Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=false, idempotentHint=false, openWorldHint=true and destructiveHint=false, so the mutation/safety profile is covered structurally and the description does not contradict it. However, the description adds nothing beyond the annotations: it doesn't say what a partial update leaves untouched, what fields the body accepts, or what permissions are required.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.