diff --git a/src/components/searchbox/NodeSearchItem.vue b/src/components/searchbox/NodeSearchItem.vue
index da9a0cd83..a9859eca4 100644
--- a/src/components/searchbox/NodeSearchItem.vue
+++ b/src/components/searchbox/NodeSearchItem.vue
@@ -21,16 +21,17 @@
       </div>
     </div>
     <div class="option-badges">
-      <Tag
-        v-if="nodeDef.experimental"
-        :value="$t('g.experimental')"
-        severity="primary"
-      />
       <Tag
         v-if="nodeDef.deprecated"
         :value="$t('g.deprecated')"
         severity="danger"
       />
+      <Tag
+        v-if="nodeDef.experimental"
+        :value="$t('g.experimental')"
+        severity="primary"
+      />
+      <Tag v-if="nodeDef.dev_only" :value="$t('g.devOnly')" severity="info" />
       <Tag
         v-if="showNodeFrequency && nodeFrequency > 0"
         :value="formatNumberWithSuffix(nodeFrequency, { roundToInt: true })"
diff --git a/src/lib/litegraph/src/LGraphNode.ts b/src/lib/litegraph/src/LGraphNode.ts
index d4d50537c..a9dc95ccb 100644
--- a/src/lib/litegraph/src/LGraphNode.ts
+++ b/src/lib/litegraph/src/LGraphNode.ts
@@ -233,6 +233,14 @@ export class LGraphNode
   static description?: string
   static filter?: string
   static skip_list?: boolean
+  static nodeData?: {
+    dev_only?: boolean
+    deprecated?: boolean
+    experimental?: boolean
+    output_node?: boolean
+    api_node?: boolean
+    name?: string
+  }
 
   static resizeHandleSize = 15
   static resizeEdgeSize = 5
diff --git a/src/locales/en/main.json b/src/locales/en/main.json
index 8fdbe470a..118154211 100644
--- a/src/locales/en/main.json
+++ b/src/locales/en/main.json
@@ -121,6 +121,7 @@
     "customize": "Customize",
     "experimental": "BETA",
     "deprecated": "DEPR",
+    "devOnly": "DEV",
     "loadWorkflow": "Load Workflow",
     "goToNode": "Go to Node",
     "setAsBackground": "Set as Background",
diff --git a/src/schemas/nodeDef/nodeDefSchemaV2.ts b/src/schemas/nodeDef/nodeDefSchemaV2.ts
index 4743164a1..74d3f0f65 100644
--- a/src/schemas/nodeDef/nodeDefSchemaV2.ts
+++ b/src/schemas/nodeDef/nodeDefSchemaV2.ts
@@ -174,6 +174,7 @@ export const zComfyNodeDef = z.object({
   python_module: z.string(),
   deprecated: z.boolean().optional(),
   experimental: z.boolean().optional(),
+  dev_only: z.boolean().optional(),
   api_node: z.boolean().optional()
 })
 
diff --git a/src/schemas/nodeDefSchema.ts b/src/schemas/nodeDefSchema.ts
index 0a03388cd..47810b51c 100644
--- a/src/schemas/nodeDefSchema.ts
+++ b/src/schemas/nodeDefSchema.ts
@@ -257,6 +257,7 @@ export const zComfyNodeDef = z.object({
   python_module: z.string(),
   deprecated: z.boolean().optional(),
   experimental: z.boolean().optional(),
+  dev_only: z.boolean().optional(),
   /**
    * Whether the node is an API node. Running API nodes requires login to
    * Comfy Org account.
diff --git a/src/services/litegraphService.ts b/src/services/litegraphService.ts
index 18d281973..f071a2356 100644
--- a/src/services/litegraphService.ts
+++ b/src/services/litegraphService.ts
@@ -261,7 +261,7 @@ export const useLitegraphService = () => {
       static comfyClass: string
       static override title: string
       static override category: string
-      static nodeData: ComfyNodeDefV1 & ComfyNodeDefV2
+      static override nodeData: ComfyNodeDefV1 & ComfyNodeDefV2
 
       _initialMinSize = { width: 1, height: 1 }
 
@@ -394,7 +394,7 @@ export const useLitegraphService = () => {
       static comfyClass: string
       static override title: string
       static override category: string
-      static nodeData: ComfyNodeDefV1 & ComfyNodeDefV2
+      static override nodeData: ComfyNodeDefV1 & ComfyNodeDefV2
 
       _initialMinSize = { width: 1, height: 1 }
 
@@ -496,6 +496,13 @@ export const useLitegraphService = () => {
     // because `registerNodeType` will overwrite the assignments.
     node.category = nodeDef.category
     node.title = nodeDef.display_name || nodeDef.name
+
+    // Set skip_list for dev-only nodes based on current DevMode setting
+    // This ensures nodes registered after initial load respect the current setting
+    if (nodeDef.dev_only) {
+      const settingStore = useSettingStore()
+      node.skip_list = !settingStore.get('Comfy.DevMode')
+    }
   }
 
