Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It mentions the return value (new slug and name) but does not disclose side effects such as whether code is copied, if a new resource is created (implied by 'duplicate'), permission requirements, or impact on the original snippet. This is minimal disclosure for a mutating operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.