Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare the full safety profile (readOnlyHint, idempotentHint, destructiveHint=false, openWorldHint), so the description only needs to add context. It does so by describing what comes back – status, impact, and affected components – which is valuable since no output schema exists. It omits pagination, result-count limits, and how far back "recent" reaches.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.