Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and openWorldHint=false, so safety is covered structurally. The description adds the meaningful detail that only a *running* job is a valid target, but says nothing about reversibility, what happens to already-imported content, or auth/permission requirements.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.