Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It adds caveats like 'canonical' and 'when available', which hint at authority and conditional availability of docs. However, it does not disclose the return format (e.g., array, JSON), potential rate limits, or whether authentication is required. The description is adequate for a simple read operation but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.