Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden of behavioral disclosure. It clearly indicates a read-only retrieval action, which is helpful, but it does not describe behavior for not-found cases, ambiguous name matches, or the shape of the returned memory. These are meaningful gaps for a tool with no output schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.