Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It discloses the informational contents and implies a read-only operation, but it does not explicitly state that it is read-only or mention any permissions or side effects. The disclosed content helps, but behavioral transparency is not complete.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.