Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description carries the full behavioral disclosure burden. It does reveal a key safety behavior—no content is sent—and indicates that only size and hash are gathered, which is useful. However, it does not state whether the operation is read-only, what it returns, whether it scans subfolders, or whether any local state is modified.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.