Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already mark the tool as readOnlyHint=true, openWorldHint=true, idempotentHint=true, so the safety profile is clear. The description adds value by disclosing data sources (MITRE ATT&CK, GitHub Advisories, Cloudflare Radar), output elements (probability scores, TTPs, mitigations), and timeout behavior with async guidance.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.