Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare this as a read-only, idempotent, non-destructive, closed-world operation. The description adds valuable behavioral context by specifying that it returns source-linked metadata rather than generated findings or global literature results. It does not describe pagination or rate limits, but the annotations carry the safety profile.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.