutor Was Deprecated
• Key LangGraph Concepts

This article is part of the AI Agents series on federicocalo.dev.

Read the full article (16 min)

The complete article includes code examples, diagrams, and practical exercises.

Originally published on federicocalo.dev