Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It clearly indicates a read operation returning the full flow definition as JSON, which implies no side effects. However, it does not cover error behavior, whether flowId is actually required despite the schema listing zero required parameters, or any permission requirements.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.