Part 1: Anatomy of an AI Agent

AI Agents Demystified – Part 1: Anatomy of an AI Agent What actually makes an AI Agent work? In this first part of the Agents Demystified series, I break down an AI Agent using a Digital Person metaphor—making complex concepts intuitive and memorable. 🧠 LLM Brain The reasoning core (GPT-5.2, Claude Sonnet 4.5) working alongside the human-like cognitive layer. 📜 System Prompt (Directions) The “rules of behavior” and guardrails—positioned close to the brain, just like values and intent. 🤝 MCP Server & Tools (Hands) Where agents act—calling tools, APIs, databases, and workflows. 🧠 Memor…