diff --git a/src/App.tsx b/src/App.tsx
index 6492a03..44f5233 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -24,6 +24,7 @@ import {
   ContextMenu,
   ContextMenuContent,
   ContextMenuItem,
+  ContextMenuSeparator,
   ContextMenuSub,
   ContextMenuSubContent,
   ContextMenuSubTrigger,
@@ -31,9 +32,8 @@ import {
   ContextMenuGroup
 } from "@/components/ui/context-menu"
 import { Button } from '@/components/ui/button'
-import { Code2, Moon, ScrollText, Sparkles, Sun, Variable } from 'lucide-react'
-// Generate short unique node ids when missing
-const genId = () => `node_${Math.random().toString(36).slice(2, 9)}`
+import { ClipboardPaste, Code2, Moon, ScrollText, Sparkles, Sun, Variable } from 'lucide-react'
+import { DEFAULT_NODE_STYLE, genId, getDefaultDataForType } from './lib/flowUtils'
 
 const SNAP_GRID: [number, number] = [15, 15]
 const snapToGrid = (x: number, y: number): { x: number; y: number } => ({
@@ -41,13 +41,6 @@ const snapToGrid = (x: number, y: number): { x: number; y: number } => ({
   y: Math.round(y / SNAP_GRID[1]) * SNAP_GRID[1],
 })
 
-const DEFAULT_NODE_STYLE: Record<string, { width: number; height: number }> = {
-  config: { width: 320, height: 320 },
-  render: { width: 384, height: 320 },
-  variable: { width: 224, height: 180 },
-  function: { width: 288, height: 260 },
-}
-
 const initialNodes: Node[] = [
   {
     id: 'config-1',
@@ -77,7 +70,7 @@ export default function App() {
 
   const wrapperRef = React.useRef<HTMLDivElement | null>(null)
   const lastClickRef = React.useRef<{ clientX: number; clientY: number } | null>(null)
-  const [contextTarget, setContextTarget] = React.useState<null | { type: 'canvas' | 'node'; nodeId?: string; clientX: number; clientY: number }>(null)
+  const [contextTarget, setContextTarget] = React.useState<null | { type: 'canvas'; clientX: number; clientY: number }>(null)
 
   const nodeTypes = React.useMemo(
     () => ({ config: ConfigNode, render: RenderingNode, variable: VariableNode, function: FunctionNode }),
@@ -95,69 +88,92 @@ export default function App() {
     setRfInstance(instance)
   }, [])
 
+  const onContextMenuCapture = React.useCallback((ev: React.MouseEvent) => {
+    const target = ev.target as HTMLElement
+    const nodeEl = target.closest('.react-flow__node')
+    if (nodeEl) {
+      ev.preventDefault()
+      ev.stopPropagation()
+    }
+  }, [])
+
   const onCanvasContextMenu = React.useCallback((ev: React.MouseEvent) => {
     ev.preventDefault()
-    const target = ev.target as HTMLElement
-    const nodeEl = target.closest('.react-flow__node') as HTMLElement | null
-    const handleEl = target.closest('.react-flow__handle') as HTMLElement | null
     const clientX = ev.clientX
     const clientY = ev.clientY
-
     lastClickRef.current = { clientX, clientY }
-
-    if (nodeEl && !handleEl) {
-      const nodeId = nodeEl.dataset?.id || nodeEl.getAttribute('data-id') || (nodeEl.id && nodeEl.id.startsWith('reactflow__node-') ? nodeEl.id.replace('reactflow__node-', '') : undefined)
-      setContextTarget({ type: 'node', nodeId, clientX, clientY })
-      return
-    }
-
     setContextTarget({ type: 'canvas', clientX, clientY })
   }, [])
 
