Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and readOnlyHint=false, so the safety profile is fully covered by structured data. The description adds only mildly useful detail ('removes the stored submission record'), while repeating 'destructive', which is redundant with the annotation. It says nothing about irreversibility, permissions, or failure behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.