Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden but only restates the function. It does not disclose whether the analysis is read-only, what lock sources it inspects (e.g., pg_locks), whether privileges are needed, or what the output format is—a significant gap for a diagnostic tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.