curl --request GET \
  --url https://api.altostrat.io/radius/attributes \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "operators": [
      {
        "value": ":=",
        "description": "Set to value (assignment)"
      }
    ],
    "tags": [
      "session",
      "common",
      "isp"
    ],
    "attributes_by_vendor": {}
  }
}