diff --git a/CMakeLists.txt b/CMakeLists.txt
index c89fe40..793bd0a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -78,12 +78,12 @@ if(Python3_FOUND)
 endif()
 
 # 添加简单版本的可执行文件
-add_executable(humanus_simple main_simple.cpp logger.cpp schema.cpp)
-target_link_libraries(humanus_simple PRIVATE Threads::Threads ${OPENSSL_LIBRARIES})
-if(Python3_FOUND)
-    target_link_libraries(humanus_simple PRIVATE ${Python3_LIBRARIES})
-endif()
+# add_executable(humanus_simple main_simple.cpp logger.cpp schema.cpp)
+# target_link_libraries(humanus_simple PRIVATE Threads::Threads ${OPENSSL_LIBRARIES})
+# if(Python3_FOUND)
+#     target_link_libraries(humanus_simple PRIVATE ${Python3_LIBRARIES})
+# endif()
 
 # 安装目标
 install(TARGETS humanus_cpp DESTINATION bin)
-install(TARGETS humanus_simple DESTINATION bin)
\ No newline at end of file
+# install(TARGETS humanus_simple DESTINATION bin)
\ No newline at end of file
diff --git a/agent/base.h b/agent/base.h
index 509a3c3..5f521b5 100644
--- a/agent/base.h
+++ b/agent/base.h
@@ -85,7 +85,7 @@ struct BaseAgent : std::enable_shared_from_this<BaseAgent> {
     // Execute the agent's main loop asynchronously
     virtual std::string run(const std::string& request = "") {
         if (state != AgentState::IDLE) {
-            throw std::runtime_error("Cannot run agent from state" + agent_state_map[state]);
+            throw std::runtime_error("Cannot run agent from state " + agent_state_map[state]);
         }
 
         if (!request.empty()) {
@@ -97,7 +97,15 @@ struct BaseAgent : std::enable_shared_from_this<BaseAgent> {
         while (current_step < max_steps && state == AgentState::RUNNING) {
             current_step++;
             logger->info("Executing step " + std::to_string(current_step) + "/" + std::to_string(max_steps));
-            std::string step_result = step();
+            std::string step_result;
+
+            try {
+                step_result = step();
+            } catch (const std::exception& e) {
+                logger->error("Error executing step " + std::to_string(current_step) + ": " + std::string(e.what()));
+                state = AgentState::ERROR;
+                break;
+            }
 
             if (is_stuck()) {
                 this->handle_stuck_state();
@@ -108,7 +116,11 @@ struct BaseAgent : std::enable_shared_from_this<BaseAgent> {
         if (current_step >= max_steps) {
             results.push_back("Terminated: Reached max steps (" + std::to_string(max_steps) + ")");
         }
-        state = AgentState::IDLE; // RUNNING -> IDLE
+        if (state == AgentState::ERROR) {
+            results.push_back("Terminated: Agent state is " + agent_state_map[state]);
+        } else {
+            state = AgentState::IDLE; // FINISHED -> IDLE
+        }
 
         std::string result_str = "";
 
diff --git a/agent/planning.cpp b/agent/planning.cpp
index c85569b..1e8a6c2 100644
--- a/agent/planning.cpp
+++ b/agent/planning.cpp
@@ -116,7 +116,7 @@ void PlanningAgent::update_plan_status(const std::string& tool_call_id) {
 
     try {
         // Mark the step as completed
-        available_tools.execute(
+        ToolResult result = available_tools.execute(
             "planning",
             {
                 {"command", "mark_step"}, 
@@ -127,6 +127,7 @@ void PlanningAgent::update_plan_status(const std::string& tool_call_id) {
         );
         logger->info(
             "Marked step " + std::to_string(step_index) + " as completed in plan " + active_plan_id
+            + "\n\n" + result.to_string() + "\n\n"
         );
     } catch (const std::exception& e) {
         logger->warn("Failed to update plan status: " + std::string(e.what()));
@@ -195,7 +196,7 @@ int PlanningAgent::_get_current_step_index() {
 
 // Create an initial plan based on the request.
 void PlanningAgent::create_initial_plan(const std::string& request) {
-    logger->info("Creating initial plan with ID: " + request);
+    logger->info("Creating initial plan with ID: " + active_plan_id);
 
     std::vector<Message> messages = {
         Message::user_message(
diff --git a/agent/toolcall.cpp b/agent/toolcall.cpp
index e143d0f..27e60b1 100644
--- a/agent/toolcall.cpp
+++ b/agent/toolcall.cpp
@@ -20,9 +20,9 @@ bool ToolCallAgent::think() {
     tool_calls = ToolCall::from_json_list(response["tool_calls"]);
 
