Yet another paper.
This time, we asked a practical question:
Do public SKILL.md files actually make agents better?
The open skill ecosystem has a quality problem.
The hard part isn’t finding more skills. It’s knowing which ones are unique, useful, safe, permissively licensed, and relevant to the task.
We crawled ~821K public skills and curated them into 96,401. Then we tested the full retrieval pipeline across 3 benchmarks, 2 harnesses, and 2 open backbones.
It improved all three benchmarks, with the largest pooled gain at +7.5pp on SkillsBench.
More skills are not automatically better.
Curation, retrieval, and the harness determine whether skills become capability.