curl --request GET \
  --url https://{tenant}/api/apis/categories \
  --header 'Authorization: Bearer <token>'

{
  "categories": [
    {
      "count": 3,
      "name": "tag2"
    },
    {
      "count": 1,
      "name": "tag2"
    },
    {
      "count": 1,
      "name": "tag3"
    }
  ]
}