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 reveals that this is an FTS5 search, which implies full-text matching semantics and a read-only nature, and it scopes the corpus to three record types. It does not mention return shape, ordering, or any caveats, but for a search tool the core behavior is reasonably transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.