Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are supplied, so the description carries the full burden. It does communicate that this is a non-mutating inspection covering two axes (health and storage), which is enough to signal low risk, but it says nothing about cost, permissions, or whether the check can fail or time out.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.