Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage (updating an existing page) but does not explicitly contrast with alternatives or state prerequisites (e.g., page must exist, page_id from list_pages). While the schema mentions page_id from list_pages, the description itself offers no guidance on when to choose this tool over others.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.