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buy and sell volume data for crypto market orders from a specified exchange and trading pair via x402 USDC micropayment.","exampleAgentPrompt":"Show me the buy and sell volume breakdown for BTCUSDT on Binance for the last 1-hour intervals — I want to see which side has more pressure right now.","exampleUseCases":null,"resultDescription":"Returns a JSON object with code 0 and a data array containing buy and sell volume entries for the queried symbol, exchange, interval, and time range.","failureModes":["Invalid or unsupported symbol returns empty data array","Unsupported exchange name causes empty or error response","Invalid interval value returns no data","Payment failure (402) if USDC wallet has insufficient funds","Missing required parameters may result in empty data or error","Rate limiting or upstream CoinAnk unavailability causes failure"],"whenToPreferThis":"Use this endpoint when you need granular buy vs. sell volume data for a specific crypto trading pair and exchange, 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