Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already declare a read-only, idempotent, non-destructive operation, so the description does not need to repeat that. It adds meaningful behavioral detail by specifying `authenticated:true` and `empty pending[]` on success, and the presence of `connect_url`/URLs when credentials are missing.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.