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 does not explain what 'page load complete' means (DOMContentLoaded, load event, network idle), what occurs on timeout, whether errors are thrown, or if it waits for frames/subresources. This is a critical gap for a blocking operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.