Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint false. The description adds that the tool splits a domain into three parts, which is behavioral context but does not disclose any additional traits beyond what annotations provide. It is consistent and adds value by specifying the output structure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.