     // Log response info
-    logger->info("✨ " + name + "'s thoughts:" + response["content"].dump());
+    logger->info("✨ " + name + "'s thoughts: " + response["content"].dump());
     logger->info(
-        "🛠️ " + name + " selected " + std::to_string(tool_calls.size()) + " tool(s) to use"
+        "🛠️  " + name + " selected " + std::to_string(tool_calls.size()) + " tool(s) to use"
     );
     if (tool_calls.size() > 0) {
         std::string tools_str;
@@ -114,7 +114,11 @@ std::string ToolCallAgent::execute_tool(ToolCall tool_call) {
 
     std::string name = tool_call.function.name;
     if (available_tools.tools_map.find(name) == available_tools.tools_map.end()) {
-        return "Error: Unknown tool '" + name + "'";
+        return "Error: Unknown tool '" + name + "'. Please use one of the following tools: " + 
+               std::accumulate(available_tools.tools_map.begin(), available_tools.tools_map.end(), std::string(),
+                               [](const std::string& a, const auto& b) {
+                                   return a + (a.empty() ? "" : ", ") + b.first;
+                               });
     }
 
     try {
diff --git a/config/config.toml b/config/config.toml
index f110f20..febf9bb 100644
--- a/config/config.toml
+++ b/config/config.toml
@@ -1,6 +1,6 @@
 [llm]
-model = "deepseek-chat"
-base_url = "https://api.deepseek.com"
-end_point = "/v1/chat/completions"
-api_key = "sk-93c5bfcb920c4a8aa345791d429b8536"
+model = "anthropic/claude-3.7-sonnet"
+base_url = "https://openrouter.ai"
+end_point = "/api/v1/chat/completions"
+api_key = "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"
 max_tokens = 8192
\ No newline at end of file
diff --git a/config/config.toml.bak b/config/config.toml.bak
index 08a5e6f..87abe58 100644
--- a/config/config.toml.bak
+++ b/config/config.toml.bak
@@ -3,4 +3,11 @@ model = "anthropic/claude-3.7-sonnet"
 base_url = "https://openrouter.ai"
 end_point = "/api/v1/chat/completions"
 api_key = "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"
-max_tokens = 8196
\ No newline at end of file
+max_tokens = 8192
+
+[llm]
+model = "deepseek-chat"
+base_url = "https://api.deepseek.com"
+end_point = "/v1/chat/completions"
+api_key = "sk-93c5bfcb920c4a8aa345791d429b8536"
+max_tokens = 8192
\ No newline at end of file
diff --git a/flow/base.h b/flow/base.h
index e0192d5..4208a9e 100644
--- a/flow/base.h
+++ b/flow/base.h
@@ -48,6 +48,8 @@ struct BaseFlow {
         }
     }
 
+    virtual ~BaseFlow() = default;
+
     // Get the primary agent for the flow
     std::shared_ptr<BaseAgent> primary_agent() const {
         return agents.at(primary_agent_key);
diff --git a/flow/planning.cpp b/flow/planning.cpp
index 1a18051..4299364 100644
--- a/flow/planning.cpp
+++ b/flow/planning.cpp
@@ -58,7 +58,7 @@ std::string PlanningFlow::execute(const std::string& input) {
             result += step_result + "\n";
 
             // Check if agent wants to terminate
-            if (executor->state == AgentState::FINISHED) {
+            if (executor->state == AgentState::FINISHED || executor->state == AgentState::ERROR) {
                 break;
             }
         }
@@ -197,7 +197,6 @@ void PlanningFlow::_get_current_step_info(int& current_step_index, json& step_in
             }
 
             current_step_index = i;
-            step_info = step;
             return;
         }
         current_step_index = -1;
@@ -245,7 +244,7 @@ void PlanningFlow::_mark_step_completed() {
 
