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Show HN: A 30-minute course to get up to speed on how AI agents work
9 short lessons, ~60 lines of Python. Each adds one concept — tool calling, memory, state, policy gates, self-scheduling — until you see the full agent stack.
The core loop is just a while loop. That's AgentExecutor. That's what the frameworks do.
Runs in the browser (Pyodide). No setup, no signup. Mock mode works instantly, or plug in a free Groq API key for live LLM responses.
Open source: https://github.com/ahumblenerd/tour-of-agents https://github.com/ahumblenerd/tour-of-agents
- ahd94 7mo agoI kept seeing engineers reach for LangChain or CrewAI without understanding what these frameworks actually do. Like they say, if you cannot build it, you do not understand it.