+  const getMenuPosition = React.useCallback(() => {
+    if (!rfInstance) return null
+    const click = contextTarget ?? lastClickRef.current
+    const clientX = click?.clientX ?? window.innerWidth / 2
+    const clientY = click?.clientY ?? window.innerHeight / 2
+    try {
+      const screenToFlow = rfInstance.screenToFlowPosition ?? rfInstance.project
+      const p = screenToFlow.call(rfInstance, { x: clientX, y: clientY })
+      return snapToGrid(p.x, p.y)
+    } catch {
+      return snapToGrid(clientX, clientY)
+    }
+  }, [rfInstance, contextTarget])
+
   const createNode = React.useCallback(
     (type: string) => {
-      if (!rfInstance) return
-      const click = contextTarget ?? lastClickRef.current
-      const clientX = click?.clientX ?? window.innerWidth / 2
-      const clientY = click?.clientY ?? window.innerHeight / 2
-      let position: { x: number; y: number }
-      try {
-        // Convert screen (client) coordinates to flow coordinates — same position as where the context menu opened
-        const screenToFlow = rfInstance.screenToFlowPosition ?? rfInstance.project
-        position = screenToFlow.call(rfInstance, { x: clientX, y: clientY })
-      } catch {
-        position = { x: clientX, y: clientY }
-      }
-      position = snapToGrid(position.x, position.y)
-
-      const id = genId()
+      const position = getMenuPosition()
+      if (position == null) return
+      const newId = genId()
       const typeMap: Record<string, Node['type']> = {
         config: 'config',
         render: 'render',
         variable: 'variable',
         function: 'function',
       }
-      const dataMap: Record<string, any> = {
-        config: { plantuml: '@startuml\n\n@enduml\n', title: `config-${id}` },
-        render: {},
-        variable: { value: '', valueType: 'string' },
-        function: { body: '// args[0], args[1], ...\nreturn args[0];' },
-      }
       const nodeType = typeMap[type] ?? 'config'
+      const dataMap = getDefaultDataForType(nodeType, newId)
       const newNode: Node = {
-        id,
+        id: newId,
         type: nodeType,
         position: { x: position.x, y: position.y },
-        data: dataMap[type] ?? {},
+        data: dataMap,
         style: DEFAULT_NODE_STYLE[nodeType] ?? DEFAULT_NODE_STYLE.config,
       }
       setNodes((nds) => nds.concat(newNode))
       lastClickRef.current = null
       setContextTarget(null)
     },
-    [rfInstance, setNodes, contextTarget]
+    [getMenuPosition, setNodes]
   )
 
+  const VALID_NODE_TYPES = ['config', 'render', 'variable', 'function'] as const
+
+  const pasteNode = React.useCallback(async () => {
+    const position = getMenuPosition()
+    if (position == null) return
+    try {
+      const text = await navigator.clipboard?.readText()
+      if (!text) return
+      const raw = JSON.parse(text) as { id?: string; type?: string; data?: any; position?: { x: number; y: number }; style?: any }
+      if (!raw || typeof raw.type !== 'string' || !VALID_NODE_TYPES.includes(raw.type as any)) return
+      const newId = genId()
+      const data = raw.data != null && typeof raw.data === 'object' ? { ...raw.data } : {}
+      if (raw.type === 'config' && data.title != null) data.title = `config-${newId}`
+      const newNode: Node = {
+        id: newId,
+        type: raw.type as Node['type'],
+        position: { x: position.x, y: position.y },
+        data,
+        style: DEFAULT_NODE_STYLE[raw.type] ?? DEFAULT_NODE_STYLE.config,
+      }
+      setNodes((nds) => nds.concat(newNode))
+      lastClickRef.current = null
+      setContextTarget(null)
+    } catch {
+      // Invalid clipboard or not a copied node — do nothing
+    }
+  }, [getMenuPosition, setNodes])
+
   const deleteNode = React.useCallback((id: string | undefined) => {
     if (!id) return
     setNodes((nds) => nds.filter((n) => n.id !== id))
@@ -166,7 +182,13 @@ export default function App() {
   }, [setNodes, setEdges])
 
   return (
-    <div className="reactflow-wrapper" ref={wrapperRef} onContextMenu={onCanvasContextMenu} style={{ position: 'relative' }}>
+    <div
+      className="reactflow-wrapper"
+      ref={wrapperRef}
+      onContextMenuCapture={onContextMenuCapture}
+      onContextMenu={onCanvasContextMenu}
+      style={{ position: 'relative' }}
+    >
       <Button
         variant="outline"
         size="icon"
@@ -206,13 +228,8 @@ export default function App() {
           </ContextMenuTrigger>
 
