AI Agents and Tool Use

In this lesson, we will learn AI agents and tool use. We will explain what an AI agent is, how it differs from a normal chatbot, and how planning, memory, tools, task execution, API calls, human approval and agent workflows work with practical examples. ## Lesson objective In this lesson, we will learn AI Agents and Tool Use. In the previous lesson, we covered RAG — Retrieval-Augmented Generation. We explained retrieval and generation stages of RAG, document chunking, embeddings, vector search, metadata, source-based answers, access control and security risks. Now we move to a concept where AI systems work more actively: A simple chatbot answers user questions.