Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral burden. It discloses only that this is a 'Pro feature', implying an entitlement or api_key requirement, and that the output is a report. It does not state whether the operation is read-only or mutates the project, what the report's output format or destination is, or whether api_key is mandatory. Minimal added context beyond what the name implies.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.