Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already cover the safety profile with readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds the context that definitions are 'fixed' and mentions the publication schedule, but does not disclose any additional behavioral traits such as caching, staleness, or error conditions. The description is consistent with the annotations and provides modest added context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.