Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered structurally. The description adds the data scope ('Reads the account's saved settings only'), which is useful, but says nothing about pagination, result limits, or ordering, and the returned-field detail is largely duplicated by the output schema. Adequate but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.