Retrieve if the user is currently a friend with a given user, if they have an outgoing friend request, and if they have an incoming friend request. The proper way to receive and accept friend request is by checking if the user has an incoming Notification of type friendRequest, and then accepting that notification.

curl -X GET "https://api.vrchat.cloud/api/1/user/string/friendStatus"

{
  "isFriend": true,
  "outgoingRequest": false,
  "incomingRequest": false
}

{
  "error": {
    "message": "\"Missing Credentials\"",
    "status_code": 401
  }
}