🛠️ Harness Engineering — Quick Actionable Guide 🤖

Distilled from the Learn Harness Engineering course by WalkingLabs, which synthesizes harness engineering theory and practice from OpenAI , Anthropic , and industry practitioners. The model is smart. The harness makes it reliable. — A well-harnessed agent spent \$200/6hrs and built a working game. Without a harness, same model spent \$9/20min and produced garbage. The model didn't change. The harness did. 📊 Hard numbers: 📉 SWE-bench Verified top agents: ~50-60% pass rate — on curated tasks wit