Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=true. The description 'Delete' aligns with these, but adds little extra behavioral context (e.g., what happens if key doesn't exist, performance implications, or permission needs). With annotations present, the description meets a baseline but doesn't significantly enhance transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.