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 never states that this is a read-only, non-mutating operation, says nothing about the default result size or the 50-row ceiling, and gives no hint about what the returned rows look like — all significant gaps for a tool with zero structured coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.