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 does not mention whether this is a read-only operation, what the default behavior is (e.g., listing all jobs vs. only a session), or whether pagination or ordering applies. The phrase 'optionally restricted to one session' hints at filtering but does not explain default behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.