Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With annotations already establishing this as a read-only, idempotent, non-destructive operation, the description adds meaningful context by detailing the exact response shape under different conditions (authenticated:true with empty pending[] vs connect_url for toolkit and per-install URLs). This goes beyond the annotations to clarify runtime behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.