Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, and idempotentHint, so the safety profile is clear. The description adds valuable behavioral context: data sources (CVE NVD, OpenCVE, GitHub Advisories), output type (structured risk metrics), and a warning about potential timeouts with async usage. No contradictions with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.