Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the burden, but 'Show' reasonably conveys a read-only, non-destructive lookup. It does not say whether the directory must already exist, whether the path is created, or what the returned value looks like, though for a trivial zero-param getter these gaps are minor.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.