Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds real value by disclosing the scope of returned content (failing monitors, plugin issues, beacon silence, domain/ownership, safe updates, paused alerts, billing), which tells the agent what a call will surface. It omits ordering, freshness, and whether results aggregate across all sites.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.