Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the behavioral burden. It conveys a read-only operation ('Get') and adds context about the case number format (e.g., 'PRC/2023/1'). However, it does not disclose possible error behavior, return format, or any limitations, which is a minor gap for a lookup tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.