Harness²
Harness the agent. Then harness its self-improvement.
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.
Harness² is a Open Source company. It launched on Product Hunt on Oct 20, 2026, with 196 upvotes. Adamlead has 1 person on file at Harness².
Harness² timeline
- Harness the agent. Then harness its self-improvement.
People at Harness²
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| Name | Title | |
|---|---|---|
Maker | – |
Frequently asked questions
Who works at Harness²?
Adamlead has 1 person on file at Harness², including Han Yu (Maker). Each email shows whether it has been verified.