Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of disclosing behavior. It explicitly reveals a key side effect: original records are marked as folded, indicating they are not deleted. It does not mention reversibility, permissions, or return details, but the core state change is transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.