Credits
List your prepaid credit balances for every kit type your business can order. The returned type identifier is the value to pass as kit_types[].kitType when creating orders.
List credit balances
Returns one entry per kit type your business has access to, with the current credit balance for each. The `type` value is the public kit type identifier — pass it to `POST /api/v1/create-order` as `kit_types[].kitType`. Orders draw down these balances before any payment fallback applies.