Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description is the sole source of behavioral information. It only states that the tool 'views' data, implying a read-only operation, but does not disclose any other traits such as authentication requirements, rate limits, or what happens when no trust relationships exist.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.