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 adds useful context about the exact GSC property URL requirement and domain property coverage, and explains the sitemap_index behavior. However, it does not disclose what 'detailed information' entails, potential errors, or any limitations, leaving some behavioral aspects ambiguous.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.