diff --git a/include/AsstCaller.h b/include/AsstCaller.h
index 4223555bd3..aaae22e68d 100644
--- a/include/AsstCaller.h
+++ b/include/AsstCaller.h
@@ -1,59 +1,49 @@
 #pragma once
 
 #include "AsstPort.h"
+#include <stdint.h>
 
-#ifndef __cplusplus
-#include <stdbool.h>
-#endif
+struct AsstExtAPI;
+typedef struct AsstExtAPI* AsstHandle;
 
-#ifdef __cplusplus
-namespace asst
-{
-    class AsstExtAPI;
-}
-#endif
+typedef uint8_t AsstBool;
+typedef uint64_t AsstSize;
+typedef int32_t AsstMsgId;
+typedef int32_t AsstTaskId;
+typedef int32_t AsstAsyncCallId;
+typedef int32_t AsstStaticOptionKey;
+typedef int32_t AsstInstanceOptionKey;
+
+typedef void(ASST_CALL* AsstApiCallback)(AsstMsgId msg, const char* details_json, void* custom_arg);
 
 #ifdef __cplusplus
 extern "C"
 {
 #endif
-#ifdef __cplusplus
-    typedef asst::AsstExtAPI* AsstHandle;
-#else
-typedef void* AsstHandle;
-#endif
-    typedef int AsstTaskId;
-    typedef int AsstStaticOptionKey;
-    typedef int AsstInstanceOptionKey;
-    typedef unsigned long long AsstSize;
-    typedef int AsstAsyncCallId;
-
-    typedef void(ASST_CALL* AsstApiCallback)(int msg, const char* detail_json, void* custom_arg);
-
-    bool ASSTAPI AsstSetUserDir(const char* path);
-    bool ASSTAPI AsstLoadResource(const char* path);
-    bool ASSTAPI AsstSetStaticOption(AsstStaticOptionKey key, const char* value);
+    AsstBool ASSTAPI AsstSetUserDir(const char* path);
+    AsstBool ASSTAPI AsstLoadResource(const char* path);
+    AsstBool ASSTAPI AsstSetStaticOption(AsstStaticOptionKey key, const char* value);
 
     AsstHandle ASSTAPI AsstCreate();
     AsstHandle ASSTAPI AsstCreateEx(AsstApiCallback callback, void* custom_arg);
     void ASSTAPI AsstDestroy(AsstHandle handle);
 
-    bool ASSTAPI AsstSetInstanceOption(AsstHandle handle, AsstInstanceOptionKey key, const char* value);
-    /* deprecated */ bool ASSTAPI AsstConnect(AsstHandle handle, const char* adb_path, const char* address,
-                                              const char* config);
+    AsstBool ASSTAPI AsstSetInstanceOption(AsstHandle handle, AsstInstanceOptionKey key, const char* value);
+    /* deprecated */ AsstBool ASSTAPI AsstConnect(AsstHandle handle, const char* adb_path, const char* address,
+                                                  const char* config);
 
     AsstTaskId ASSTAPI AsstAppendTask(AsstHandle handle, const char* type, const char* params);
-    bool ASSTAPI AsstSetTaskParams(AsstHandle handle, AsstTaskId id, const char* params);
+    AsstBool ASSTAPI AsstSetTaskParams(AsstHandle handle, AsstTaskId id, const char* params);
 
-    bool ASSTAPI AsstStart(AsstHandle handle);
-    bool ASSTAPI AsstStop(AsstHandle handle);
-    bool ASSTAPI AsstRunning(AsstHandle handle);
+    AsstBool ASSTAPI AsstStart(AsstHandle handle);
+    AsstBool ASSTAPI AsstStop(AsstHandle handle);
+    AsstBool ASSTAPI AsstRunning(AsstHandle handle);
 
