Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It enumerates exactly what information is returned (parent, subclass, equivalent class, restrictions, individuals), which is transparent. However, it does not explicitly state that the tool is read-only or what happens if the class does not exist.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.