           <ContextMenuContent className="w-48">
-            {contextTarget?.type === 'node' ? (
-              <ContextMenuGroup>
-                <ContextMenuItem onSelect={() => deleteNode(contextTarget.nodeId)}>Delete</ContextMenuItem>
-              </ContextMenuGroup>
-            ) : (
-              <ContextMenuGroup>
-                <ContextMenuSub>
+            <ContextMenuGroup>
+              <ContextMenuSub>
                   <ContextMenuSubTrigger>Create node</ContextMenuSubTrigger>
                   <ContextMenuSubContent className="w-44">
                     <ContextMenuGroup>
@@ -235,8 +252,12 @@ export default function App() {
                     </ContextMenuGroup>
                   </ContextMenuSubContent>
                 </ContextMenuSub>
-              </ContextMenuGroup>
-            )}
+                <ContextMenuSeparator />
+                <ContextMenuItem onSelect={() => pasteNode()}>
+                  <ClipboardPaste className="mr-2 h-4 w-4" />
+                  Paste
+                </ContextMenuItem>
+            </ContextMenuGroup>
           </ContextMenuContent>
         </ContextMenu>
       </FlowContext.Provider>
diff --git a/src/components/graph/BaseNode.tsx b/src/components/graph/BaseNode.tsx
index dc1301b..360887c 100644
--- a/src/components/graph/BaseNode.tsx
+++ b/src/components/graph/BaseNode.tsx
@@ -32,13 +32,13 @@ export function BaseNode({
   // and would be clipped. The inner content wrapper has overflow-hidden for scrolling.
   const appliedStyle = hasSize
     ? {
-        ...style,
-        width: dimensions.width,
-        height: dimensions.height,
-        display: "flex" as const,
-        flexDirection: "column" as const,
-        contain: "layout" as const,
-      }
+      ...style,
+      width: dimensions.width,
+      height: dimensions.height,
+      display: "flex" as const,
+      flexDirection: "column" as const,
+      contain: "layout" as const,
+    }
     : style
       ? { ...style, display: "flex", flexDirection: "column" as const }
       : undefined;
@@ -184,7 +184,7 @@ export function BaseNodeContent({
   return (
     <div
       data-slot="base-node-content"
-      className={cn("min-h-0 flex-1 flex flex-col gap-y-2 overflow-auto pt-1", className)}
+      className={cn("min-h-0 flex-1 flex flex-col overflow-auto pt-1", className)}
       {...props}
     />
   );
diff --git a/src/components/graph/ConfigNode.tsx b/src/components/graph/ConfigNode.tsx
index 09914e6..c0b0f69 100644
--- a/src/components/graph/ConfigNode.tsx
+++ b/src/components/graph/ConfigNode.tsx
@@ -13,18 +13,15 @@ import {
     BaseNodeFooterText,
     BaseNodeHeaderRow,
 } from './BaseNode'
-import { GitBranchPlus, ScrollText } from 'lucide-react'
+import { ScrollText } from 'lucide-react'
 import {
-    Menubar,
-    MenubarContent,
     MenubarItem,
-    MenubarMenu,
     MenubarSub,
     MenubarSubContent,
     MenubarSubTrigger,
-    MenubarTrigger,
 } from '../ui/menubar'
 import { InputHandle, OutputHandle } from './NodeHandles'
+import { NodeMenubar } from './NodeMenubar'
 
 type Props = {
     id: string
@@ -159,14 +156,13 @@ export const ConfigNode = memo(function ConfigNode({ id, data, width, height }:
             <BaseNodeHeaderRow icon={<ScrollText className="size-4" />} title={`${id}.puml`} />
 
