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

{
  "data": [
    {
      "funding_rate": 123,
      "long_short_ratio": 123,
      "open_interest": 123,
      "symbol": "<string>",
      "updated_at": 123,
      "volume_24h": 123,
      "volume_change_24h": 123
    }
  ],
  "meta": {
    "cached": true,
    "credits_used": 123
  },
  "$schema": "<string>"
}