Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden and covers paid nature (150 credits), auth requirement, what it does, and return fields. However, the 'truncated' field is not explained, which is a minor gap given the 'fetch ALL records' claim.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.