Harness Engineering Concept Shifts Focus From Model Selection to Agent Scaffolding
July 12, 2026
Agent performance depends more on the surrounding harness—including prompts, tools, context policies, and recovery paths—than on raw model intelligence alone. Effective development requires treating this scaffolding as a formal engineering artifact to prevent recurring model failures.
HOW THIS AFFECTS YOU
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builderYou should prioritize building robust tool-use and recovery loops over chasing incremental model benchmarks.
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founderYour competitive advantage lies in the proprietary system architecture surrounding the model rather than the underlying LLM.