Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must carry the burden of explaining side effects, auth needs, or whether this operation is destructive (e.g., overwriting current memory). It only states 'Recover exact archived memory' without elaborating on behavior, which is a significant gap for a memory-altering operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.