Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint false, providing a strong safety profile. The description adds the behavior of filtering by chain/token, but does not detail data freshness, pagination, or ordering. With annotations covering core traits, this is adequate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.