Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must carry the full burden of behavioral disclosure. It only states that it sets a checkbox-like field, implying a mutation, but does not disclose what happens if value is omitted (default false), whether it toggles or sets an absolute value, side effects, or error conditions. This is minimal and insufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.