Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description must carry the full burden of behavioral disclosure. It mentions the authorized root constraint, which is a useful scoping detail, but it does not describe error behavior (e.g., file not found, unauthorized path), whether the operation is read-only, or what the return value looks like. No contradiction with annotations since none exist.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.