diff --git a/README.md b/README.md
index 2f41e31..356effc 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ _✨ 支持多API预设、MCP协议、联网搜索、视觉模型的AI群聊插
     <img src="https://img.shields.io/pypi/v/nonebot-plugin-llmchat.svg" alt="pypi">
 </a>
 <img src="https://img.shields.io/badge/python-3.10+-blue.svg" alt="python">
+<a href="https://deepwiki.com/FuQuan233/nonebot-plugin-llmchat"><img src="https://deepwiki.com/badge.svg" alt="Ask DeepWiki"></a>
 
 </div>
 
@@ -108,6 +109,7 @@ _✨ 支持多API预设、MCP协议、联网搜索、视觉模型的AI群聊插
 | LLMCHAT__RANDOM_TRIGGER_PROB | 否 | 0.05 | 默认随机触发概率 [0, 1] |
 | LLMCHAT__DEFAULT_PROMPT | 否 | 你的回答应该尽量简洁、幽默、可以使用一些语气词、颜文字。你应该拒绝回答任何政治相关的问题。 | 默认提示词 |
 | LLMCHAT__BLACKLIST_USER_IDS | 否 | [] | 黑名单用户ID列表，机器人将不会处理黑名单用户的消息 |
+| LLMCHAT__IGNORE_PREFIXES | 否 | [] | 需要忽略的消息前缀列表，匹配到这些前缀的消息不会处理 |
 | LLMCHAT__MCP_SERVERS | 否 | {} | MCP服务器配置，具体见下表 |
 
 其中LLMCHAT__API_PRESETS为一个列表，每项配置有以下的配置项
diff --git a/nonebot_plugin_llmchat/__init__.py b/nonebot_plugin_llmchat/__init__.py
index 2fb78fb..d3c6605 100755
--- a/nonebot_plugin_llmchat/__init__.py
+++ b/nonebot_plugin_llmchat/__init__.py
@@ -169,6 +169,12 @@ async def is_triggered(event: GroupMessageEvent) -> bool:
     if event.user_id in plugin_config.blacklist_user_ids:
         return False
 
+    # 忽略特定前缀的消息
+    msg_text = event.get_plaintext().strip()
+    for prefix in plugin_config.ignore_prefixes:
+        if msg_text.startswith(prefix):
+            return False
+
     state.past_events.append(event)
 
     # 原有@触发条件
@@ -313,8 +319,10 @@ async def process_messages(group_id: int):
             content: list[ChatCompletionContentPartParam] = []
 
             # 将机器人错过的消息推送给LLM
-            for ev in state.past_events:
-                content.append({"type": "text", "text": format_message(ev)})
+            past_events_snapshot = list(state.past_events)
+            for ev in past_events_snapshot:
+                text_content = format_message(ev)
+                content.append({"type": "text", "text": text_content})
 
                 # 将消息中的图片转成 base64
                 if preset.support_image:
@@ -378,7 +386,7 @@ async def process_messages(group_id: int):
                     new_messages.append({
                         "role": "tool",
                         "tool_call_id": tool_call.id,
-                        "content": str(result.content)
+                        "content": str(result)
                     })
 
                 # 将工具调用的结果交给 LLM
diff --git a/nonebot_plugin_llmchat/config.py b/nonebot_plugin_llmchat/config.py
index fa873d5..d658875 100755
--- a/nonebot_plugin_llmchat/config.py
+++ b/nonebot_plugin_llmchat/config.py
@@ -44,6 +44,10 @@ class ScopedConfig(BaseModel):
     )
     mcp_servers: dict[str, MCPServerConfig] = Field({}, description="MCP服务器配置")
     blacklist_user_ids: set[int] = Field(set(), description="黑名单用户ID列表")
+    ignore_prefixes: list[str] = Field(
+        default_factory=list,
+        description="需要忽略的消息前缀列表，匹配到这些前缀的消息不会处理"
+    )
 
 
 class Config(BaseModel):
diff --git a/nonebot_plugin_llmchat/mcpclient.py b/nonebot_plugin_llmchat/mcpclient.py
index 7031d34..55e1b44 100644
--- a/nonebot_plugin_llmchat/mcpclient.py
+++ b/nonebot_plugin_llmchat/mcpclient.py
@@ -1,3 +1,4 @@
+import asyncio
 from contextlib import AsyncExitStack
 
 from mcp import ClientSession, StdioServerParameters
@@ -64,9 +65,13 @@ class MCPClient:
         server_name, real_tool_name = tool_name.split("___")
         logger.info(f"正在服务器[{server_name}]上调用工具[{real_tool_name}]")
         session = self.sessions[server_name]
-        response = await session.call_tool(real_tool_name, tool_args)
+        try:
+            response = await asyncio.wait_for(session.call_tool(real_tool_name, tool_args), timeout=30)
+        except asyncio.TimeoutError:
+            logger.error(f"调用工具[{real_tool_name}]超时")
+            return f"调用工具[{real_tool_name}]超时"
         logger.debug(f"工具[{real_tool_name}]调用完成，响应: {response}")
-        return response
+        return response.content
 
     def get_friendly_name(self, tool_name: str):
         server_name, real_tool_name = tool_name.split("___")
diff --git a/pyproject.toml b/pyproject.toml
index 02c7bcf..7c17df2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "nonebot-plugin-llmchat"
-version = "0.2.3"
+version = "0.2.5"
 description = "Nonebot AI group chat plugin supporting multiple API preset configurations"
 license = "GPL"
 authors = ["FuQuan i@fuquan.moe"]