Harness Engineering Trainer

A self-directed curriculum for becoming a subject-matter expert in harness engineering — the discipline of designing, building, and operating the scaffolding that turns a language model into a capable agent.

Start here

1. Read Module 00 — What is harness engineering? first.
2. Work through the modules in order; each exercise set lives under Exercises.
3. Build the capstone in Module 10.
4. Keep the Glossary and References open as you go.

The full repo (including the capstone starter code) is on GitHub.

Learning path

Module	Topic
00	What is harness engineering?
01	The agent loop
02	Tools and tool use
03	Context engineering
04	Control flow and subagents
05	Permissions and safety
06	Prompts for harnesses
07	Evaluations
08	Architecture patterns
09	Frontier topics
10	Capstone — build a harness