Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It names two actions (update and push) but does not explain side effects, permissions, whether the pushed link replaces a previous one, or what 'push to mobile' actually entails. This is a minimal summary, not a transparent behavioral description.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.