Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The readOnlyHint annotation already communicates that this is a safe read operation. The description adds useful content context—what kind of venue information is returned (address, contact, house rules, practical questions)—but does not reveal additional behavior such as localization defaults or response shape, which is acceptable given the annotation coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.