Harness²
Harness the agent. Then harness its self-improvement.
Harness² launched on October 19, 2026 with 177 votes, #50 of 3,079 launches that month and more than 99% of that year's launches.
What it 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.
Contribute to google-research/harness2 development by creating an account on GitHub.
Does a similar job
all alternatives →
Harness by Autonomous6d ago · autonomous.ai · ▲287Every coding agent, every machine, one command center.
Harness Manager27d ago · harnessmanager.devmesh.xyz · ▲83Your AI coding stack manager, all in one place
HarnessRouter Community EditionAug 2026 · harnessrouter.ai · ▲397Open-source unified interface for agent harnesses
More ai this month
the category →
Paintings by AI models: programs run through a simulation of oil paint.
AI · 19d ago · stillwet.art
Source: Product Hunt launch ↗
Launched alongside, October 2026
the whole month →- IV
Life & fun · 13d ago · tanzaniaeducationproject.org
Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
Life & fun · 14d ago · bigwords.page
A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.
Life & fun · 10h ago · permit.petercai.com
Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.
Life & fun · 7d ago · guitoro.com