Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate read-only, idempotent, and non-destructive behavior, and the description adds useful conditional response details: authenticated:true with empty pending[] when connected, and connect_url plus per-install URLs when credentials are missing. It does not describe partial-connection behavior, but the added context is meaningful.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.