Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond the annotations, the description explains that the receipt acknowledges submission only, not acceptance, and that there is no review-status lookup or guaranteed reply. It also discloses nightly eligibility checks, deduplication, and submission rate limits, which are valuable behavioral details for a non-read-only submission tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.