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 states the tool returns 'полную информацию' (full information) but does not say what fields that includes, how errors or nonexistent user IDs are handled, or whether the operation is read-only. For an unannotated tool, this is a significant gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.