curl --request GET \
  --url https://api.headlesscommerce.io/v1/admin/shipping_methods \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "name": "<string>",
      "description": "<string>",
      "price": {
        "amount": 123,
        "currency": "<string>"
      },
      "free_shipping_threshold": {
        "amount": 123,
        "currency": "<string>"
      },
      "is_active": true,
      "position": 123
    }
  ]
}