Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description goes beyond the readOnly and idempotent annotations by detailing the different return states (authenticated vs. missing credentials) and the URLs provided. It does not mention any side effects or error scenarios, but since the tool is read-only and idempotent, the annotations cover core behavioral expectations, and the description adds useful outcome specifics.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.