     /* Aysnc with AsstMsg::AsyncCallInfo Callback*/
     AsstAsyncCallId ASSTAPI AsstAsyncConnect(AsstHandle handle, const char* adb_path, const char* address,
-                                             const char* config, bool block);
-    AsstAsyncCallId ASSTAPI AsstAsyncClick(AsstHandle handle, int x, int y, bool block);
-    AsstAsyncCallId ASSTAPI AsstAsyncScreencap(AsstHandle handle, bool block);
+                                             const char* config, AsstBool block);
+    AsstAsyncCallId ASSTAPI AsstAsyncClick(AsstHandle handle, int32_t x, int32_t y, AsstBool block);
+    AsstAsyncCallId ASSTAPI AsstAsyncScreencap(AsstHandle handle, AsstBool block);
 
     AsstSize ASSTAPI AsstGetImage(AsstHandle handle, void* buff, AsstSize buff_size);
     AsstSize ASSTAPI AsstGetUUID(AsstHandle handle, char* buff, AsstSize buff_size);
diff --git a/src/MaaCore/Assistant.cpp b/src/MaaCore/Assistant.cpp
index 0e6d355841..7e0f3755ac 100644
--- a/src/MaaCore/Assistant.cpp
+++ b/src/MaaCore/Assistant.cpp
@@ -25,7 +25,7 @@
 
 using namespace asst;
 
-bool AsstExtAPI::set_static_option(StaticOptionKey key, const std::string& value)
+bool ::AsstExtAPI::set_static_option(StaticOptionKey key, const std::string& value)
 {
     Log.info(__FUNCTION__, "| key", static_cast<int>(key), "value", value);
     switch (key) {
@@ -49,7 +49,7 @@ bool AsstExtAPI::set_static_option(StaticOptionKey key, const std::string& value
     return false;
 }
 
-Assistant::Assistant(AsstApiCallback callback, void* callback_arg) : m_callback(callback), m_callback_arg(callback_arg)
+Assistant::Assistant(ApiCallback callback, void* callback_arg) : m_callback(callback), m_callback_arg(callback_arg)
 {
     LogTraceFunction;
 
@@ -396,7 +396,7 @@ void Assistant::msg_proc()
             lock.unlock();
 
             if (m_callback) {
-                m_callback(static_cast<int>(msg), detail.to_string().c_str(), m_callback_arg);
+                m_callback(static_cast<AsstMsgId>(msg), detail.to_string().c_str(), m_callback_arg);
             }
         }
         else {
diff --git a/src/MaaCore/Assistant.h b/src/MaaCore/Assistant.h
index 65d0d37064..b7b12b4baa 100644
--- a/src/MaaCore/Assistant.h
+++ b/src/MaaCore/Assistant.h
@@ -11,53 +11,51 @@
 #include "Common/AsstMsg.h"
 #include "Common/AsstTypes.h"
 
