{"auth":"Pass header X-API-Key or query param api_key on every /api/* request.","docs":"/docs","endpoints":{"/api/all":"Get both options and volatility-greeks data","/api/download":"Authenticated CSV download for options or volatility-greeks","/api/options":"Get options prices (Calls & Puts)","/api/volatility-greeks":"Get volatility & greeks data"},"message":"Barchart Futures Options Data API","params":{"format":"json (default) or csv \u2014 works on all endpoints","page":"Download page: options or volatility-greeks (for /api/download)","symbol":"Futures symbol (default: GCM26)"}}