Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations indicate this is a non-read-only, non-destructive, non-idempotent operation with open-world semantics. The description adds that it's a POST request, which implies mutation, but doesn't provide behavioral details beyond what annotations already cover. No additional context about side effects, permissions, or response behavior is included, though there's no contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.