Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false and a closed-world scope, so the safety profile is covered. The description adds genuinely non-obvious behavioral context beyond that: this tool does not emit the finished draft, it returns a drafting brief derived from award criteria, word limits and user facts, which is essential to using the result correctly.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.