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

{
  "data": [
    {
      "classification": "<string>",
      "price": 123,
      "timestamp": 123,
      "value": 123
    }
  ],
  "meta": {
    "cached": true,
    "credits_used": 123
  },
  "$schema": "<string>"
}