Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and destructiveHint=false, so the description does not need to restate safety traits. It adds value by detailing conditional return behavior: authenticated:true with empty pending[] when all providers are connected, and connect_url plus per-install URLs when credentials are missing. This provides context beyond the annotations, though it does not cover partial connection states or error conditions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.