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Module 2 · 3 lessons · 55 minRoute via Lesson 3

Your agent and the machinery it drives

The route step in this module is Lesson 3, “The save system” — it opens after you finish “Build your first thing” (Module 0, Lesson 6). The other lessons are reference you can read any time. Sign in to track your progress.

The practical route starts at

Welcome →

Module 0, Lesson 1 · 10 min

Lessons

  1. 01Your AI coding agentReference · read any time15 min
  2. 02The engine roomReference · read any time15 min
  3. 03The save systemOpens after “Build your first thing”25 min

Module 2 introduces the agent that does your project's writing, and the machinery it operates on your behalf so you never open it yourself — including the moment your work gets saved for good. Three lessons in the same app window you opened in Module 0, each one layer deeper.

What this module builds

By the end of this module, you can name your agent and the app it lives in, catch its three most common failure modes, decide what to do with an approval prompt, and say what happens to your work every time your agent saves it.

If you arrived from Module 0 with your first page already built, Lesson 3 is the one to do next — it's the practical route's next step, and on the course site it opens as soon as Module 0 is complete. Lessons 1 and 2 are optional support you can read at any time.

Each lesson builds on the last:

  • Lesson 1 — Your AI coding agent: you can name your agent, name its app, and say how to spot each of its three most common failure modes and what to say back → sets up Lesson 2 by opening the same approval prompt back up and going deeper on what it's protecting.
  • Lesson 2 — The engine room: you can say what kinds of machinery your agent runs for you below deck, and decide what to do with an approval prompt — approve it, ask for it in everyday words first, or refuse it and steer → sets up Lesson 3 by naming the one piece of machinery you give orders about.
  • Lesson 3 — The save system: you can tell your agent to save a working version and to take you back to one, in your own words, and your Module 0 checklist has a copy on GitHub that your agent confirmed → sets up Module 3, where you work with your agent all the way through a real change.

The thread that ties it together: the same app window, looked at three times, each time one layer deeper — first who's in the window with you, then what it's quietly running for you, then what "saved" means when it says so.