diff --git a/comfy/comfy_types/node_typing.py b/comfy/comfy_types/node_typing.py
index 071b98332..0194b7d70 100644
--- a/comfy/comfy_types/node_typing.py
+++ b/comfy/comfy_types/node_typing.py
@@ -236,6 +236,8 @@ class ComfyNodeABC(ABC):
     """Flags a node as experimental, informing users that it may change or not work as expected."""
     DEPRECATED: bool
     """Flags a node as deprecated, indicating to users that they should find alternatives to this node."""
+    DEV_ONLY: bool
+    """Flags a node as dev-only, hiding it from search/menus unless dev mode is enabled."""
     API_NODE: Optional[bool]
     """Flags a node as an API node. See: https://docs.comfy.org/tutorials/api-nodes/overview."""
 
diff --git a/comfy_api/latest/_io.py b/comfy_api/latest/_io.py
index 03c77a531..be759952e 100644
--- a/comfy_api/latest/_io.py
+++ b/comfy_api/latest/_io.py
@@ -1247,6 +1247,7 @@ class NodeInfoV1:
     output_node: bool=None
     deprecated: bool=None
     experimental: bool=None
+    dev_only: bool=None
     api_node: bool=None
     price_badge: dict | None = None
     search_aliases: list[str]=None
@@ -1264,6 +1265,7 @@ class NodeInfoV3:
     output_node: bool=None
     deprecated: bool=None
     experimental: bool=None
+    dev_only: bool=None
     api_node: bool=None
     price_badge: dict | None = None
 
@@ -1375,6 +1377,8 @@ class Schema:
     """Flags a node as deprecated, indicating to users that they should find alternatives to this node."""
     is_experimental: bool=False
     """Flags a node as experimental, informing users that it may change or not work as expected."""
+    is_dev_only: bool=False
+    """Flags a node as dev-only, hiding it from search/menus unless dev mode is enabled."""
     is_api_node: bool=False
     """Flags a node as an API node. See: https://docs.comfy.org/tutorials/api-nodes/overview."""
     price_badge: PriceBadge | None = None
@@ -1485,6 +1489,7 @@ class Schema:
             output_node=self.is_output_node,
             deprecated=self.is_deprecated,
             experimental=self.is_experimental,
+            dev_only=self.is_dev_only,
             api_node=self.is_api_node,
             python_module=getattr(cls, "RELATIVE_PYTHON_MODULE", "nodes"),
             price_badge=self.price_badge.as_dict(self.inputs) if self.price_badge is not None else None,
@@ -1519,6 +1524,7 @@ class Schema:
             output_node=self.is_output_node,
             deprecated=self.is_deprecated,
             experimental=self.is_experimental,
+            dev_only=self.is_dev_only,
             api_node=self.is_api_node,
             python_module=getattr(cls, "RELATIVE_PYTHON_MODULE", "nodes"),
             price_badge=self.price_badge.as_dict(self.inputs) if self.price_badge is not None else None,
@@ -1791,6 +1797,14 @@ class _ComfyNodeBaseInternal(_ComfyNodeInternal):
             cls.GET_SCHEMA()
         return cls._DEPRECATED
 
+    _DEV_ONLY = None
+    @final
+    @classproperty
+    def DEV_ONLY(cls):  # noqa
+        if cls._DEV_ONLY is None:
+            cls.GET_SCHEMA()
+        return cls._DEV_ONLY
+
     _API_NODE = None
     @final
     @classproperty
@@ -1893,6 +1907,8 @@ class _ComfyNodeBaseInternal(_ComfyNodeInternal):
             cls._EXPERIMENTAL = schema.is_experimental
         if cls._DEPRECATED is None:
             cls._DEPRECATED = schema.is_deprecated
+        if cls._DEV_ONLY is None:
+            cls._DEV_ONLY = schema.is_dev_only
         if cls._API_NODE is None:
             cls._API_NODE = schema.is_api_node
         if cls._OUTPUT_NODE is None:
diff --git a/server.py b/server.py
index 1888745b7..2aee5cc06 100644
--- a/server.py
+++ b/server.py
@@ -679,6 +679,8 @@ class PromptServer():
                 info['deprecated'] = True
             if getattr(obj_class, "EXPERIMENTAL", False):
                 info['experimental'] = True
+            if getattr(obj_class, "DEV_ONLY", False):
+                info['dev_only'] = True
 
             if hasattr(obj_class, 'API_NODE'):
                 info['api_node'] = obj_class.API_NODE