Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already establish readOnlyHint=false, destructiveHint=false, and idempotentHint=false; the description adds genuinely new behavior by disclosing that the request is queued for manager review rather than executed, and that a confirmation with disposition details is returned. It does not cover how long review takes or what a rejection looks like, but the essentials beyond the annotations are there.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.