Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden, and it only discloses which underlying commands run. It does not state that the operation is read-only and non-destructive to the target file, whether external tooling must be installed, or how results from the three checks are combined or ordered. An agent gets the mechanics but not the safety or execution profile.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.