     try {
         // Mark the step as completed
-        planning_tool->execute({
+        ToolResult result = planning_tool->execute({
             {"command", "mark_step"},
             {"plan_id", active_plan_id},
             {"step_index", current_step_index},
@@ -253,6 +252,7 @@ void PlanningFlow::_mark_step_completed() {
         });
         logger->info(
             "Marked step " + std::to_string(current_step_index) + " as completed in plan " + active_plan_id
+            + "\n\n" + result.to_string() + "\n\n"
         );
     } catch (const std::exception& e) {
         logger->warn("Failed to update plan status: " + std::string(e.what()));
diff --git a/flow/planning.h b/flow/planning.h
index 2fbc358..353a668 100644
--- a/flow/planning.h
+++ b/flow/planning.h
@@ -25,7 +25,7 @@ struct PlanningFlow : public BaseFlow {
         const std::vector<std::string>& executor_keys = {},
         const std::string& active_plan_id = "",
         const std::map<std::string, std::shared_ptr<BaseAgent>>& agents = {},
-        const std::vector<std::shared_ptr<BaseTool>>& tools = {},
+        const std::vector<std::shared_ptr<BaseTool>>& tools = {}, 
         const std::string& primary_agent_key = ""
     ) : BaseFlow(agents, tools, primary_agent_key),
         llm(llm),
@@ -33,11 +33,14 @@ struct PlanningFlow : public BaseFlow {
         executor_keys(executor_keys),
         active_plan_id(active_plan_id) {
         if (!llm) {
-            this->llm = LLM::get_instance();
+            this->llm = LLM::get_instance("default");
         }
         if (!planning_tool) {
             this->planning_tool = std::make_shared<PlanningTool>();
         }
+        if (active_plan_id.empty()) {
+            this->active_plan_id = "plan_" + std::to_string(std::chrono::system_clock::now().time_since_epoch().count());
+        }
         if (executor_keys.empty()) {
             for (const auto& [key, agent] : agents) {
                 this->executor_keys.push_back(key);
diff --git a/main.cpp b/main.cpp
index 77dcf3a..9b1c544 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,6 +1,7 @@
 #include "agent/manus.h"
 #include "logger.h"
 #include "prompt.h"
+#include "flow/flow_factory.h"
 
 #if defined (__unix__) || (defined (__APPLE__) && defined (__MACH__))
 #include <signal.h>
@@ -42,16 +43,52 @@ int main() {
         SetConsoleCtrlHandler(reinterpret_cast<PHANDLER_ROUTINE>(console_ctrl_handler), true);
 #endif
     }
-    Manus agent = Manus();
+    // Manus agent = Manus();
+    // while (true) {
+    //     std::string prompt;
+    //     std::cout << "Enter your prompt (or 'exit' to quit): ";
+    //     std::getline(std::cin, prompt);
+    //     if (prompt == "exit") {
+    //         logger->info("Goodbye!");
+    //         break;
+    //     }
+    //     logger->info("Processing your request...");
+    //     agent.run(prompt);
+    // }
+
+    std::shared_ptr<BaseAgent> agent_ptr = std::make_shared<Manus>();
+    std::map<std::string, std::shared_ptr<BaseAgent>> agents;
+    agents["default"] = agent_ptr;
+
+    auto flow = FlowFactory::create_flow(
+        FlowType::PLANNING,
+        nullptr,  // llm
+        nullptr,  // planning_tool
+        std::vector<std::string>{},  // executor_keys
+        "",  // active_plan_id
+        agents,  // agents
+        std::vector<std::shared_ptr<BaseTool>>{},  // tools
+        "default"  // primary_agent_key
+    );
+
     while (true) {
+        if (agent_ptr->current_step == agent_ptr->max_steps) {
+            std::cout << "Program automatically paused after " << agent_ptr->current_step << " steps." << std::endl;
+            std::cout << "Enter your prompt (like 'continue' to continue or 'exit' to quit): ";
+            agent_ptr->current_step = 0;
+        } else {
+            std::cout << "Enter your prompt (or 'exit' to quit): ";
+        }
+        
         std::string prompt;
-        std::cout << "Enter your prompt (or 'exit' to quit): ";
         std::getline(std::cin, prompt);
         if (prompt == "exit") {
             logger->info("Goodbye!");
             break;
         }
-        logger->info("Processing your request...");
-        agent.run(prompt);
+
+        std::cout << "Processing your request..." << std::endl;
+        auto result = flow->execute(prompt);
+        std::cout << result << std::endl;
     }
 }
\ No newline at end of file
diff --git a/server/python_execute.cpp b/server/python_execute.cpp
index e4bb820..216b982 100644
--- a/server/python_execute.cpp
+++ b/server/python_execute.cpp
@@ -13,6 +13,7 @@
 #include <string>
 #include <memory>
 #include <stdexcept>
+#include <mutex>
 
