Preprint
Aug 2026
What Keeps Agent Skills from Being Reusable? Evidence from 138K SKILL.md Files
A deterministic routing stress test over 20,000 skills shows the functional impact: skills with valid routing metadata are retrieved more reliably from startup descriptions than skills with routing defects, while AI-marked skills show more safety and portability problems.
Chi Zhang, Yimin Liu, Xinze Chen et al.
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