Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, and openWorldHint=false, fully covering the safety profile, so the description carries a lower burden. However, it adds no behavioral context at all beyond the annotations, not even whether a missing job errors or returns empty.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.