+struct AsstExtAPI
+{
+public:
+    using TaskId = int;
+    using AsyncCallId = int;
+
+    virtual ~AsstExtAPI() = default;
+
+    // 设置进程级参数
+    static bool set_static_option(asst::StaticOptionKey key, const std::string& value);
+    // 设置实例级参数
+    virtual bool set_instance_option(asst::InstanceOptionKey key, const std::string& value) = 0;
+    // 连接adb
+    virtual bool connect(const std::string& adb_path, const std::string& address, const std::string& config) = 0;
+
+    // 添加任务
+    virtual TaskId append_task(const std::string& type, const std::string& params) = 0;
+    // 动态设置任务参数
+    virtual bool set_task_params(TaskId task_id, const std::string& params) = 0;
+
+    // 开始执行任务队列
+    virtual bool start(bool block = true) = 0;
+    // 停止任务队列并清空
+    virtual bool stop(bool block = true) = 0;
+    // 是否正在运行
+    virtual bool running() const = 0;
+
+    // 异步连接
+    virtual AsyncCallId async_connect(const std::string& adb_path, const std::string& address,
+                                      const std::string& config, bool block = false) = 0;
+    // 异步点击
+    virtual AsyncCallId async_click(int x, int y, bool block = false) = 0;
+    // 异步截图
+    virtual AsyncCallId async_screencap(bool block = false) = 0;
+
+    // 获取上次的截图
+    virtual std::vector<unsigned char> get_image() const = 0;
+    // 获取 UUID
+    virtual std::string get_uuid() const = 0;
+    // 获取任务列表
+    virtual std::vector<TaskId> get_tasks_list() const = 0;
+};
+
 namespace asst
 {
-    using uchar = unsigned char;
-
-    class AsstExtAPI
-    {
-    public:
-        using TaskId = int;
-        using AsyncCallId = int;
-
-        virtual ~AsstExtAPI() = default;
-
-        // 设置进程级参数
-        static bool set_static_option(StaticOptionKey key, const std::string& value);
-        // 设置实例级参数
-        virtual bool set_instance_option(InstanceOptionKey key, const std::string& value) = 0;
-        // 连接adb
-        virtual bool connect(const std::string& adb_path, const std::string& address, const std::string& config) = 0;
-
-        // 添加任务
-        virtual TaskId append_task(const std::string& type, const std::string& params) = 0;
-        // 动态设置任务参数
-        virtual bool set_task_params(TaskId task_id, const std::string& params) = 0;
-
-        // 开始执行任务队列
-        virtual bool start(bool block = true) = 0;
-        // 停止任务队列并清空
-        virtual bool stop(bool block = true) = 0;
-        // 是否正在运行
-        virtual bool running() const = 0;
-
-        // 异步连接
-        virtual AsyncCallId async_connect(const std::string& adb_path, const std::string& address,
-                                          const std::string& config, bool block = false) = 0;
-        // 异步点击
-        virtual AsyncCallId async_click(int x, int y, bool block = false) = 0;
-        // 异步截图
-        virtual AsyncCallId async_screencap(bool block = false) = 0;
-
-        // 获取上次的截图
-        virtual std::vector<uchar> get_image() const = 0;
-        // 获取 UUID
-        virtual std::string get_uuid() const = 0;
-        // 获取任务列表
-        virtual std::vector<TaskId> get_tasks_list() const = 0;
-    };
-
     class Controller;
     class InterfaceTask;
     class Status;
@@ -65,7 +63,7 @@ namespace asst
     class Assistant : public AsstExtAPI
     {
     public:
-        Assistant(AsstApiCallback callback = nullptr, void* callback_arg = nullptr);
+        Assistant(ApiCallback callback = nullptr, void* callback_arg = nullptr);
         virtual ~Assistant() override;
 
         virtual bool set_instance_option(InstanceOptionKey key, const std::string& value) override;
@@ -84,7 +82,7 @@ namespace asst
         virtual AsyncCallId async_click(int x, int y, bool block = false) override;
         virtual AsyncCallId async_screencap(bool block = false) override;
 
-        virtual std::vector<uchar> get_image() const override;
+        virtual std::vector<unsigned char> get_image() const override;
         virtual std::string get_uuid() const override;
         virtual std::vector<TaskId> get_tasks_list() const override;
 
@@ -111,7 +109,7 @@ namespace asst
         bool m_thread_exit = false;
         std::list<std::pair<TaskId, std::shared_ptr<InterfaceTask>>> m_tasks_list;
         inline static TaskId m_task_id = 0; // 进程级唯一
-        AsstApiCallback m_callback = nullptr;
+        ApiCallback m_callback = nullptr;
         void* m_callback_arg = nullptr;
 
         bool m_thread_idle = true;
diff --git a/src/MaaCore/AsstCaller.cpp b/src/MaaCore/AsstCaller.cpp
index 49542212fc..9e8ca51d0a 100644
--- a/src/MaaCore/AsstCaller.cpp
+++ b/src/MaaCore/AsstCaller.cpp
@@ -39,14 +39,17 @@ BOOL APIENTRY DllMain(HINSTANCE hModule,
 #endif
 #endif
 
