Google Research's Harness² lets agents build their own harness per task

thisiskp_ · x · 2026-10-26

The Prompt Engineering YouTube channel posted a 60-second explainer of Harness², a Google Research framework that lets an AI agent build and evolve its own harness — its instructions, tools, and control loop — for every task, with no retraining. All resources are public: paper arXiv:2610.14224, GitHub repo google-research/harness2, and project page harness2.github.io. It's an interesting research direction handing workflow/tool configuration itself over to agent self-optimization.

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