Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=false and destructiveHint=false, so the description adds the context that this resumes a paused workflow. It does not disclose specific side effects or state changes, but with annotations the bar is lower. The description adds moderate value beyond the structured fields.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.