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

{
  "tags": [
    {
      "tag_key": "app",
      "hidden": false,
      "providers": [
        "aws",
        "azure",
        "custom_provider:accss_crdntl_14b098088d3fe0ea"
      ]
    },
    {
      "tag_key": "environment",
      "hidden": false,
      "providers": [
        "aws",
        "azure",
        "custom_provider:accss_crdntl_14b098088d3fe0ea"
      ]
    }
  ]
}