Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. 'Test' implies a read-only diagnostic operation, but the description doesn't specify whether this is passive scanning, active testing, what permissions are required, what the output format might be, or any rate limits. For a security testing tool, this leaves significant behavioral questions unanswered.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.