Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already cover the safety profile (readOnly, idempotent, non-destructive), so the bar is lower. The description adds genuinely useful behavior: the draft/published precedence rule and the forms:write auth requirement for unpublished reads. No return-format or pagination detail, but nothing here is a mutation risk.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.