Preprint
Sep 2026
A Finger on the Scale: Covert Policy Steering through Agentic Skills
Reusable agent skills extend large language model (LLM) agents with task procedures, tool-use guidance, and output constraints. Yet these skills also act as externalized behavioral policies, which create a supply-chain risk: a third-party skill may preserve the declared task and valid output interface while covertly re...
Jia-Rui Li, Jia-Hao Chen, Chun-Yi Zhou et al.
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