curl --request GET \
  --url https://api.agg.market/categories \
  --header 'x-app-id: <api-key>'

{
  "data": [
    {
      "id": "<string>",
      "name": "<string>",
      "parentId": "<string>",
      "eventCount": 123
    }
  ],
  "nextCursor": "<string>",
  "hasMore": true
}