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What Is Harness Engineering? How to Build AI Agents That Catch Their Own Mistakes

The model does the reasoning. The harness is much of what makes it reliable, and there is a test for every part of it. Harness engineering is designing everything around an AI model, such as its instructions, context, tools, checks and sign-off points, so the agent gets work right first time and ca…

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  1. 2026-11-11 09:13 · DEV Community — AI
    What Is Harness Engineering? How to Build AI Agents That Catch Their Own Mistakes

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