 // 检查是否找到Python
 #ifdef PYTHON_FOUND
@@ -24,13 +25,31 @@
  * @brief Python解释器类，用于执行Python代码
  */
 class python_interpreter {
+private:
+    // 互斥锁，确保Python解释器的线程安全
+    mutable std::mutex py_mutex;
+    bool is_initialized;
+
 public:
     /**
      * @brief 构造函数，初始化Python解释器
      */
-    python_interpreter() {
+    python_interpreter() : is_initialized(false) {
 #ifdef PYTHON_FOUND
-        Py_Initialize();
+        try {
+            Py_Initialize();
+            if (Py_IsInitialized()) {
+                is_initialized = true;
+                // 初始化线程支持
+                PyEval_InitThreads();
+                // 释放GIL，允许其他线程获取
+                PyThreadState *_save = PyEval_SaveThread();
+            } else {
+                std::cerr << "Python解释器初始化失败" << std::endl;
+            }
+        } catch (const std::exception& e) {
+            std::cerr << "Python解释器初始化异常: " << e.what() << std::endl;
+        }
 #endif
     }
 
@@ -39,7 +58,11 @@ public:
      */
     ~python_interpreter() {
 #ifdef PYTHON_FOUND
-        Py_Finalize();
+        if (is_initialized) {
+            std::lock_guard<std::mutex> lock(py_mutex);
+            Py_Finalize();
+            is_initialized = false;
+        }
 #endif
     }
 
