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Outcome School · AI agents10 min read

by Amit Shekhar · 2 April 2026

Harness Engineering in AI

Harness Engineering in AI.

1,896 words#ai-agent#llm#ai#machine-learning1 recall cards

Harness Engineering in AI
Read on Outcome School ↗then come back to lock it in
Before you read, guess

How does the quality of the harness affect user experience relative to model capability?

Ten seconds, a guess, then read — a wrong guess still makes the answer stick.

What this article covers

  1. What is a Harness in AI?
  2. Why Do We Need Harness Engineering?
  3. Components of an AI Harness
  4. Harness Engineering for AI Agents
  5. Harness Engineering for Evaluation
  6. Best Practices in Harness Engineering
  7. Putting It All Together

The article lives on outcomeschool.com. Read it there, then come back: the tutor in the margin has read it and will answer questions, and the questions below check what stayed.

Before you go

In one sentence, what was this chapter about?

From memory, without scrolling up. Writing it is what makes it yours; the grade is only to show you what you had.

How sure?