diff --git a/CHANGELOG.md b/CHANGELOG.md
index f13a8ae..47de817 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,13 @@
 ## `TODO`
 
-- Multi-item nodes.
-- Bulk `Search & Replace` within **keys** in dictionary.
+The pack has already started to sip into dictionary-editing domain. Only the validator and the actual formatting node needs to stay. The rest need to go to their own repo.
+
+- ~~Multi-item nodes.~~
+- ~~Bulk `Search & Replace` within **keys** in dictionary.~~
+
+# v1.0.2
+
+- New node: `Validate Format-Dict`
 
 # v1.0.1
 
diff --git a/__init__.py b/__init__.py
index 4c613d2..0779f7d 100644
--- a/__init__.py
+++ b/__init__.py
@@ -9,6 +9,7 @@ from .node_dict_add_string import StringConstructorDictAddString
 from .node_dict_from_text import StringConstructorDictFromText
 from .node_dict_preview import StringConstructorDictPreview
 from .node_formatter import StringConstructorFormatter
+from .node_validate_keys import StringConstructorValidateKeys
 
 NODE_CLASS_MAPPINGS: _t.Dict[str, type] = {
 	'StringConstructorDictAddAny': StringConstructorDictAddAny,
@@ -16,6 +17,7 @@ NODE_CLASS_MAPPINGS: _t.Dict[str, type] = {
 	'StringConstructorDictFromText': StringConstructorDictFromText,
 	'StringConstructorDictPreview': StringConstructorDictPreview,
 	'StringConstructorFormatter': StringConstructorFormatter,
+	'StringConstructorValidateKeys': StringConstructorValidateKeys,
 }
 NODE_DISPLAY_NAME_MAPPINGS: _t.Dict[str, str] = {
 	'StringConstructorDictAddAny': "Add ANY to Format-Dict (Advanced)",
@@ -23,6 +25,7 @@ NODE_DISPLAY_NAME_MAPPINGS: _t.Dict[str, str] = {
 	'StringConstructorDictFromText': "Format-Dict from Text",
 	'StringConstructorDictPreview': "Preview Format-Dict",
 	'StringConstructorFormatter': "String Formatter",
+	'StringConstructorValidateKeys': "Validate Format-Dict",
 }
 
 __all__ = ['NODE_CLASS_MAPPINGS', 'NODE_DISPLAY_NAME_MAPPINGS']
diff --git a/funcs_common.py b/funcs_common.py
index c05db3e..0ffd27b 100644
--- a/funcs_common.py
+++ b/funcs_common.py
@@ -60,13 +60,15 @@ def _raise_from_errors_dict(
 	raise KeyError(msg)
 
 
-def _verify_input_dict(input_dict: _t.Dict[str, _T] = None) -> _t.Dict[str, _T]:
+def _verify_input_dict(input_dict: _t.Dict[str, _T] = None, error_if_none=False):
 	"""
 	Verify input dict to have only valid keys. Raises errors if invalid ones found.
-	Always returns a new dict instance (shallow copy if non-empty dict passed).
 	"""
 	if input_dict is None:
-		return dict()
+		if error_if_none:
+			raise TypeError("No input-dict")
+		return
+
 	if not isinstance(input_dict, dict):
 		raise TypeError(f"Input-dict isn't a dict. Got: {input_dict!r}")
 
@@ -78,4 +80,14 @@ def _verify_input_dict(input_dict: _t.Dict[str, _T] = None) -> _t.Dict[str, _T]:
 		errors_dict,
 		"Invalid input-dict:\n{}", "Invalid keys (string names) in input-dict:\n{}"
 	)
+
+
+def _verify_input_dict_into_new(input_dict: _t.Dict[str, _T] = None) -> _t.Dict[str, _T]:
+	"""
+	Verify input dict to have only valid keys. Raises errors if invalid ones found.
+	Always returns a new dict instance (shallow copy if non-empty dict passed).
+	"""
+	if input_dict is None:
+		return dict()
+	_verify_input_dict(input_dict)
 	return dict(input_dict)
diff --git a/funcs_dict_add_any.py b/funcs_dict_add_any.py
index 67b4d63..aa00f3d 100644
--- a/funcs_dict_add_any.py
+++ b/funcs_dict_add_any.py
@@ -7,7 +7,7 @@ import typing as _t
 
