Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It does add useful behavior: 'returns matching memories ranked by relevance' and implies a read-only search. However, it does not disclose potential edge cases, authorization requirements, or rate limits. The behavior described is consistent but not comprehensive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.