curl --request POST \
  --url https://realtime-api.voiceflow.com/v1/stable/function/<functionID>/check \
  --header 'Authorization: Bearer <token>'
  --header 'Content-Type: application/json' \
  --data '{
  "cases": [
    {
      "name": "<string>",
      "inputs": {},
      "expectPath": "<string>",
      "expectOutputs": {}
    }
  ]
}'

const response = await fetch('https://realtime-api.voiceflow.com/v1/stable/function/<functionID>/check?projectID=<projectID>&environmentAlias=<environmentAlias>', {
  method: 'POST',
  headers: {
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "cases": [
      {
        "name": "<string>",
        "inputs": {},
        "expectPath": "<string>",
        "expectOutputs": {}
      }
    ]
  }),
});
const data = await response.json();

import requests

response = requests.post(
    'https://realtime-api.voiceflow.com/v1/stable/function/<functionID>/check?projectID=<projectID>&environmentAlias=<environmentAlias>',
    headers={'Authorization': 'Bearer <token>'},
    json={
      "cases": [
        {
          "name": "<string>",
          "inputs": {},
          "expectPath": "<string>",
          "expectOutputs": {}
        }
      ]
    },
)
data = response.json()

vf function check --function-id <functionID> --project-id <projectID> --environment-alias <environmentAlias> \
  < body.json