-static bool inited = false;
+bool inited()
+{
+    return asst::ResourceLoader::get_instance().loaded();
+}
 
-bool AsstSetUserDir(const char* path)
+AsstBool AsstSetUserDir(const char* path)
 {
     return asst::UserDir.set(path);
 }
 
-bool AsstLoadResource(const char* path)
+AsstBool AsstLoadResource(const char* path)
 {
     using namespace asst::utils::path_literals;
 
@@ -58,21 +61,20 @@ bool AsstLoadResource(const char* path)
     if (asst::UserDir.empty()) {
         asst::UserDir.set(os_path);
     }
-    inited = asst::ResourceLoader::get_instance().load(res_path);
-    return inited;
+    return asst::ResourceLoader::get_instance().load(res_path);
 }
 
-bool AsstSetStaticOption(AsstStaticOptionKey key, const char* value)
+AsstBool AsstSetStaticOption(AsstStaticOptionKey key, const char* value)
 {
-    if (inited) {
+    if (!inited()) {
         return false;
     }
-    return asst::AsstExtAPI::set_static_option(static_cast<asst::StaticOptionKey>(key), value);
+    return AsstExtAPI::set_static_option(static_cast<asst::StaticOptionKey>(key), value);
 }
 
 AsstHandle AsstCreate()
 {
-    if (!inited) {
+    if (!inited()) {
         return nullptr;
     }
     return new asst::Assistant();
@@ -80,10 +82,10 @@ AsstHandle AsstCreate()
 
 AsstHandle AsstCreateEx(AsstApiCallback callback, void* custom_arg)
 {
-    if (!inited) {
+    if (!inited()) {
         return nullptr;
     }
-    return new asst::Assistant(callback, custom_arg);
+    return new asst::Assistant(static_cast<asst::ApiCallback>(callback), custom_arg);
 }
 
 void AsstDestroy(AsstHandle handle)
@@ -96,7 +98,7 @@ void AsstDestroy(AsstHandle handle)
     handle = nullptr;
 }
 
-bool AsstSetInstanceOption(AsstHandle handle, AsstInstanceOptionKey key, const char* value)
+AsstBool AsstSetInstanceOption(AsstHandle handle, AsstInstanceOptionKey key, const char* value)
 {
     if (handle == nullptr) {
         return false;
@@ -105,36 +107,36 @@ bool AsstSetInstanceOption(AsstHandle handle, AsstInstanceOptionKey key, const c
     return handle->set_instance_option(static_cast<asst::InstanceOptionKey>(key), value);
 }
 
-bool AsstConnect(AsstHandle handle, const char* adb_path, const char* address, const char* config)
+AsstBool AsstConnect(AsstHandle handle, const char* adb_path, const char* address, const char* config)
 {
-    if (!inited || handle == nullptr) {
+    if (!inited() || handle == nullptr) {
         return false;
     }
 
     return handle->connect(adb_path, address, config ? config : std::string());
 }
 
-bool AsstStart(AsstHandle handle)
+AsstBool AsstStart(AsstHandle handle)
 {
-    if (!inited || handle == nullptr) {
+    if (!inited() || handle == nullptr) {
         return false;
     }
 
     return handle->start();
 }
 
-bool AsstStop(AsstHandle handle)
+AsstBool AsstStop(AsstHandle handle)
 {
-    if (!inited || handle == nullptr) {
+    if (!inited() || handle == nullptr) {
         return false;
     }
 
     return handle->stop();
 }
 
-bool AsstRunning(AsstHandle handle)
+AsstBool AsstRunning(AsstHandle handle)
 {
-    if (!inited || handle == nullptr) {
+    if (!inited() || handle == nullptr) {
         return false;
     }
 
