Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description fully carries the transparency burden. It discloses that data is re-read from contract storage on every call, implying freshness and trustlessness, which goes beyond the empty schema. It does not mention failure modes or edge cases, but for a parameterless read operation, this is adequate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.