You can take the following JSON and host it on your own server.
Linking it to js-parsons with the Following format:
{{serverAddress}}html/jsparsons/jsparsons-python-custom/exercise?url=[URL to the JSON-file]
{
"name": "{{name}}",
"description": "{{description}}",
"instructions": "{{instructions}}",
"initial": "{{initial}}"
}
{{url}}