Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must carry the full burden of behavioral disclosure. It only states the conversion, omitting details about validation behavior (e.g., handling of out-of-range minutes or seconds), error messages, or any side effects. This is insufficient for a mutation-like tool (though it is a pure function).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.