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. 'Tries the Next.js notifications page data route' hints at a fragile or unofficial implementation path, but it does not explain auth requirements, failure behavior, rate limits, or whether the operation is strictly read-only. The word 'Tries' signals unreliability without clarifying consequences.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.