Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The readOnlyHint annotation already covers the safety profile, so the bar is lower. The description adds the behavioral detail that the result includes both the folder and its contents, which is useful. However, it fails to disclose what 'contents' encompasses (files, subfolders, documents?), how the result is structured (nested vs flat), or any permission-related behavior. The userId parameter hints at permission scoping but is not mentioned in the description.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.