Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so the description alone must disclose behavior. It mentions generating random booleans but does not explain that the output is an array when count > 1, or that true_weight controls probability. The description is minimal and lacks detail.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.