How to Build Your First AI Agent with Claude API: Step-by-Step Guide Most developers build their first AI agent the hard way: they wire up a chat loop, bolt on some tools, and watch it spiral into an uncontrollable mess of nested callbacks and race conditions. Building an agentic AI that actually works in production requires a different mental model from day one. This guide walks you through exactly that, using the Claude API, plain Python, and (optionally) LangChain to build something you can deploy and extend. ...