Building Your First Autonomous AI Agent in Python (Under 100 Lines)

Building Your First Autonomous AI Agent in Python (Under 100 Lines) You've used LLM APIs. You've called Claude or GPT in your scripts. But have you built an agent that actually runs on its own? The difference matters. An API call is a one-shot: you ask a question, get an answer, you're done. An agent is a loop. It reads a task, calls the LLM, executes the LLM's decisions (tool calls), and repeats until it decides the job is complete. This article builds one. Really builds one. No frameworks, no abstractions, just Python and the Anthropic.