Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already mark idempotentHint=true and readOnlyHint=false, but the description adds concrete behavioral detail: 'calling twice returns the same draft, never a second one', 'Always a draft: a person confirms it there', and unmatched lines return for human handling. These details go beyond the structured hints and materially help an agent predict side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.