Everyone’s talking about AI agents! But what are they, and how do you build one? This talk cuts through the hype. Drawing on my experience building a GenAI platform, I’ll show that powerful agents are within reach, no advanced degree required. We’ll define agents simply: LLMs + tools + memory. Then we’ll build an agent with the OpenAI Python SDK, using coding basics you know: functions, loops, and conditions. I’ll show how you can enhance your agent with a knowledge base using Elasticsearch as a tool. By the end, you won't just understand agents; you'll be fully equipped to build your own.