curl --request GET \
  --url https://{defaultHost}/v1/orders/filter_schema \
  --header 'Authorization: Bearer <token>'

{
  "object": "rule_schema",
  "schema_id": "order",
  "attributes": [
    {
      "key": "live_mode",
      "metadata": false,
      "supported_values": [],
      "type": "boolean",
      "operators": [
        "is",
        "is_not"
      ]
    },
    {
      "key": "created_at",
      "metadata": false,
      "supported_values": [],
      "type": "date",
      "operators": [
        "is",
        "is_not",
        "is_after",
        "is_before",
        "is_on_or_after",
        "is_on_or_before"
      ]
    },
    {
      "key": "order_type",
      "metadata": false,
      "supported_values": [
        "checkout",
        "subscription"
      ],
      "type": "string",
      "operators": [
        "is",
        "is_not",
        "contains",
        "not_contains",
        "start_with",
        "end_with"
      ]
    },
    {
      "key": "status",
      "metadata": false,
      "supported_values": [
        "draft",
        "processing",
        "paid",
        "payment_failed",
        "void"
      ],
      "type": "string",
      "operators": [
        "is",
        "is_not",
        "contains",
        "not_contains",
        "start_with",
        "end_with"
      ]
    },
    {
      "key": "fulfillment_status",
      "metadata": false,
      "supported_values": [
        "unfulfilled",
        "partially_fulfilled",
        "fulfilled"
      ],
      "type": "string",
      "operators": [
        "is",
        "is_not",
        "contains",
        "not_contains",
        "start_with",
        "end_with"
      ]
    },
    {
      "key": "shipment_status",
      "metadata": false,
      "supported_values": [
        "unshipped",
        "label_purchased",
        "partially_shipped",
        "shipped",
        "in_transit",
        "delivered",
        "unshippable"
      ],
      "type": "string",
      "operators": [
        "is",
        "is_not",
        "contains",
        "not_contains",
        "start_with",
        "end_with"
      ]
    },
    {
      "key": "return_status",
      "metadata": false,
      "supported_values": [
        "not_returned",
        "return_request_open",
        "partially_returned",
        "returned"
      ],
      "type": "string",
      "operators": [
        "is",
        "is_not",
        "contains",
        "not_contains",
        "start_with",
        "end_with"
      ]
    },
    {
      "key": "checkout.email",
      "metadata": false,
      "supported_values": [],
      "type": "string",
      "operators": [
        "is",
        "is_not",
        "contains",
        "not_contains",
        "start_with",
        "end_with"
      ]
    },
    {
      "key": "customer.id",
      "metadata": false,
      "supported_values": [],
      "type": "uuid",
      "operators": [
        "is",
        "is_not"
      ]
    },
    {
      "key": "customer.created_at",
      "metadata": false,
      "supported_values": [],
      "type": "date",
      "operators": [
        "is",
        "is_not",
        "is_after",
        "is_before",
        "is_on_or_after",
        "is_on_or_before"
      ]
    },
    {
      "key": "products.id",
      "metadata": false,
      "supported_values": [],
      "type": "uuid",
      "operators": [
        "is",
        "is_not"
      ]
    },
    {
      "key": "products.name",
      "metadata": false,
      "supported_values": [],
      "type": "string",
      "operators": [
        "is",
        "is_not",
        "contains",
        "not_contains",
        "start_with",
        "end_with"
      ]
    },
    {
      "key": "prices.id",
      "metadata": false,
      "supported_values": [],
      "type": "uuid",
      "operators": [
        "is",
        "is_not"
      ]
    },
    {
      "key": "prices.name",
      "metadata": false,
      "supported_values": [],
      "type": "string",
      "operators": [
        "is",
        "is_not",
        "contains",
        "not_contains",
        "start_with",
        "end_with"
      ]
    },
    {
      "key": "prices.price_type",
      "metadata": false,
      "supported_values": [
        "one_time",
        "finite_recurring",
        "infinite_recurring"
      ],
      "type": "string",
      "operators": [
        "is",
        "is_not",
        "contains",
        "not_contains",
        "start_with",
        "end_with"
      ]
    }
  ]
}