Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already mark this as read-only, idempotent, and non-destructive, so the safety profile is covered. The description adds behavioral value beyond annotations by specifying the output's distinguishing dimensions (availability, complexity, executable status, fallback metadata) and the executable vs. experimental/planned distinction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.