From 7817632847116c50166f0a436bdebfcdf68f5e8b Mon Sep 17 00:00:00 2001
From: aaron <>
Date: Tue, 24 Mar 2026 21:02:31 +0800
Subject: [PATCH] update

---
 backend/app/crypto_agent/crypto_agent.py       | 18 +++++++++++++++---
 .../services/hyperliquid_trading_service.py    | 14 ++++++++++++++
 2 files changed, 29 insertions(+), 3 deletions(-)

diff --git a/backend/app/crypto_agent/crypto_agent.py b/backend/app/crypto_agent/crypto_agent.py
index 4c62247..7adab17 100644
--- a/backend/app/crypto_agent/crypto_agent.py
+++ b/backend/app/crypto_agent/crypto_agent.py
@@ -2,6 +2,7 @@
 加密货币交易智能体 - 主控制器（LLM 驱动版）
 """
 import asyncio
+import math
 from typing import Dict, Any, List, Optional
 from datetime import datetime, timedelta
 import pandas as pd
@@ -2073,6 +2074,18 @@ class CryptoAgent:
             # 根据当前价格计算数量
             size = max_position_usd / current_price
 
+            # 按 Hyperliquid 要求的精度截断（szDecimals）
+            # ETH=3位, BTC=5位 等，必须截断而非四舍五入，避免超出允许仓位
+            sz_decimals = self.hyperliquid.get_sz_decimals(decision.get('symbol', '').replace('USDT', ''))
+            factor = 10 ** sz_decimals
+            size = math.floor(size * factor) / factor  # 截断，不四舍五入
+
+            # 最小下单量检查
+            min_size = 1 / factor
+            if size < min_size:
+                logger.warning(f"⚠️  计算仓位 {size} 低于最小下单量 {min_size}，取消开仓")
+                return 0
+
             logger.info(f"💰 仓位计算:")
             logger.info(f"   账户价值: ${current_balance:.2f}")
             logger.info(f"   可用余额: ${available_balance:.2f}")
@@ -2080,10 +2093,9 @@ class CryptoAgent:
             logger.info(f"   当前总杠杆: {current_total_leverage:.2f}x")
             logger.info(f"   计划杠杆: {leverage}x")
             logger.info(f"   最大可开仓金额: ${max_position_usd:.2f} (限制: min(配置${max_by_config:.0f}, 可用${max_by_available:.0f}, 杠杆${max_by_total_leverage:.0f}))")
-            logger.info(f"   计算数量: {size:.6f} @ ${current_price:.2f}")
+            logger.info(f"   计算数量: {size} (精度: {sz_decimals}位) @ ${current_price:.2f}")
 
-            # 四舍五入到合理精度
-            return round(size, 6)
+            return size
 
         except Exception as e:
             logger.error(f"计算仓位大小失败: {e}")
diff --git a/backend/app/services/hyperliquid_trading_service.py b/backend/app/services/hyperliquid_trading_service.py
index c0fbe2f..14b5161 100644
--- a/backend/app/services/hyperliquid_trading_service.py
+++ b/backend/app/services/hyperliquid_trading_service.py
@@ -537,6 +537,20 @@ class HyperliquidTradingService:
                 return pos
         return None
 
+    def get_sz_decimals(self, symbol: str) -> int:
+        """
+        获取交易对的数量精度（szDecimals）
+
+        Hyperliquid 要求订单数量必须符合各币种精度，否则报 'Order has invalid size'
+        例如 ETH=3（最小 0.001），BTC=5（最小 0.00001）
+        """
+        try:
+            asset = self.info.name_to_asset(symbol)
+            return self.info.asset_to_sz_decimals.get(asset, 3)
+        except Exception:
+            logger.warning(f"获取 {symbol} szDecimals 失败，使用默认值 3")
+            return 3
+
 
 # 单例
 _hyperliquid_service_instance = None