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. The description only states that it crawls a sitemap to discover pages, but doesn't disclose whether it follows nested sitemaps, respects robots.txt, handles errors, or what the actual output looks like. This is completely non-transparent about side effects, rate limits, or read-only guarantees.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.