Building a listed tool
Ruiyao Xu
First author, Harness², named behind the Harness² listing on Anchor Terminal.
What Ruiyao builds
Harness² is Google Research's open-source Python framework that has an editor model rewrite an agent's harness (prompts, guardrails, memory, tools, skills, subagents, scripts and plugins) for each task and keeps lessons for later tasks, with model weights fixed.
First author, Harness², researched 27 October 2026 · the people behind it
Works with
- Tomas Pfister Harness² co-author; Head of AI Research, Google Cloud
Questions
Who is Ruiyao Xu?
Ruiyao Xu is first author at Harness².
What does Google (Google Research) make?
Anchor Terminal lists Harness² from Google (Google Research). Harness² is Google Research's open-source Python framework that has an editor model rewrite an agent's harness (prompts, guardrails, memory, tools, skills, subagents, scripts and plugins) for each task and keeps lessons for later tasks, with model weights fixed.
How are Ruiyao's tools graded?
Harness² is graded E, 42 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.
Sources (4)
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