Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must convey behavioral traits. It adds useful context by noting the unit (milliseconds) and that the value can be negative, implying it may return signed numbers. However, it does not explicitly confirm read-only behavior or explain error scenarios, which is a gap for a tool with no annotation safety hints.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.