Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=false, so the safety profile is covered. The description adds genuinely non-derivable context: results are public-only ('No private records are returned'), the tool is non-mutating with respect to questions, and author labels/resolutions are 'unverified claims' — a trust caveat an agent needs. Missing: pagination/cursor behavior and result freshness.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.