Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and idempotentHint=true, so the read-only safety profile is covered. The description adds the exact GET endpoint, but gives no further behavioral context such as pagination, response shape, or authorization requirements; this is acceptable for a simple zero-parameter list endpoint.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.