Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It merely states 'find element by title attribute' and does not mention whether it returns a locator, waits for the element, handles multiple matches, or errors if not found. No behavioral details are disclosed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.