diff --git a/bots/mcp_server.py b/bots/mcp_server.py
index 0111d640..2aff2d21 100644
--- a/bots/mcp_server.py
+++ b/bots/mcp_server.py
@@ -411,6 +411,18 @@ class LiveBridge(MT5Bridge):
             log.warning(f"symbol_select({name}) failed: {self.mt5.last_error()}")
         return name
 
+    def _filling(self, symbol: str) -> int:
+        """Filling-Modus, den der Broker für dieses Symbol erlaubt.
+        symbol_info.filling_mode ist ein Bitfeld: 1 = FOK, 2 = IOC erlaubt.
+        Rückgabe als ORDER_FILLING_*: 0 = FOK, 1 = IOC, 2 = RETURN."""
+        override = os.getenv("ORDER_FILLING")          # optional: FOK / IOC / RETURN
+        if override:
+            return {"FOK": 0, "IOC": 1, "RETURN": 2}[override.upper()]
+        info = self.mt5.symbol_info(symbol)
+        flags = int(getattr(info, "filling_mode", 0) or 0)
+        mode = 1 if flags & 2 else (0 if flags & 1 else 2)
+        return mode
+
     async def symbol_info(self, symbol: str) -> Dict[str, Any]:
         await self.ensure()
         symbol = self._resolve(symbol)
@@ -428,6 +440,8 @@ class LiveBridge(MT5Bridge):
             "volume_min": info.volume_min,
             "volume_max": info.volume_max,
             "volume_step": info.volume_step,
+            "filling_mode": info.filling_mode,
+            "order_filling": {0: "FOK", 1: "IOC", 2: "RETURN"}[self._filling(info.name)],
             "description": info.description,
         }
 
@@ -628,16 +642,17 @@ class LiveBridge(MT5Bridge):
         request = {
             "action": 1,  # TRADE_ACTION_DEAL
             "symbol": symbol,
-            "volume": volume,
+            # MetaTrader5 verlangt Floats – ein int 0 ergibt (-2, 'Invalid "sl" argument')
+            "volume": float(volume),
             "type": order_type,
-            "price": price,
-            "sl": sl,
-            "tp": tp,
+            "price": float(price),
+            "sl": float(sl or 0.0),
+            "tp": float(tp or 0.0),
             "deviation": 20,
             "magic": 202604,
             "comment": comment or "xgboost_sweep",
             "type_time": 0,  # ORDER_TIME_GTC
-            "type_filling": 1,  # ORDER_FILLING_IOC
+            "type_filling": self._filling(symbol),
         }
 
         result = self.mt5.order_send(request)
@@ -671,9 +686,8 @@ class LiveBridge(MT5Bridge):
             "action": 6,  # TRADE_ACTION_SLTP
             "position": ticket,
             "symbol": pos.symbol,
-            "sl": sl if sl is not None else pos.sl,
-            "tp": tp if tp is not None else pos.tp,
-            "type_filling": 1,  # ORDER_FILLING_IOC (Vantage)
+            "sl": float(sl if sl is not None else pos.sl),
+            "tp": float(tp if tp is not None else pos.tp),
         }
 
         result = self.mt5.order_send(request)
@@ -703,15 +717,15 @@ class LiveBridge(MT5Bridge):
         request = {
             "action": 1,  # TRADE_ACTION_DEAL
             "symbol": pos.symbol,
-            "volume": pos.volume,
+            "volume": float(pos.volume),
             "type": close_type,
-            "position": ticket,
-            "price": close_price,
+            "position": int(ticket),
+            "price": float(close_price),
             "deviation": 20,
             "magic": 202604,
             "comment": "xgboost_close",
             "type_time": 0,
-            "type_filling": 1,
+            "type_filling": self._filling(pos.symbol),
         }
 
         result = self.mt5.order_send(request)
@@ -1077,4 +1091,4 @@ def main():
 
 
 if __name__ == "__main__":
-    main()
+    main()
\ No newline at end of file