Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of disclosing behavior. It states 'delete' which implies a destructive action, but does not detail side effects such as whether the server session is invalidated, if authentication is required, or if this is reversible. The description is transparent about the primary action but lacks contextual behavioral details.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.