Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden. It mentions the target ('active layer'), which implies a prerequisite, but it does not disclose whether the operation is destructive, whether it is reversible via undo, what happens if no layer is active, or whether it affects layer masks or selections.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.