Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds that the article is 'public' and that the response includes 'metadata and body paragraphs', which usefully signals no authentication and full-text depth, but it says nothing about rate limits, pagination, or URL validity requirements.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.