Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, idempotent, and non-destructive behavior, so the safety profile is clear. The description adds context by noting it searches the 'latest official' documentation and includes various content types, but does not disclose any additional behavioral traits like result limits or freshness guarantees.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.