Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure, but it only defines the search scope. It does not mention whether results are grouped by type, whether the search is fuzzy or exact, how limit applies, or what happens when there are no matches. This is a significant lack of transparency for a search tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.