curl --request GET \
  --url https://realtime-api.voiceflow.com/v1/stable/function/<functionID>/schema \
  --header 'Authorization: Bearer <token>'

const response = await fetch('https://realtime-api.voiceflow.com/v1/stable/function/<functionID>/schema?projectID=<projectID>&environmentAlias=<environmentAlias>', {
  method: 'GET',
  headers: {
    Authorization: 'Bearer <token>',
  },
});
const data = await response.json();

import requests

response = requests.get(
    'https://realtime-api.voiceflow.com/v1/stable/function/<functionID>/schema?projectID=<projectID>&environmentAlias=<environmentAlias>',
    headers={'Authorization': 'Bearer <token>'},
)
data = response.json()

vf function get-schema --function-id <functionID> --project-id <projectID> --environment-alias <environmentAlias>