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Harness²

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Harness the agent. Then harness its self-improvement.

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About Harness²

Harness² from Google Research is a plug-and-play recursive agent harnessing framework that lets LLM agents automatically evolve their execution harnesses (prompts, tools, memory) for open-world tasks-without ground-truth verifiers. Dual recursion: task-level Propose-Probe-Compose refinement + harnessing-level accumulation of reusable experience. Up to +11.5 points on professional benchmarks like WorkBuddy-Bench.

#llm-search #recursive agent framework #automatic prompt and tool evolution #memory accumulation for reusable experience #open-world task optimization #propose-probe-compose refinement #open source #verified

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