Does the description explain when to use this tool, when not to, or what alternatives exist?
The description clearly indicates this is for fetching a single guide when the slug is already known, and the singular framing contrasts with the sibling list tools. However, it does not explicitly name alternatives or state when not to use it, so it stops short of full routing guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.