Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose all behavioral traits. It states the core action and the uniqueness constraint but omits details like what happens if a review already exists, required fields for specifying the program/daycare, authentication requirements, or side effects. The description is partially transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.