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 states that the search spans all indexed registries and clarifies remote_only and limit behavior, but it does not explicitly confirm read-only semantics, authentication needs, rate limits, or result behavior. 'Search' implies a safe read operation, but the tool does not state this.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.