Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare idempotentHint=true and destructiveHint=false, so the safety profile is clear. The description adds valuable behavioral context by specifying what state is preserved (panel survey, target cycle, progress, reward hold), which goes beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.