Agentic engineering from first principles — to production.

Agentic Engineering 101 is a free curriculum for developers who can already write code and now want to build AI agents properly. It is written to be read after you have made your first agent work and realized you do not actually understand why it works — the point where most tutorials stop and the real problems start.

Every page is written by a human, from systems actually built and actually broken. There is no generated filler here. Where a model can explain something better than a page of prose can, the page hands you the prompt to ask instead of padding itself out.

Start anywhere. The tracks below run roughly in dependency order, so if you do not know where to begin, begin at the top.

Start with What an agent actually is, or pick anything below. 4 of 10 pages written, last updated 2026-09-11.

What do you need to learn first?