- In short
- A Skill bundles executable code with an instruction set, so an untrusted Skill is a supply-chain risk: its malicious logic can run the moment it is invoked, before any conversation-level input or output screening can see it. The control is a pre-execution audit for anomalous calls and out-of-scope behaviour, backed by a runtime sandbox that runs the Skill with least privilege and no standing credentials, ending in an explicit verdict - approve, reject, or remediate and re-audit - with trust granted only to vetted, signed sources.
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