curl --request GET \
  --url https://api.vantage.sh/v2/cost_providers \
  --header 'Authorization: Bearer <token>'

{
  "cost_providers": [
    {
      "name": "AWS",
      "key": "aws"
    }
  ],
  "links": {
    "self": "<string>",
    "first": "<string>",
    "next": "<string>",
    "last": "<string>",
    "prev": "<string>"
  }
}