@@ -50,77 +73,176 @@ public:
      */
     mcp::json forward(const mcp::json& input) const {
 #ifdef PYTHON_FOUND
-        if (input.contains("code") && input["code"].is_string()) {
-            std::string code = input["code"].get<std::string>();
-
-            // Create scope to manage Python objects automatically
-            PyObject *main_module = PyImport_AddModule("__main__");
-            PyObject *main_dict = PyModule_GetDict(main_module);
-            PyObject *sys_module = PyImport_ImportModule("sys");
-            PyObject *io_module = PyImport_ImportModule("io");
-            PyObject *string_io = PyObject_GetAttrString(io_module, "StringIO");
-            PyObject *sys_stdout = PyObject_CallObject(string_io, nullptr);
-            PyObject *sys_stderr = PyObject_CallObject(string_io, nullptr);
-
-            // Replace sys.stdout and sys.stderr with our StringIO objects
-            PySys_SetObject("stdout", sys_stdout);
-            PySys_SetObject("stderr", sys_stderr);
-
-            // Execute the Python code
-            PyObject *result = PyRun_String(code.c_str(), Py_file_input, main_dict, main_dict);
-            if (!result) {
-                PyErr_Print();
-            }
-            Py_XDECREF(result);
-
-            // Fetch the output and error from the StringIO object
-            PyObject *out_value = PyObject_CallMethod(sys_stdout, "getvalue", nullptr);
-            PyObject *err_value = PyObject_CallMethod(sys_stderr, "getvalue", nullptr);
-
-            // Convert Python string to C++ string
-            std::string output = PyUnicode_AsUTF8(out_value);
-            std::string error = PyUnicode_AsUTF8(err_value);
-
-            // Restore the original sys.stdout and sys.stderr
-            PySys_SetObject("stdout", PySys_GetObject("stdout"));
-            PySys_SetObject("stderr", PySys_GetObject("stderr"));
-
-            // Clean up
-            Py_DECREF(sys_stdout);
-            Py_DECREF(sys_stderr);
-            Py_DECREF(string_io);
-            Py_DECREF(io_module);
-            Py_DECREF(sys_module);
-
-            // Prepare JSON output
-            mcp::json result_json;
-            if (!output.empty()) {
-                result_json["output"] = output;
-            }
-            if (!error.empty()) {
-                result_json["error"] = error;
-            }
-
-            if (result_json.empty()) {
-                std::string last_line;
-                std::istringstream code_stream(code);
-                while (std::getline(code_stream, last_line, '\n')) {}
-                size_t pos = last_line.find_last_of(';') + 1;
-                pos = last_line.find("=") + 1;
-                while (pos < last_line.size() && isblank(last_line[pos])) {
-                    pos++;
-                }
-                if (pos != std::string::npos) {
-                    last_line = last_line.substr(pos);
-                }
-
-                return mcp::json{{"warning", "No output. Maybe try with print(" + last_line + ")?"}};
-            }
-
-            return result_json;
-        } else {
-            return mcp::json{{"error", "Invalid parameters or code not provided"}};
+        if (!is_initialized) {
+            return mcp::json{{"error", "Python解释器未正确初始化"}};
         }
+
+        // 获取GIL锁
+        std::lock_guard<std::mutex> lock(py_mutex);
+        PyGILState_STATE gstate = PyGILState_Ensure();
+
+        mcp::json result_json;
+        
+        try {
+            if (input.contains("code") && input["code"].is_string()) {
+                std::string code = input["code"].get<std::string>();
+
+                // 获取主模块和字典
+                PyObject *main_module = PyImport_AddModule("__main__");
+                if (!main_module) {
+                    PyGILState_Release(gstate);
+                    return mcp::json{{"error", "无法获取Python主模块"}};
+                }
+
+                PyObject *main_dict = PyModule_GetDict(main_module);
+                if (!main_dict) {
+                    PyGILState_Release(gstate);
+                    return mcp::json{{"error", "无法获取Python主模块字典"}};
+                }
+
+                // 导入sys和io模块
+                PyObject *sys_module = PyImport_ImportModule("sys");
+                if (!sys_module) {
+                    PyErr_Print();
+                    PyGILState_Release(gstate);
+                    return mcp::json{{"error", "无法导入sys模块"}};
+                }
+
+                PyObject *io_module = PyImport_ImportModule("io");
+                if (!io_module) {
+                    Py_DECREF(sys_module);
+                    PyErr_Print();
+                    PyGILState_Release(gstate);
+                    return mcp::json{{"error", "无法导入io模块"}};
+                }
+
+                // 获取StringIO类
+                PyObject *string_io = PyObject_GetAttrString(io_module, "StringIO");
+                if (!string_io) {
+                    Py_DECREF(io_module);
+                    Py_DECREF(sys_module);
+                    PyErr_Print();
+                    PyGILState_Release(gstate);
+                    return mcp::json{{"error", "无法获取StringIO类"}};
+                }
+
+                // 创建StringIO对象
+                PyObject *sys_stdout = PyObject_CallObject(string_io, nullptr);
+                if (!sys_stdout) {
+                    Py_DECREF(string_io);
+                    Py_DECREF(io_module);
+                    Py_DECREF(sys_module);
+                    PyErr_Print();
+                    PyGILState_Release(gstate);
+                    return mcp::json{{"error", "无法创建stdout StringIO对象"}};
+                }
+
+                PyObject *sys_stderr = PyObject_CallObject(string_io, nullptr);
+                if (!sys_stderr) {
+                    Py_DECREF(sys_stdout);
+                    Py_DECREF(string_io);
+                    Py_DECREF(io_module);
+                    Py_DECREF(sys_module);
+                    PyErr_Print();
+                    PyGILState_Release(gstate);
+                    return mcp::json{{"error", "无法创建stderr StringIO对象"}};
+                }
+
+                // 保存原始的stdout和stderr
+                PyObject *old_stdout = PySys_GetObject("stdout");
+                PyObject *old_stderr = PySys_GetObject("stderr");
+                
+                if (old_stdout) Py_INCREF(old_stdout);
+                if (old_stderr) Py_INCREF(old_stderr);
+
+                // 替换sys.stdout和sys.stderr
+                if (PySys_SetObject("stdout", sys_stdout) != 0 || 
+                    PySys_SetObject("stderr", sys_stderr) != 0) {
+                    Py_DECREF(sys_stderr);
+                    Py_DECREF(sys_stdout);
+                    Py_DECREF(string_io);
+                    Py_DECREF(io_module);
+                    Py_DECREF(sys_module);
+                    PyErr_Print();
+                    PyGILState_Release(gstate);
+                    return mcp::json{{"error", "无法设置stdout/stderr重定向"}};
+                }
+
+                // 执行Python代码
+                PyObject *result = PyRun_String(code.c_str(), Py_file_input, main_dict, main_dict);
+                if (!result) {
+                    PyErr_Print();
+                }
+                Py_XDECREF(result);
+
+                // 获取输出和错误
+                PyObject *out_value = PyObject_CallMethod(sys_stdout, "getvalue", nullptr);
+                PyObject *err_value = PyObject_CallMethod(sys_stderr, "getvalue", nullptr);
+
+                std::string output, error;
+                
+                // 安全地转换Python字符串到C++字符串
+                if (out_value && PyUnicode_Check(out_value)) {
+                    output = PyUnicode_AsUTF8(out_value);
+                }
+                
+                if (err_value && PyUnicode_Check(err_value)) {
+                    error = PyUnicode_AsUTF8(err_value);
+                }
+
+                // 恢复原始的stdout和stderr
+                if (old_stdout) {
+                    PySys_SetObject("stdout", old_stdout);
+                    Py_DECREF(old_stdout);
+                }
+                
+                if (old_stderr) {
+                    PySys_SetObject("stderr", old_stderr);
+                    Py_DECREF(old_stderr);
+                }
+
+                // 清理
+                Py_XDECREF(out_value);
+                Py_XDECREF(err_value);
+                Py_DECREF(sys_stdout);
+                Py_DECREF(sys_stderr);
+                Py_DECREF(string_io);
+                Py_DECREF(io_module);
+                Py_DECREF(sys_module);
+
+                // 准备JSON输出
+                if (!output.empty()) {
+                    result_json["output"] = output;
+                }
+                if (!error.empty()) {
+                    result_json["error"] = error;
+                }
+
+                if (result_json.empty()) {
+                    std::string last_line;
+                    std::istringstream code_stream(code);
+                    while (std::getline(code_stream, last_line, '\n')) {}
+                    size_t pos = last_line.find_last_of(';') + 1;
+                    pos = last_line.find("=") + 1;
+                    while (pos < last_line.size() && isblank(last_line[pos])) {
+                        pos++;
+                    }
+                    if (pos != std::string::npos) {
+                        last_line = last_line.substr(pos);
+                    }
+
+                    result_json["warning"] = "No output. Maybe try with print(" + last_line + ")?";
+                }
+            } else {
+                result_json["error"] = "Invalid parameters or code not provided";
+            }
+        } catch (const std::exception& e) {
+            result_json["error"] = std::string("Python执行异常: ") + e.what();
+        }
+
+        // 释放GIL
+        PyGILState_Release(gstate);
+        return result_json;
 #else
         return mcp::json{{"error", "Python interpreter not available"}};
 #endif
@@ -133,7 +255,6 @@ static python_interpreter interpreter;
 // Python执行工具处理函数
 mcp::json python_execute_handler(const mcp::json& args) {
     if (!args.contains("code")) {
-        std::cout << args.dump() << std::endl;
         throw mcp::mcp_exception(mcp::error_code::invalid_params, "缺少'code'参数");
     }
     
