Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden for behavioral disclosure. It only repeats the name's implication of a read operation without elaborating on side effects, authorization needs, or return characteristics. The phrase 'complete... with all 7 rules' is the only added detail.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.