Friday, 23 October 2026 · Bengaluru · New Delhi · San Francisco
Artificial Intelligence Launched 20 October 2026

Harness²

Harness the agent. Then harness its self-improvement.

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Launched
20 October 2026
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0 taps · 30 days

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We're listed on 100xFounder. Harness² now has a page on the 100X Meter, where readers back the startups they believe in with one tap a day.

If you've used Harness², a tap or a short review there would mean a lot to the team: https://100xfounder.com/startup/harness%c2%b2/?utm_source=linkedin&utm_medium=share&utm_campaign=founder-kit

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What Harness² does

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.

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