Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description must carry the full behavioral burden. It discloses the core behavior—reporting readiness status and index statistics—but does not describe side effects, return format, status codes, or failure behavior. For a simple health tool this is acceptable but not richly transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.