Does the description explain when to use this tool, when not to, or what alternatives exist?
The phrase 'incoming friend request' implies the tool is for accepting requests you received, contrasting with sending or canceling your own. However, the description does not explicitly state when to use this tool versus alternatives like reject_friend_request, nor does it mention any prerequisites (e.g., the request must exist).
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.