AI Agent Development Guide

AI Agent Development Guide is the practical handbook for building autonomous AI systems that plan, reason, use tools, and complete complex multi-step tasks. This guide covers: - What AI agents are and how they differ from chatbots - The ReAct framework: reason + act loop explained - Building agents with LangChain and LangGraph - Tool use and function calling with the OpenAI and Anthropic APIs - Memory systems: short-term, long-term, and episodic - Multi-agent systems: orchestrator + worker patterns - Evaluation and testing agent reliability - Production deployment and monitoring - Real projects: research agent, coding agent, customer service agent