Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations available, the description must fully disclose behavior. It states the action and a side effect (saving an artifact), but does not explain what 'artifact' means, whether the profiler must be running, failure conditions, or any other consequences. This is minimal disclosure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.