Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It adds valuable context by specifying that 'analytics' are included in the response, not just static details. However, it omits other behavioral traits like error handling for missing IDs, caching behavior, or whether the analytics are real-time.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.