diff --git a/src/api/agents.ts b/src/api/agents.ts
index 90cfbcb..fdc29bf 100644
--- a/src/api/agents.ts
+++ b/src/api/agents.ts
@@ -57,6 +57,7 @@ export interface ExternalToolPlugin extends ExternalToolPluginPayload {
   id: string;
   enabled: number;
   createdAt: number;
+  isTemp?: boolean;
 }
 
 export interface Agent {
diff --git a/src/components/ExternalToolEditor.tsx b/src/components/ExternalToolEditor.tsx
index 851ddd6..b6069fc 100644
--- a/src/components/ExternalToolEditor.tsx
+++ b/src/components/ExternalToolEditor.tsx
@@ -107,7 +107,7 @@ export default function ExternalToolEditor({ open, agentId, plugin, onClose, onS
         })),
       };
 
-      if (plugin) {
+      if (plugin && !plugin.id.startsWith('temp_')) {
         await AgentAPI.updatePlugin(agentId, plugin.id, payload);
         message.success('外部工具更新成功');
       } else {
diff --git a/src/pages/AgentEditor/components/capability/KnowledgeSettingsPanel.tsx b/src/pages/AgentEditor/components/capability/KnowledgeSettingsPanel.tsx
index 8f7823e..5356001 100644
--- a/src/pages/AgentEditor/components/capability/KnowledgeSettingsPanel.tsx
+++ b/src/pages/AgentEditor/components/capability/KnowledgeSettingsPanel.tsx
@@ -213,13 +213,13 @@ export default function KnowledgeSettingsPanel({
                         <Space size={6} wrap className="agent-editor-plugin-meta">
                           <Tag>{plugin.authType || 'none'}</Tag>
                           <span>{plugin.baseUrl}</span>
-                          <span>{plugin.apis.length} 个 API</span>
+                          <span>{plugin.apis?.length ?? 0} 个 API</span>
                         </Space>
                         <Collapse
                           ghost
                           size="small"
                           className="agent-editor-plugin-apis"
-                          items={plugin.apis.map((api) => ({
+                          items={plugin.apis?.map((api) => ({
                             key: api.id || api.name,
                             label: (
                               <Space wrap>
@@ -243,7 +243,7 @@ export default function KnowledgeSettingsPanel({
                                 </div>
                               </div>
                             ),
-                          }))}
+                          })) || []}
                         />
                       </Card>
                     ))}
diff --git a/src/pages/AgentEditor/hooks/useAgentEditor.ts b/src/pages/AgentEditor/hooks/useAgentEditor.ts
index b10c3db..3b82dd1 100644
--- a/src/pages/AgentEditor/hooks/useAgentEditor.ts
+++ b/src/pages/AgentEditor/hooks/useAgentEditor.ts
@@ -245,41 +245,32 @@ export function useAgentEditor({ id, isNew, form, message, navigate }: UseAgentE
     }
   };
 
-  const handleCopyPlugin = async (pluginId: string) => {
+  const handleCopyPlugin = (pluginId: string) => {
     if (!id || !agent) return;
     const plugin = agent.plugins?.find((p) => p.id === pluginId);
     if (!plugin) return;
 
-    try {
-      const copyPayload = {
-        name: `${plugin.name}-copy`,
-        description: plugin.description,
-        baseUrl: plugin.baseUrl,
-        authType: plugin.authType,
-        authConfig: plugin.authConfig,
-        apis: plugin.apis.map((api) => ({
-          name: `${api.name}-copy`,
-          description: api.description,
-          method: api.method,
-          path: api.path,
-          headers: api.headers,
-          parametersSchema: api.parametersSchema,
-        })),
+    const newPlugin = {
+      ...plugin,
+      id: `temp_${Date.now()}`,
+      name: `${plugin.name}-copy`,
+      apis: plugin.apis?.map((api) => ({
+        ...api,
+        name: `${api.name}-copy`,
+        id: undefined,
+      })) || [],
+      isTemp: true,
+    };
+
+    setAgent((prev) => {
+      if (!prev) return prev;
+      return {
+        ...prev,
+        plugins: [...(prev.plugins || []), newPlugin],
       };
-      const newPlugin = await AgentAPI.bindPlugin(id, copyPayload as any);
-      setAgent((prev) => {
-        if (!prev) return prev;
-        return {
-          ...prev,
-          plugins: [...(prev.plugins || []), newPlugin],
-        };
-      });
-      message.success('外部工具复制成功');
-      return newPlugin;
-    } catch (e: any) {
-      message.error('外部工具复制失败：' + (e?.message ?? e));
-      throw e;
-    }
+    });
+
+    return newPlugin;
   };
 
   const beforeUploadKnowledge = async (file: any) => {
diff --git a/src/pages/AgentEditor/index.tsx b/src/pages/AgentEditor/index.tsx
index 87a714a..a2a5475 100644
--- a/src/pages/AgentEditor/index.tsx
+++ b/src/pages/AgentEditor/index.tsx
@@ -104,15 +104,11 @@ export default function AgentEditor() {
               setEditingPluginId(null);
               setExternalToolEditorOpen(true);
             }}
-            onCopyExternalTool={async (pluginId) => {
-              try {
-                const newPlugin = await handleCopyPlugin(pluginId);
-                if (newPlugin) {
-                  setEditingPluginId(newPlugin.id);
-                  setExternalToolEditorOpen(true);
-                }
-              } catch (e) {
-                // error handled in hook
+            onCopyExternalTool={(pluginId) => {
+              const newPlugin = handleCopyPlugin(pluginId);
+              if (newPlugin) {
+                setEditingPluginId(newPlugin.id);
+                setExternalToolEditorOpen(true);
               }
             }}
             onEditExternalTool={(pluginId) => {