 from frozendict import deepfreeze as _deepfreeze
 
-from .funcs_common import _raise_from_errors_dict, _validate_key, _verify_input_dict
+from .funcs_common import _raise_from_errors_dict, _validate_key, _verify_input_dict_into_new
 
 
 def set_dict_any_type_item(
@@ -15,7 +15,7 @@ def set_dict_any_type_item(
 	# unique_id: str = None,
 ) -> _t.Tuple[_t.Dict[str, _t.Any]]:
 	"""Update/append an item of any type to the dict."""
-	out_dict: _t.Dict[str, _t.Any] = _verify_input_dict(in_dict)
+	out_dict: _t.Dict[str, _t.Any] = _verify_input_dict_into_new(in_dict)
 	if value is None:
 		return (_deepfreeze(in_dict), )  # No need to create another dict instance if it's already frozen
 
diff --git a/funcs_dict_add_string.py b/funcs_dict_add_string.py
index 902d003..a396d32 100644
--- a/funcs_dict_add_string.py
+++ b/funcs_dict_add_string.py
@@ -8,7 +8,7 @@ import typing as _t
 from frozendict import deepfreeze as _deepfreeze
 
 from .enums import T as _T
-from .funcs_common import _raise_from_errors_dict, _validate_key, _verify_input_dict
+from .funcs_common import _raise_from_errors_dict, _validate_key, _verify_input_dict_into_new
 
 
 def set_dict_string(
@@ -16,7 +16,7 @@ def set_dict_string(
 	# unique_id: str = None,
 ) -> _t.Tuple[_t.Dict[str, _t.Union[_T, str]]]:
 	"""Update/append a string to the dict."""
-	out_dict: _t.Dict[str, _t.Union[_T, str]] = _verify_input_dict(in_dict)
+	out_dict: _t.Dict[str, _t.Union[_T, str]] = _verify_input_dict_into_new(in_dict)
 	errors_dict: _t.Dict[_t.Any, str] = dict()
 	name = _validate_key(name, errors_dict)
 	_raise_from_errors_dict(errors_dict)
diff --git a/funcs_dict_from_text.py b/funcs_dict_from_text.py
index 0a22aba..5ed9bac 100644
--- a/funcs_dict_from_text.py
+++ b/funcs_dict_from_text.py
@@ -8,7 +8,7 @@ import typing as _t
 from frozendict import frozendict as _frozendict, deepfreeze as _deepfreeze
 
 from .enums import T as _T
-from .funcs_common import _show_text_on_node, _raise_from_errors_dict, _validate_key, _verify_input_dict
+from .funcs_common import _show_text_on_node, _raise_from_errors_dict, _validate_key, _verify_input_dict_into_new
 
 
 def _return_line_raw(line_raw: str, line_stripped:str) -> str:
@@ -61,7 +61,7 @@ def parse_dict_from_text(
 	multiline_str: str, strip_lines=True,
 	show: bool = True, in_dict: _t.Dict[str, _T] = None, unique_id: str = None
 ) -> _t.Tuple[_t.Dict[str, _T]]:
-	out_dict: _t.Dict[str, _T] = _verify_input_dict(in_dict)
+	out_dict: _t.Dict[str, _T] = _verify_input_dict_into_new(in_dict)
 
 	errors_dict: _t.Dict[_t.Any, str] = dict()
 	new_dict: _t.Dict[str, str] = {
diff --git a/funcs_dict_preview.py b/funcs_dict_preview.py
index 0285211..de1ab0e 100644
--- a/funcs_dict_preview.py
+++ b/funcs_dict_preview.py
@@ -7,7 +7,7 @@ import typing as _t
 
 from pprint import pformat as _pformat
 
-from .funcs_common import _show_text_on_node, _verify_input_dict
+from .funcs_common import _show_text_on_node, _verify_input_dict_into_new
 
 
 def _to_regular_dict_recursive_copy(input_dict: dict = None) -> dict:
@@ -32,7 +32,7 @@ def _preview_single_entry(key: str, value) -> str:
 
 
 def _preview_message(input_dict: dict = None):
-	input_dict = _to_regular_dict_recursive_copy(_verify_input_dict(input_dict))
+	input_dict = _to_regular_dict_recursive_copy(_verify_input_dict_into_new(input_dict))
 	parts: _t.List[str] = [
 		_preview_single_entry(k, v) for k, v in input_dict.items()
 	]
diff --git a/funcs_formatter.py b/funcs_formatter.py
index 46d4646..9b36a37 100644
--- a/funcs_formatter.py
+++ b/funcs_formatter.py
@@ -7,7 +7,7 @@ import typing as _t
 
 import sys as _sys
 
-from .funcs_common import _show_text_on_node, _verify_input_dict
+from .funcs_common import _show_text_on_node, _verify_input_dict_into_new
 
