diff --git a/main/xiaozhi-server/core/handle/mcpHandle.py b/main/xiaozhi-server/core/handle/mcpHandle.py
index cab8a96b..b5fd9372 100644
--- a/main/xiaozhi-server/core/handle/mcpHandle.py
+++ b/main/xiaozhi-server/core/handle/mcpHandle.py
@@ -1,7 +1,7 @@
 import json
 import asyncio
 from concurrent.futures import Future
-from core.utils.util import get_vision_url
+from core.utils.util import get_vision_url, sanitize_tool_name
 from core.utils.auth import AuthToken
 
 TAG = __name__
@@ -11,7 +11,8 @@ class MCPClient:
     """MCPClient，用于管理MCP状态和工具"""
 
     def __init__(self):
-        self.tools = {}  # Dictionary for O(1) lookup
+        self.tools = {}  # sanitized_name -> tool_data
+        self.name_mapping = {}
         self.ready = False
         self.call_results = {}  # To store Futures for tool call responses
         self.next_id = 1
@@ -30,7 +31,7 @@ class MCPClient:
         result = []
         for tool_name, tool_data in self.tools.items():
             function_def = {
-                "name": tool_data["name"],
+                "name": tool_name,
                 "description": tool_data["description"],
                 "parameters": {
                     "type": tool_data["inputSchema"].get("type", "object"),
@@ -53,7 +54,9 @@ class MCPClient:
 
     async def add_tool(self, tool_data: dict):
         async with self.lock:
-            self.tools[tool_data["name"]] = tool_data
+            sanitized_name = sanitize_tool_name(tool_data["name"])
+            self.tools[sanitized_name] = tool_data
+            self.name_mapping[sanitized_name] = tool_data["name"]
             self._cached_available_tools = (
                 None  # Invalidate the cache when a tool is added
             )
@@ -333,11 +336,12 @@ async def call_mcp_tool(
             raise ValueError(f"参数处理失败: {str(e)}")
         raise e
 
+    actual_name = mcp_client.name_mapping.get(tool_name, tool_name)
     payload = {
         "jsonrpc": "2.0",
         "id": tool_call_id,
         "method": "tools/call",
-        "params": {"name": tool_name, "arguments": arguments},
+        "params": {"name": actual_name, "arguments": arguments},
     }
 
     conn.logger.bind(tag=TAG).info(
diff --git a/main/xiaozhi-server/core/mcp/MCPClient.py b/main/xiaozhi-server/core/mcp/MCPClient.py
index b6b6335f..6af5f058 100644
--- a/main/xiaozhi-server/core/mcp/MCPClient.py
+++ b/main/xiaozhi-server/core/mcp/MCPClient.py
@@ -9,6 +9,7 @@ from mcp import ClientSession, StdioServerParameters
 from mcp.client.stdio import stdio_client
 from mcp.client.sse import sse_client
 from config.logger import setup_logging
+from core.utils.util import sanitize_tool_name
 
 TAG = __name__
 
@@ -23,7 +24,9 @@ class MCPClient:
         self._shutdown_evt = asyncio.Event()
 
         self.session: Optional[ClientSession] = None
-        self.tools: List = []
+        self.tools: List = []  # original tool objects
+        self.tools_dict: Dict[str, Any] = {}
+        self.name_mapping: Dict[str, str] = {}
 
     async def initialize(self):
         if self._worker_task:
@@ -32,7 +35,7 @@ class MCPClient:
         await self._ready_evt.wait()
 
         self.logger.bind(tag=TAG).info(
-            f"Connected, tools = {[t.name for t in self.tools]}"
+            f"Connected, tools = {[name for name in self.name_mapping.values()]}"
         )
 
     async def cleanup(self):
@@ -48,27 +51,28 @@ class MCPClient:
             self._worker_task = None
 
     def has_tool(self, name: str) -> bool:
-        return any(t.name == name for t in self.tools)
+        return name in self.tools_dict
 
     def get_available_tools(self):
         return [
             {
                 "type": "function",
                 "function": {
-                    "name": t.name,
-                    "description": t.description,
-                    "parameters": t.inputSchema,
+                    "name": name,
+                    "description": tool.description,
+                    "parameters": tool.inputSchema,
                 },
             }
-            for t in self.tools
+            for name, tool in self.tools_dict.items()
         ]
 
     async def call_tool(self, name: str, args: dict):
         if not self.session:
             raise RuntimeError("MCPClient not initialized")
 
+        real_name = self.name_mapping.get(name, name)
         loop = self._worker_task.get_loop()
-        coro = self.session.call_tool(name, args)
+        coro = self.session.call_tool(real_name, args)
 
         if loop is asyncio.get_running_loop():
             return await coro
@@ -123,6 +127,10 @@ class MCPClient:
 
                 # 获取工具
                 self.tools = (await self.session.list_tools()).tools
+                for t in self.tools:
+                    sanitized = sanitize_tool_name(t.name)
+                    self.tools_dict[sanitized] = t
+                    self.name_mapping[sanitized] = t.name
 
                 self._ready_evt.set()
 
diff --git a/main/xiaozhi-server/core/utils/util.py b/main/xiaozhi-server/core/utils/util.py
index b492529c..cf52bfc2 100644
--- a/main/xiaozhi-server/core/utils/util.py
+++ b/main/xiaozhi-server/core/utils/util.py
@@ -976,3 +976,8 @@ def is_valid_image_file(file_data: bytes) -> bool:
             return True
 
     return False
+
+
+def sanitize_tool_name(name: str) -> str:
+    """Sanitize tool names for OpenAI compatibility."""
+    return re.sub(r"[^a-zA-Z0-9_-]", "_", name)