Binance MCP Server

Instructions

Implementation Reference

• binance.py:176-202 (handler)

  The main handler function for the 'cancel_order' tool, decorated with @mcp.tool() for registration. It cancels a specific order on Binance using the API, authenticating with HMAC signature.

  @mcp.tool()
  def cancel_order(symbol: str, order_id: str) -> Any:
      """
      Cancel a specific order.
  
      Args:
          symbol: The trading pair.
          order_id: Order ID to cancel.
  
      Returns:
          Cancellation result.
      """
      url = "https://api.binance.com/api/v3/order"
      timestamp = int(time.time() * 1000)
      params = {
          "symbol": symbol,
          "orderId": order_id,
          "timestamp": timestamp
      }
      query_string = "&".join([f"{k}={v}" for k, v in params.items()])
      signature = hmac.new(BINANCE_SECRET_KEY.encode(), query_string.encode(), hashlib.sha256).hexdigest()
      params["signature"] = signature
      headers = {"X-MBX-APIKEY": BINANCE_API_KEY}
      response = requests.delete(url, headers=headers, params=params)
      if response.status_code == 200:
          return {"message": f"Order {order_id} canceled"}
      return {"error": response.text}