@@ -141,25 +262,9 @@ mcp::json python_execute_handler(const mcp::json& args) {
         // 使用Python解释器执行代码
         mcp::json result = interpreter.forward(args);
         
-        // 格式化输出结果
-        std::string output;
-        if (result.contains("output")) {
-            output += result["output"].get<std::string>();
-        }
-        if (result.contains("error")) {
-            output += result["error"].get<std::string>();
-        }
-        if (result.contains("warning")) {
-            output += result["warning"].get<std::string>();
-        }
-        
-        if (output.empty()) {
-            output = "Executed successfully but w/o output. Maybe you should print more information.";
-        }
-        
         return {{
             {"type", "text"},
-            {"text", output}
+            {"text", result.dump(2)}
         }};
     } catch (const std::exception& e) {
         throw mcp::mcp_exception(mcp::error_code::internal_error, 
@@ -167,12 +272,11 @@ mcp::json python_execute_handler(const mcp::json& args) {
     }
 }
 
-// 注册Python执行工具的函数
+// Register the PythonExecute tool
 void register_python_execute_tool(mcp::server& server) {
-    // 注册PythonExecute工具
-    mcp::tool python_tool = mcp::tool_builder("PythonExecute")
-        .with_description("执行Python代码并返回结果")
-        .with_string_param("code", "要执行的Python代码", true)
+    mcp::tool python_tool = mcp::tool_builder("python_execute")
+        .with_description("Execute Python code and return the result")
+        .with_string_param("code", "The Python code to execute", true)
         .build();
     
     server.register_tool(python_tool, python_execute_handler);
diff --git a/tool/base.h b/tool/base.h
index 34a166f..71dca05 100644
--- a/tool/base.h
+++ b/tool/base.h
@@ -149,8 +149,16 @@ struct ToolResult {
         };
     }
 
