{"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/contracts":"List all available contracts for a symbol/root (e.g. all gold months)","/api/data":"Unified endpoint \u2014 pass page, symbol, format","/api/options":"Get options prices (Calls & Puts)","/api/samco-bhavcopy":"Samco NSE/NSEFO/BSE/MCX bhavcopy \u2014 returns temp URLs (1h TTL)","/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":"options or volatility-greeks (for /api/data)","symbol":"gold, silver, or raw futures symbol (e.g. GCM26). Default: gold"},"swagger":"/swagger","symbol_aliases":{"gold":"GC*0","silver":"SI*0"}}