Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare this a read-only, idempotent, non-destructive, closed-world operation, so safety is fully covered. The description adds genuinely useful behavior beyond that: that only the most recent jobs are shown, and that payloads and results over 4000 characters are truncated to a prefix — a real constraint an agent could otherwise misinterpret as corrupt data.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.