             <BaseNodeContent>
-                {hasDependencies && (
-                    <div className="shrink-0 w-full">
-                        <Menubar className="h-auto bg-none p-1 border-none shadow-none">
-                            <MenubarMenu>
-                                <MenubarTrigger className="px-1.5 py-0 text-xs">
-                                    <GitBranchPlus className="size-3.5" />
-                                </MenubarTrigger>
-                                <MenubarContent className="min-w-[12rem]">
+                <div className="shrink-0 w-full">
+                    <NodeMenubar
+                        nodeId={id}
+                        nodeType="config"
+                        editInputsContent={
+                            hasDependencies ? (
+                                <>
                                     {connectedConfigNodes.map((n: any) => (
                                         <MenubarSub key={`config-${n.id}`}>
                                             <MenubarSubTrigger className="text-xs">
@@ -224,11 +220,11 @@ export const ConfigNode = memo(function ConfigNode({ id, data, width, height }:
                                             </MenubarSubContent>
                                         </MenubarSub>
                                     ))}
-                                </MenubarContent>
-                            </MenubarMenu>
-                        </Menubar>
-                    </div>
-                )}
+                                </>
+                            ) : undefined
+                        }
+                    />
+                </div>
 
                 <div ref={editorContainerRef} className="min-h-0 flex-1 w-full nodrag nopan overflow-hidden rounded border border-input">
                     <CodeMirror
diff --git a/src/components/graph/FunctionNode.tsx b/src/components/graph/FunctionNode.tsx
index 31404cf..db0b577 100644
--- a/src/components/graph/FunctionNode.tsx
+++ b/src/components/graph/FunctionNode.tsx
@@ -12,6 +12,7 @@ import {
     BaseNodeHeaderRow,
 } from './BaseNode'
 import { InputHandle, OutputHandle } from './NodeHandles'
+import { NodeMenubar } from './NodeMenubar'
 import { Code2 } from 'lucide-react'
 
 type Props = {
@@ -66,6 +67,9 @@ export const FunctionNode = memo(function FunctionNode({ id, data, width, height
             <BaseNodeHeaderRow icon={<Code2 className="size-4" />} title={id} />
 
