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, but 'Import schemas from JSON data' reveals only the input format. It does not state whether the import overwrites, merges, or validates existing schemas, whether it requires authentication, or what happens on conflict — significant gaps for a potentially destructive operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.