Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. 'Page content is not stored' is a genuine behavioral disclosure, but it is the only one. The description omits whether the URL is fetched, what side effects occur, auth requirements, rate limits, or failure behavior — significant gaps for an unannotated tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.