Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, covering safety profile. Description adds that it uses POST and pagination, but does not disclose response format, potential errors, or rate limits. With annotations covering safety, a 3 is appropriate for moderate additional context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.