Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden of disclosing behavior. It states that the tool writes revision title/content/excerpt back to the parent page, making clear it mutates the page. However, it does not disclose potential side effects (e.g., whether the current content is overwritten without undo, whether a new revision is created, or permission requirements), leaving some behavioral ambiguity.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.