+    static std::string parse_json_content(const json& content) {
+        if (content.is_string()) {
+            return content.get<std::string>();
+        } else {
+            return content.dump(2);
+        }
+    }
+
     std::string to_string() const {
-        return !error.empty() ? "Error: " + error.dump() : output.dump();
+        return !error.empty() ? "Error: " + parse_json_content(error) : parse_json_content(output);
     }
 };
 
@@ -161,7 +169,7 @@ struct ToolError : ToolResult {
 
 // Execute the tool with given parameters.
 struct BaseTool {
-    inline static std::set<std::string> special_tool_name = {"terminate"};
+    inline static std::set<std::string> special_tool_name = {"terminate", "planning"};
 
     std::string name;
     std::string description;
diff --git a/tool/filesystem.h b/tool/filesystem.h
index 77ef840..51fa49b 100644
--- a/tool/filesystem.h
+++ b/tool/filesystem.h
@@ -62,6 +62,19 @@ struct FileSystem : BaseTool {
         "required": ["tool"]
     })json");
 
+    inline static std::set<std::string> allowed_tools = {
+        "read_file",
+        "read_multiple_files", 
+        "write_file",
+        "edit_file",
+        "create_directory",
+        "list_directory",
+        "move_file",
+        "search_files",
+        "get_file_info",
+        "list_allowed_directories"
+    };
+
     FileSystem() : BaseTool(name_, description_, parameters_) {}
 
     ToolResult execute(const json& args) override {
@@ -82,6 +95,14 @@ struct FileSystem : BaseTool {
                 return ToolError("Tool is required");
             }
 
+            if (allowed_tools.find(tool) == allowed_tools.end()) {
+                return ToolError("Unknown tool '" + tool + "'. Please use one of the following tools: " + 
+                                 std::accumulate(allowed_tools.begin(), allowed_tools.end(), std::string(),
+                                                 [](const std::string& a, const std::string& b) {
+                                                     return a + (a.empty() ? "" : ", ") + b;
+                                                 }));
+            }
+
             json result = _client->call_tool(tool, args);
 
             bool is_error = result.value("isError", false);
diff --git a/tool/planning.cpp b/tool/planning.cpp
index 661e44d..b063def 100644
--- a/tool/planning.cpp
+++ b/tool/planning.cpp
@@ -254,7 +254,7 @@ ToolResult PlanningTool::_delete_plan(const std::string& plan_id) {
 // Format a plan for display.
 std::string PlanningTool::_format_plan(const json& plan) {
     std::stringstream output_ss;
-    output_ss << "Plan ID: " << plan["plan_id"].get<std::string>() << "\n";
+    output_ss << "Plan: " << plan.value("title", "Unknown Plan") << " (ID: " << plan["plan_id"].get<std::string>() << ")\n";
     int current_length = output_ss.str().length();
 
     for (int i = 0; i < current_length; i++) {
diff --git a/tool/puppeteer.h b/tool/puppeteer.h
index 1038bbf..9cdd26c 100644
--- a/tool/puppeteer.h
+++ b/tool/puppeteer.h
@@ -58,6 +58,16 @@ struct Puppeteer : BaseTool {
         "required": ["tool"]
     })json");
 
+    inline static std::set<std::string> allowed_tools = {
+        "navigate",
+        "screenshot",
+        "click",
+        "hover",
+        "fill",
+        "select",
+        "evaluate"
+    };
+
     Puppeteer() : BaseTool(name_, description_, parameters_) {}
 
     ToolResult execute(const json& args) override {
@@ -78,6 +88,14 @@ struct Puppeteer : BaseTool {
                 return ToolError("Tool is required");
             }
 
+            if (allowed_tools.find(tool) == allowed_tools.end()) {
+                return ToolError("Unknown tool '" + tool + "'. Please use one of the following tools: " + 
+                                 std::accumulate(allowed_tools.begin(), allowed_tools.end(), std::string(),
+                                                 [](const std::string& a, const std::string& b) {
+                                                     return a + (a.empty() ? "" : ", ") + b;
+                                                 }));
+            }
+
             json result = _client->call_tool("puppeteer_" + tool, args);
 
             bool is_error = result.value("isError", false);