$ curl http://X.X.X.X:8888/api/kernelspecs | python -mjson.tool
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   410  100   410    0     0   400k      0 --:--:-- --:--:-- --:--:--  400k
{
    "default": "python3",
    "kernelspecs": {
        "python3": {
            "name": "python3",
            "spec": {
                "argv": [
                    "python",
                    "-m",
                    "ipykernel_launcher",
                    "-f",
                    "{connection_file}"
                ],
                "env": {},
                "display_name": "Python 3 (ipykernel)",
                "language": "python",
                "interrupt_mode": "signal",
                "metadata": {
                    "debugger": true
                }
            },
            "resources": {
                "logo-32x32": "/kernelspecs/python3/logo-32x32.png",
                "logo-64x64": "/kernelspecs/python3/logo-64x64.png"
            }
        }
    }
}