{"service":"Arcavio Data Provider API","version":"1.0","endpoints":[{"path":"/api/v1/exchangeInfo","method":"GET","description":"API metadata and WebSocket protocol docs"},{"path":"/api/v1/klines","method":"GET","description":"Binance-style single-symbol OHLCV klines"},{"path":"/ws/v1/stream","method":"WS","description":"Bidirectional WebSocket with SUBSCRIBE/UNSUBSCRIBE"},{"path":"/api/market/history","method":"GET","description":"Legacy multi-ticker historical data"},{"path":"/ws/realtime","method":"WS","description":"Legacy WebSocket (query-string symbols)"},{"path":"/health","method":"GET","description":"Health check"}]}