@@ -142,9 +144,9 @@ bool AsstRunning(AsstHandle handle)
 }
 
 AsstAsyncCallId AsstAsyncConnect(AsstHandle handle, const char* adb_path, const char* address, const char* config,
-                                 bool block)
+                                 AsstBool block)
 {
-    if (!inited || handle == nullptr) {
+    if (!inited() || handle == nullptr) {
         return false;
     }
     return handle->async_connect(adb_path, address, config ? config : std::string(), block);
@@ -152,33 +154,33 @@ AsstAsyncCallId AsstAsyncConnect(AsstHandle handle, const char* adb_path, const
 
 AsstTaskId AsstAppendTask(AsstHandle handle, const char* type, const char* params)
 {
-    if (!inited || handle == nullptr) {
+    if (!inited() || handle == nullptr) {
         return 0;
     }
 
     return handle->append_task(type, params ? params : "");
 }
 
-bool AsstSetTaskParams(AsstHandle handle, AsstTaskId id, const char* params)
+AsstBool AsstSetTaskParams(AsstHandle handle, AsstTaskId id, const char* params)
 {
-    if (!inited || handle == nullptr) {
+    if (!inited() || handle == nullptr) {
         return false;
     }
 
     return handle->set_task_params(id, params ? params : "");
 }
 
-AsstAsyncCallId AsstAsyncClick(AsstHandle handle, int x, int y, bool block)
+AsstAsyncCallId AsstAsyncClick(AsstHandle handle, int32_t x, int32_t y, AsstBool block)
 {
-    if (!inited || handle == nullptr) {
+    if (!inited() || handle == nullptr) {
         return false;
     }
     return handle->async_click(x, y, block);
 }
 
-AsstAsyncCallId AsstAsyncScreencap(AsstHandle handle, bool block)
+AsstAsyncCallId AsstAsyncScreencap(AsstHandle handle, AsstBool block)
 {
-    if (!inited || handle == nullptr) {
+    if (!inited() || handle == nullptr) {
         return false;
     }
     return handle->async_screencap(block);
@@ -186,7 +188,7 @@ AsstAsyncCallId AsstAsyncScreencap(AsstHandle handle, bool block)
 
 AsstSize AsstGetImage(AsstHandle handle, void* buff, AsstSize buff_size)
 {
-    if (!inited || handle == nullptr || buff == nullptr) {
+    if (!inited() || handle == nullptr || buff == nullptr) {
         return NullSize;
     }
     auto img_data = handle->get_image();
@@ -200,7 +202,7 @@ AsstSize AsstGetImage(AsstHandle handle, void* buff, AsstSize buff_size)
 
 AsstSize AsstGetUUID(AsstHandle handle, char* buff, AsstSize buff_size)
 {
-    if (!inited || handle == nullptr || buff == nullptr) {
+    if (!inited() || handle == nullptr || buff == nullptr) {
         return NullSize;
     }
     auto uuid = handle->get_uuid();
@@ -214,7 +216,7 @@ AsstSize AsstGetUUID(AsstHandle handle, char* buff, AsstSize buff_size)
 
 AsstSize AsstGetTasksList(AsstHandle handle, AsstTaskId* buff, AsstSize buff_size)
 {
-    if (!inited || handle == nullptr || buff == nullptr) {
+    if (!inited() || handle == nullptr || buff == nullptr) {
         return NullSize;
     }
     auto tasks = handle->get_tasks_list();
@@ -238,8 +240,8 @@ const char* AsstGetVersion()
 
 void AsstLog(const char* level, const char* message)
 {
-    if (!inited) {
-        std::cerr << "Not inited" << std::endl;
+    if (asst::UserDir.empty()) {
+        std::cerr << __FUNCTION__ << " | User Dir not set" << std::endl;
         return;
     }
     asst::Log.log(asst::Logger::level(level), message);
diff --git a/src/MaaCore/Common/AsstMsg.h b/src/MaaCore/Common/AsstMsg.h
index 31a328d855..e4357e68f3 100644
--- a/src/MaaCore/Common/AsstMsg.h
+++ b/src/MaaCore/Common/AsstMsg.h
@@ -54,14 +54,11 @@ namespace asst
         return os << _type_name.at(type);
     }
 
