Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds nothing on top of that — not what the policy governs, not whether a default policy is always present, and not what happens if none exists. Note idempotentHint=false on a parameterless getter is unusual, and the description does not clarify it.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.