curl --request GET \
  --url http://localhost:3000/api/openapi/applications/stats \
  --header 'x-api-key: <api-key>'

{
  "total": 123,
  "byStage": [
    {
      "count": 123
    }
  ],
  "bySource": [
    {
      "source": "<string>",
      "count": 123
    }
  ]
}