   /**
diff --git a/src/stores/nodeDefStore.ts b/src/stores/nodeDefStore.ts
index 217b784ca..7bfa17c2c 100644
--- a/src/stores/nodeDefStore.ts
+++ b/src/stores/nodeDefStore.ts
@@ -1,9 +1,10 @@
 import axios from 'axios'
 import _ from 'es-toolkit/compat'
 import { defineStore } from 'pinia'
-import { computed, ref } from 'vue'
+import { computed, ref, watchEffect } from 'vue'
 
 import { isProxyWidget } from '@/core/graph/subgraph/proxyWidget'
+import { LiteGraph } from '@/lib/litegraph/src/litegraph'
 import type { LGraphNode } from '@/lib/litegraph/src/litegraph'
 import { transformNodeDefV1ToV2 } from '@/schemas/nodeDef/migration'
 import type {
@@ -17,6 +18,7 @@ import type {
   ComfyOutputTypesSpec as ComfyOutputSpecV1,
   PriceBadge
 } from '@/schemas/nodeDefSchema'
+import { useSettingStore } from '@/platform/settings/settingStore'
 import { NodeSearchService } from '@/services/nodeSearchService'
 import { useSubgraphStore } from '@/stores/subgraphStore'
 import { NodeSourceType, getNodeSource } from '@/types/nodeSource'
@@ -41,6 +43,7 @@ export class ComfyNodeDefImpl
   readonly help: string
   readonly deprecated: boolean
   readonly experimental: boolean
+  readonly dev_only: boolean
   readonly output_node: boolean
   readonly api_node: boolean
   /**
@@ -133,6 +136,7 @@ export class ComfyNodeDefImpl
     this.deprecated = obj.deprecated ?? obj.category === ''
     this.experimental =
       obj.experimental ?? obj.category.startsWith('_for_testing')
+    this.dev_only = obj.dev_only ?? false
     this.output_node = obj.output_node
     this.api_node = !!obj.api_node
     this.input = obj.input ?? {}
@@ -174,6 +178,7 @@ export class ComfyNodeDefImpl
   get nodeLifeCycleBadgeText(): string {
     if (this.deprecated) return '[DEPR]'
     if (this.experimental) return '[BETA]'
+    if (this.dev_only) return '[DEV]'
     return ''
   }
 }
@@ -299,12 +304,27 @@ export interface NodeDefFilter {
 }
 
 export const useNodeDefStore = defineStore('nodeDef', () => {
+  const settingStore = useSettingStore()
+
   const nodeDefsByName = ref<Record<string, ComfyNodeDefImpl>>({})
   const nodeDefsByDisplayName = ref<Record<string, ComfyNodeDefImpl>>({})
   const showDeprecated = ref(false)
   const showExperimental = ref(false)
+  const showDevOnly = computed(() => settingStore.get('Comfy.DevMode'))
   const nodeDefFilters = ref<NodeDefFilter[]>([])
 
+  // Update skip_list on all registered node types when dev mode changes
+  // This ensures LiteGraph's getNodeTypesCategories/getNodeTypesInCategory
+  // correctly filter dev-only nodes from the right-click context menu
+  watchEffect(() => {
+    const devModeEnabled = showDevOnly.value
+    for (const nodeType of Object.values(LiteGraph.registered_node_types)) {
+      if (nodeType.nodeData?.dev_only) {
+        nodeType.skip_list = !devModeEnabled
+      }
+    }
+  })
+
   const nodeDefs = computed(() => {
     const subgraphStore = useSubgraphStore()
     // Blueprints first for discoverability in the node library sidebar
@@ -422,6 +442,14 @@ export const useNodeDefStore = defineStore('nodeDef', () => {
       predicate: (nodeDef) => showExperimental.value || !nodeDef.experimental
     })
 
+    // Dev-only nodes filter
+    registerNodeDefFilter({
+      id: 'core.dev_only',
+      name: 'Hide Dev-Only Nodes',
+      description: 'Hides nodes marked as dev-only unless dev mode is enabled',
+      predicate: (nodeDef) => showDevOnly.value || !nodeDef.dev_only
+    })
+
     // Subgraph nodes filter
     // Filter out litegraph typed subgraphs, saved blueprints are added in separately
     registerNodeDefFilter({
@@ -446,6 +474,7 @@ export const useNodeDefStore = defineStore('nodeDef', () => {
     nodeDefsByDisplayName,
     showDeprecated,
     showExperimental,
+    showDevOnly,
     nodeDefFilters,
 
     nodeDefs,
diff --git a/src/utils/nodeFilterUtil.test.ts b/src/utils/nodeFilterUtil.test.ts
index 871f66109..0e6149c0d 100644
--- a/src/utils/nodeFilterUtil.test.ts
+++ b/src/utils/nodeFilterUtil.test.ts
@@ -11,7 +11,7 @@ describe('nodeFilterUtil', () => {
   ): LGraphNode => {
     // Create a custom class with the nodeData static property
     class MockNode extends LGraphNode {
-      static nodeData = isOutputNode ? { output_node: true } : {}
+      static override nodeData = isOutputNode ? { output_node: true } : {}
     }
 
     const node = new MockNode('')
@@ -71,11 +71,11 @@ describe('nodeFilterUtil', () => {
     })
 
     it('should handle nodes with undefined output_node', () => {
-      class MockNodeWithOtherData extends LGraphNode {
-        static nodeData = { someOtherProperty: true }
+      class MockNodeWithEmptyData extends LGraphNode {
+        static override nodeData = {}
       }
 
-      const node = new MockNodeWithOtherData('')
+      const node = new MockNodeWithEmptyData('')
       node.id = 1
 
       const result = filterOutputNodes([node])