Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already indicate this is not read-only and not destructive, and the description does not add behavioral details such as rate limits, whether it can be sent only to unverified clients, or side effects on email history. It simply restates the action without enriching the agent's understanding of side effects or constraints.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.