Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=false, yet the description still adds real value: it discloses the auth mechanism ('Authorization: Bearer <key>') and what content comes back (status plus the Architect's notes/questions). No return format or pagination detail, but with no output schema that is a minor gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.