Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It discloses a useful behavioral constraint (post_type must match rest_base), which goes beyond the raw schema. However, it does not describe the response format, error behavior (e.g., 404 for missing id), authentication requirements, or any side effects. For a read-only fetch tool this is acceptable but not comprehensive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.