Вызываю этот метод:
https://api.vk.com/method/friends.add?user_id=$id&follow=0&text=&access_token=$t&v=5.120
id & token заменены переменными. Ответ:
{"error":{"error_code":15,"error_msg":"Access denied: no access to call this method","request_params":[{"key":"user_id","value":"********"},{"key":"follow","value":"0"},{"key":"text","value":""},{"key":"v","value":"5.120"},{"key":"method","value":"friends.add"},{"key":"oauth","value":"1"}]}}
Токен выпускаю через Implicit Flow с параметром Friends:
https://oauth.vk.com/authorize?client_id=huisasi&redirect_uri=https://devnow.ca/app.php&display=popup&response_type=token&scope=friends,offline