By default, all functions on Cerebrium are accessible via authenticated POST requests, unless they are marked as private by prefixing the function name with an underscore (e.g. _private_function()). Authentication is handled using the JWT token available in the API Keys section of your dashboard. The POST request follows the structure below, where {function} is the name of the function you want to invoke. For example, in this case, the function predict() from main.py is being called. 
curl --location --request POST 'https://api.cortex.cerebrium.ai/v4/p-xxxxx/{app-name}/{function}' \
--header 'Authorization: Bearer <JWT_TOKEN>' \
--header 'Content-Type: application/json' \
--data '{
  "function_param": "data"
}'
Responses follow this format: 
{
    "run_id": "52eda406-b81b-43f5-8deb-fcf80dfsb74b",
    "run_time_ms": 326.34,
    "result": {<data>}
}
Successful requests return a status code of 200, while errors result in a status code of 500. To return custom status codes such as 422, 404, etc., include the status_code field in the JSON response from your main.py.