 
 _RECURSION_LIMIT = max(int(_sys.getrecursionlimit()), 10)  # You can externally monkey-patch it... but if it blows up, your fault 🤷🏻‍♂️
@@ -45,7 +45,7 @@ def formatter(
 	template: str, recursive: bool = False, format_dict: _t.Dict[str, _t.Any] = None,
 	show: bool = True, unique_id: str = None
 ) -> _t.Tuple[str]:
-	format_dict = _verify_input_dict(format_dict)
+	format_dict = _verify_input_dict_into_new(format_dict)
 	if not isinstance(template, str):
 		raise TypeError(f"Not a string: {template!r}")
 
diff --git a/node_validate_keys.py b/node_validate_keys.py
new file mode 100644
index 0000000..5ab0b58
--- /dev/null
+++ b/node_validate_keys.py
@@ -0,0 +1,61 @@
+# encoding: utf-8
+"""
+"""
+
+import typing as _t
+
+from inspect import cleandoc as _cleandoc
+
+from frozendict import deepfreeze as _deepfreeze
+
+from . import _meta
+from .docstring_formatter import format_docstring as _format_docstring
+from .enums import DataTypes as _DataTypes
+from .funcs_common import _verify_input_dict, _show_text_on_node, _T
+
+
+_input_types = _deepfreeze({
+	'required': {
+		'dict': _DataTypes.input_dict(),
+	},
+	# 'optional': {},
+	# 'hidden': {
+	# 	'unique_id': 'UNIQUE_ID',  # used for text display at the bottom of the node
+	# },
+})
+
+
+class StringConstructorValidateKeys:
+	"""
+	Verify the dict to have string-formatting-compatible keys. No need to add it before "String Formatter" node,
+	but it might be handy to verify the dict right after it's created.
+	"""
+	NODE_NAME = 'StringConstructorValidateKeys'
+	CATEGORY = _meta.category
+	DESCRIPTION = _format_docstring(_cleandoc(__doc__))
+
+	OUTPUT_NODE = True
+
+	FUNCTION = 'main'
+	RETURN_TYPES = (_DataTypes.DICT, )
+	RETURN_NAMES = (_DataTypes.DICT.lower(), )
+	# OUTPUT_TOOLTIPS = tuple()
+
+	@classmethod
+	def INPUT_TYPES(cls):
+		return _input_types
+
+	@staticmethod
+	def main(
+		dict: _t.Dict[str, _T],
+		# unique_id: str = None,
+	) -> _t.Tuple[_t.Dict[str, _T]]:
+		# try:
+		# 	_verify_input_dict(dict, error_if_none=True)
+		# except Exception:
+		# 	_show_text_on_node('❌', unique_id)
+		# 	raise
+		# 	return (Null, )
+		# _show_text_on_node('✅', unique_id)
+		_verify_input_dict(dict, error_if_none=True)
+		return (dict, )
diff --git a/pyproject.toml b/pyproject.toml
index d129d83..2c1abcb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "string-constructor"
-description = "Composing prompt variants from the same text pieces with ease:\n• Build your \"library\" (dictionary) of named text chunks (sub-strings) to use it across the entire workflow.\n• Compile these snippets into different prompts in-place - with just one string formatting node.\n• Freely update the dictionary down the line - get different prompts.\n• Reference text chunks within each other to build dependent hierarchies of less/more detailed descriptions.\n• A real life-saver for regional prompting (aka area composition)."
-version = "1.0.1"
+description = "String formatting (compiling text from pieces) made for humans:\n• Turn parts of prompt into a dictionary - to share them all across the entire workflow as a single connection.\n• Compose your prompt in-place from these snippets and regular text - with just one text field.\n• Easily update the dictionary down the line - get different prompts from the same template.\n• Reference text chunks within each other to build complex hierarchies of self-updating prompts.\n• A true time-saver for regional prompting (aka area composition)."
+version = "1.0.2"
 authors = [
   {name = "Lex Darlog"}
 ]