curl --request GET \
  --url https://api.asksurf.ai/gateway/v1/prediction-market/kalshi/markets

{
  "data": [
    {
      "event_ticker": "<string>",
      "last_day_open_interest": 123,
      "market_ticker": "<string>",
      "notional_volume_usd": 123,
      "open_interest": 123,
      "payout_type": "<string>",
      "status": "<string>",
      "title": "<string>",
      "total_volume": 123,
      "category": "<string>",
      "close_time": 123,
      "end_time": 123,
      "event_title": "<string>",
      "result": "<string>",
      "start_time": 123,
      "subcategory": "<string>"
    }
  ],
  "meta": {
    "cached": true,
    "credits_used": 123,
    "limit": 123,
    "offset": 123,
    "total": 123
  },
  "$schema": "<string>"
}