Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, openWorldHint=true and destructiveHint=false, so the safety profile is covered. The description adds genuine value beyond that: it enumerates what the payload contains (profile, roles, compensation settings) and states a redaction guarantee (government ids and bank details removed), which an agent would not otherwise know. It stops short of describing error behavior for a missing/invalid id.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.