Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare the safety profile (readOnly=false, destructive=false, idempotent=false, openWorld=false), so the agent knows this is a non-destructive, non-idempotent write. The description adds that the returned id is reused downstream, but gives no auth requirements, rate limits, or side-effect detail beyond that.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.