Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden of behavioral disclosure. It adds the key non-destructive trait ('without deleting it'), which is useful. However, it does not disclose reversibility, effects on breakpoint ranges, or error behavior, leaving gaps in expected behavioral transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.