Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is covered. The description adds useful content context (dated, sourced, AI-authored) and a 'not advice' disclaimer, but says nothing about volume, pagination, or freshness beyond 'dated'.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.