curl --request GET \
  --url https://api.meetcampfire.com/coa/api/vendor/summary \
  --header 'Authorization: <api-key>'

{
  "count": 123,
  "results": [
    {
      "id": 123,
      "name": "<string>",
      "total_spend": 0,
      "total_paid": 0,
      "total_unpaid": 0,
      "total_credits": 0,
      "credit_used": 0,
      "credit_available": 0,
      "transaction_debits": 0,
      "transaction_credits": 0
    }
  ],
  "next": "http://api.example.org/accounts/?offset=400&limit=100",
  "previous": "http://api.example.org/accounts/?offset=200&limit=100"
}