curl --request GET \
  --url https://api.{your-broker}.slate-labs.com/trader-days/daily

{
  "from": "2023-12-25",
  "to": "2023-12-25",
  "days": [
    {
      "date": "2023-12-25",
      "trader_days": 123,
      "unique_traders": 123
    }
  ]
}