Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate readOnlyHint=false, destructiveHint=false, idempotentHint=true, and openWorldHint=true. The description adds that sub-pages are moved along with the page, which provides some behavioral context beyond annotations. However, it does not explain permissions, side effects, or what happens to the original location (since destructiveHint=false, it implies source is not destroyed, but that is already clear from annotations). The description does not contradict annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.