Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must carry full behavioral disclosure. It discloses that probability is updated and stage history is logged, which is useful. However, it does not mention reversal behavior, validation rules for stage transitions (e.g., can closed_won go back?), permission requirements, or idempotency. The disclosure is partial but not misleading.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.