Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It states that the mask is removed, implying a destructive action, but does not disclose prerequisites (e.g., whether a mask must exist), side effects, reversibility, or what happens if no mask is present. This is minimal behavioral transparency for a mutation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.