before do
  headers 'Access-Control-Allow-Origin' => '*',
          'Access-Control-Allow-Methods' => ['OPTIONS', 'GET', 'POST'],
          'Access-Control-Allow-Headers' => ['Content-Type', 'Accept', 'X-Requested-With', 'access_token']

  env['rack.errors'] = error_logger
end

$.ajax({
        type: "POST",
        url: "http://findaspot.multimediatechnology.at/api/",
        data: json,
        dataType: "json",
        success: function (data) {
            console.log('Success!');
            console.log(data);
        },
        error: function(xhr, status, error) {
            var err = eval("(" + xhr.responseText + ")");
            alert(err.Message);
        }
    })

XMLHttpRequest cannot load http://findaspot.multimediatechnology.at/api/. Invalid HTTP status code 404