curl --request POST \
  --url https://api.cal.com/v2/organizations/{orgId}/attributes \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "slug": "<string>",
  "options": [
    {
      "value": "<string>",
      "slug": "<string>"
    }
  ],
  "enabled": true
}
'

{
  "status": "success",
  "data": {
    "id": "attr_123",
    "teamId": 1,
    "name": "Attribute Name",
    "slug": "attribute-name",
    "enabled": true,
    "usersCanEditRelation": true
  }
}