Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already disclose that the tool is not read-only, not idempotent, and not destructive. The description adds that it validates coverage with an actual drape, which is useful behavioral context beyond the annotations. It still does not explain side effects, persistence, cost, or what a 'seed' is, leaving meaningful gaps for a non-read-only operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.