Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already flag destructiveHint=true and idempotentHint=true, but the description adds the material detail that destruction is actually a soft delete: data stays readable, the name is released, and repeat calls are safe. It also discloses an auth/tier requirement (sp500+, sample rejected), which no annotation conveys.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.