ai-agent-101.md

AI Agents 101

In this short video I'll show you how to write an AI agent from scratch in Python using just a few lines of simple code. We'll learn how AI agents work.

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The truth: An AI agent is just an LLM in a loop that can call functions.

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The Loop

1. Ask the LLM a question
2. If it wants to use a tool, run that tool
3. Give the result back to the LLM
4. Repeat until it has a final answer

Setup

pip install openai
export OPENAI_API_KEY='your-key-here'
python agent.py

Code Download agent.py — the entire pattern in ~100 lines.