             <BaseNodeContent>
+                <div className="shrink-0 w-full mb-1">
+                    <NodeMenubar nodeId={id} nodeType="function" />
+                </div>
                 <p className="shrink-0 text-[10px] text-muted-foreground mb-1">
                     Call in config: <code className="rounded bg-muted px-0.5">$&#123;{id}(var1, var2)&#125;</code>
                 </p>
diff --git a/src/components/graph/NodeMenubar.tsx b/src/components/graph/NodeMenubar.tsx
new file mode 100644
index 0000000..80eb51f
--- /dev/null
+++ b/src/components/graph/NodeMenubar.tsx
@@ -0,0 +1,112 @@
+import React, { useCallback, useContext } from 'react'
+import FlowContext from '../../lib/flowContext'
+import { DEFAULT_NODE_STYLE, genId, getDefaultDataForType } from '../../lib/flowUtils'
+import {
+    Menubar,
+    MenubarContent,
+    MenubarItem,
+    MenubarMenu,
+    MenubarSub,
+    MenubarSubContent,
+    MenubarSubTrigger,
+    MenubarTrigger,
+} from '../ui/menubar'
+
+const DUPLICATE_OFFSET = { x: 30, y: 30 }
+
+type NodeType = 'config' | 'render' | 'variable' | 'function'
+
+type Props = {
+    nodeId: string
+    nodeType: NodeType
+    /** Content for Edit → Inputs (config and function nodes only) */
+    editInputsContent?: React.ReactNode
+}
+
+export function NodeMenubar({ nodeId, nodeType, editInputsContent }: Props) {
+    const ctx = useContext(FlowContext)
+    const nodes = ctx?.nodes ?? []
+    const setNodes = ctx?.setNodes
+    const setEdges = ctx?.setEdges
+
+    const edges = ctx?.edges ?? []
+    const node = nodes.find((n: any) => n.id === nodeId)
+    const hasEdit = nodeType === 'config' || nodeType === 'function'
+    const hasConnectedNodes = edges.some((e: any) => e.target === nodeId)
+
+    const onDuplicate = useCallback(() => {
+        if (!setNodes || !node) return
+        const newId = genId()
+        const pos = node.position ?? { x: 0, y: 0 }
+        const newNode = {
+            id: newId,
+            type: node.type,
+            position: { x: pos.x + DUPLICATE_OFFSET.x, y: pos.y + DUPLICATE_OFFSET.y },
+            data: typeof node.data === 'object' && node.data !== null ? { ...node.data } : node.data,
+            style: DEFAULT_NODE_STYLE[nodeType] ?? DEFAULT_NODE_STYLE.config,
+        }
+        if (newNode.data?.title && nodeType === 'config') newNode.data.title = `config-${newId}`
+        setNodes((nds: any[]) => nds.concat(newNode))
+    }, [node, nodeType, setNodes])
+
+    const onCopy = useCallback(() => {
+        if (!node) return
+        const copy = { id: node.id, type: node.type, data: node.data, position: node.position, style: node.style }
+        navigator.clipboard?.writeText(JSON.stringify(copy)).catch(() => {})
+    }, [node])
+
+    const onReset = useCallback(() => {
+        if (!setNodes) return
+        const defaultData = getDefaultDataForType(nodeType, nodeId)
+        setNodes((nds: any[]) =>
+            nds.map((n) => (n.id === nodeId ? { ...n, data: defaultData } : n))
+        )
+    }, [nodeId, nodeType, setNodes])
+
+    const onDelete = useCallback(() => {
+        if (!setNodes || !setEdges) return
+        setNodes((nds: any[]) => nds.filter((n: any) => n.id !== nodeId))
+        setEdges((eds: any[]) => eds.filter((e: any) => e.source !== nodeId && e.target !== nodeId))
+    }, [nodeId, setNodes, setEdges])
+
+    return (
+        <Menubar className="h-auto min-h-0 flex items-center bg-none p-1 border-none shadow-none">
+            <MenubarMenu>
+                <MenubarTrigger className="px-1.5 py-0 text-xs">
+                    File
+                </MenubarTrigger>
+                <MenubarContent className="min-w-[10rem]">
+                    <MenubarItem className="text-xs" onClick={onDuplicate}>
+                        Duplicate
+                    </MenubarItem>
+                    <MenubarItem className="text-xs" onClick={onCopy}>
+                        Copy
+                    </MenubarItem>
+                    <MenubarItem className="text-xs" onClick={onReset}>
+                        Reset
+                    </MenubarItem>
+                    <MenubarItem className="text-xs text-destructive focus:text-destructive" onClick={onDelete}>
+                        Delete
+                    </MenubarItem>
+                </MenubarContent>
+            </MenubarMenu>
+            {hasEdit && (
+                <MenubarMenu>
+                    <MenubarTrigger className="px-1.5 py-0 text-xs">
+                        Edit
+                    </MenubarTrigger>
+                    <MenubarContent className="min-w-[10rem]">
+                        <MenubarSub>
+                            <MenubarSubTrigger className="text-xs" disabled={!hasConnectedNodes}>
+                                Inputs
+                            </MenubarSubTrigger>
+                            <MenubarSubContent className="min-w-[12rem]">
+                                {editInputsContent}
+                            </MenubarSubContent>
+                        </MenubarSub>
+                    </MenubarContent>
+                </MenubarMenu>
+            )}
+        </Menubar>
+    )
+}
diff --git a/src/components/graph/RenderingNode.tsx b/src/components/graph/RenderingNode.tsx
index 9d4092b..6fe64f8 100644
--- a/src/components/graph/RenderingNode.tsx
+++ b/src/components/graph/RenderingNode.tsx
@@ -10,6 +10,7 @@ import {
     BaseNodeFooterText,
     BaseNodeHeaderRow,
 } from './BaseNode'
+import { NodeMenubar } from './NodeMenubar'
 import { Sparkles } from 'lucide-react'
 import { InputHandle, OutputHandle } from './NodeHandles'
 
