Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of explaining behavior. It only says 'Get details', which conveys a read-like operation through the verb, but it does not describe what is returned, possible errors, or any side effects. This leaves key behavioral aspects implicit.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.