-    // AsstCallback 消息回调函数
-    // 参数：
-    // AsstMsg 消息类型
-    // const json::value& 消息详情json，每种消息不同，Todo，需要补充个协议文档啥的
-    // void* 外部调用者自定义参数，每次回调会带出去，建议传个(void*)this指针进来
-    using AsstApiCallback = void (*)(int msg, const char* detail_json, void* custom_arg);
+    // 对外的回调接口
+    using AsstMsgId = int32_t;
+    using ApiCallback = void (*)(AsstMsgId msg, const char* details_json, void* custom_arg);
 
     // 内部使用的回调
     class Assistant;
-    using AsstCallback = std::function<void(AsstMsg, const json::value&, Assistant*)>;
+    using AsstCallback = std::function<void(AsstMsg msg, const json::value& details, Assistant* inst)>;
 }
diff --git a/src/MaaCore/Config/ResourceLoader.cpp b/src/MaaCore/Config/ResourceLoader.cpp
index 7af9e5e6a0..f1e1e4c7ea 100644
--- a/src/MaaCore/Config/ResourceLoader.cpp
+++ b/src/MaaCore/Config/ResourceLoader.cpp
@@ -26,6 +26,7 @@ bool asst::ResourceLoader::load(const std::filesystem::path& path)
         auto full_path = path / Filename;                                 \
         bool ret = load_resource<Config>(full_path);                      \
         if (!ret) {                                                       \
+            m_loaded = false;                                             \
             Log.error(#Config, " load failed, path:", full_path);         \
             return false;                                                 \
         }                                                                 \
@@ -38,6 +39,7 @@ bool asst::ResourceLoader::load(const std::filesystem::path& path)
         auto full_templ_dir = path / TemplDir;                                                   \
         bool ret = load_resource_with_templ<Config>(full_path, full_templ_dir);                  \
         if (!ret) {                                                                              \
+            m_loaded = false;                                                                    \
             Log.error(#Config, "load failed, path:", full_path, ", templ dir:", full_templ_dir); \
             return false;                                                                        \
         }                                                                                        \
@@ -72,3 +74,8 @@ bool asst::ResourceLoader::load(const std::filesystem::path& path)
 
     return true;
 }
+
+bool asst::ResourceLoader::loaded() const noexcept
+{
+    return m_loaded;
+}
diff --git a/src/MaaCore/Config/ResourceLoader.h b/src/MaaCore/Config/ResourceLoader.h
index 06e55c6bec..e1b4671027 100644
--- a/src/MaaCore/Config/ResourceLoader.h
+++ b/src/MaaCore/Config/ResourceLoader.h
@@ -16,6 +16,7 @@ namespace asst
         virtual ~ResourceLoader() override = default;
 
         virtual bool load(const std::filesystem::path& path) override;
+        bool loaded() const noexcept;
 
     private:
         template <Singleton T>
diff --git a/src/MaaCore/MaaCore.vcxproj b/src/MaaCore/MaaCore.vcxproj
index 8f9bf38e43..a4866360c2 100644
--- a/src/MaaCore/MaaCore.vcxproj
+++ b/src/MaaCore/MaaCore.vcxproj
@@ -386,4 +386,4 @@
       <UserProperties _1_1_4_1_1_4resource_4config_1json__JsonSchema="" _1_1_4_1_1_4resource_4tasks_1json__JsonSchema="../docs/maa_tasks_schema.json" />
     </VisualStudio>
   </ProjectExtensions>
-</Project>
+</Project>
\ No newline at end of file