curl --request POST \
  --url https://api.helicone.ai/v1/customer/{customerId}/usage/query \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{}'

{
  "id": "<string>",
  "name": "<string>",
  "cost": 123,
  "count": 123,
  "prompt_tokens": 123,
  "completion_tokens": 123
}