Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=false, destructiveHint=false, idempotentHint=false and openWorldHint=true, so the safety profile is covered, but the description adds nothing beyond that: it does not say which batch actions are supported, whether a partial failure is atomic, or what side effects occur on the affected presets. For a non-idempotent mutation reached via an empty schema, that is a real gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.