@@ -297,6 +298,9 @@ export const RenderingNode = memo(function RenderingNode({ id, width, height }:
             <BaseNodeHeaderRow icon={<Sparkles className="size-4" />} title={id} />
 
             <BaseNodeContent>
+                <div className="shrink-0 w-full">
+                    <NodeMenubar nodeId={id} nodeType="render" />
+                </div>
                 <div className="min-h-0 flex-1 flex flex-col">
                     {incomingIds.length === 0 ? (
                         <Empty className="min-h-0 flex-1">
diff --git a/src/components/graph/VariableNode.tsx b/src/components/graph/VariableNode.tsx
index 63afdce..929471f 100644
--- a/src/components/graph/VariableNode.tsx
+++ b/src/components/graph/VariableNode.tsx
@@ -7,6 +7,7 @@ import {
     BaseNodeFooterText,
     BaseNodeHeaderRow,
 } from './BaseNode'
+import { NodeMenubar } from './NodeMenubar'
 import { Input } from '../ui/input'
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '../ui/select'
 import { Switch } from '../ui/switch'
@@ -93,6 +94,9 @@ export const VariableNode = memo(function VariableNode({ id, data }: Props) {
             <BaseNodeHeaderRow icon={<Variable className="size-4" />} title={id} />
 
             <BaseNodeContent className="gap-2 p-3">
+                <div className="shrink-0 w-full">
+                    <NodeMenubar nodeId={id} nodeType="variable" />
+                </div>
                 <div className="flex flex-col gap-1.5">
                     <label className="text-xs font-medium text-muted-foreground">Type</label>
                     <Select value={valueType} onValueChange={onTypeChange}>
diff --git a/src/components/ui/menubar.tsx b/src/components/ui/menubar.tsx
index 6919168..d5a5bbf 100644
--- a/src/components/ui/menubar.tsx
+++ b/src/components/ui/menubar.tsx
@@ -73,7 +73,7 @@ const MenubarSubTrigger = React.forwardRef<
   <MenubarPrimitive.SubTrigger
     ref={ref}
     className={cn(
-      "flex cursor-default select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none focus:bg-accent focus:text-accent-foreground data-[state=open]:bg-accent data-[state=open]:text-accent-foreground",
+      "flex cursor-default select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none focus:bg-accent focus:text-accent-foreground data-[state=open]:bg-accent data-[state=open]:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
       inset && "pl-8",
       className
     )}
diff --git a/src/lib/flowUtils.ts b/src/lib/flowUtils.ts
new file mode 100644
index 0000000..6c34dd5
--- /dev/null
+++ b/src/lib/flowUtils.ts
@@ -0,0 +1,22 @@
+/** Generate short unique node id */
+export const genId = () => `node_${Math.random().toString(36).slice(2, 9)}`
+
+export const DEFAULT_NODE_STYLE: Record<string, { width: number; height: number }> = {
+  config: { width: 320, height: 320 },
+  render: { width: 384, height: 320 },
+  variable: { width: 224, height: 180 },
+  function: { width: 288, height: 260 },
+}
+
+const DEFAULT_DATA: Record<string, any> = {
+  config: { plantuml: '@startuml\n\n@enduml\n', title: '' },
+  render: {},
+  variable: { value: '', valueType: 'string' },
+  function: { body: '// args[0], args[1], ...\nreturn args[0];' },
+}
+
+export function getDefaultDataForType(type: string, newId?: string): any {
+  const base = { ...DEFAULT_DATA[type] }
+  if (type === 'config' && newId) base.title = `config-${newId}`
+  return base
+}