Does the description explain when to use this tool, when not to, or what alternatives exist?
The phrase 'Use only to retrieve another page' clearly states when the tool is appropriate, and 'does not filter, aggregate, transform, or refresh data' excludes common misuse. It does not explicitly name alternative tools for initial fetching or transformation, but the intended usage is unmistakable.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.