diff --git a/mocket/decorators/mocketizer.py b/mocket/decorators/mocketizer.py
index fb7c811..4174532 100644
--- a/mocket/decorators/mocketizer.py
+++ b/mocket/decorators/mocketizer.py
@@ -1,3 +1,8 @@
+from __future__ import annotations
+
+import functools
+import inspect
+
 from mocket.mocket import Mocket
 from mocket.mode import MocketMode
 from mocket.utils import get_mocketize
@@ -60,7 +65,7 @@ def check_and_call(self, method_name):
     def factory(test, truesocket_recording_dir, strict_mode, strict_mode_allowed, args):
         instance = args[0] if args else None
         namespace = None
-        if truesocket_recording_dir:
+        if truesocket_recording_dir and instance:
             namespace = ".".join(
                 (
                     instance.__class__.__module__,
@@ -78,7 +83,7 @@ def factory(test, truesocket_recording_dir, strict_mode, strict_mode_allowed, ar
         )
 
 
-def wrapper(
+def _function_wrapper(
     test,
     truesocket_recording_dir=None,
     strict_mode=False,
@@ -92,4 +97,54 @@ def wrapper(
         return test(*args, **kwargs)
 
 
-mocketize = get_mocketize(wrapper)
+_function_mocketize = get_mocketize(_function_wrapper)
+
+
+def _class_decorator_factory(**options):
+    def decorator(cls):
+        orig_setup = getattr(cls, "setUp", lambda self, *a, **kw: None)
+        orig_td = getattr(cls, "tearDown", lambda self, *a, **kw: None)
+        use_add_cleanup = hasattr(cls, "addCleanup")
+
+        def setUp(self, *a, **kw):
+            ctx = Mocketizer(instance=self, **options)
+            ctx.enter()
+            if use_add_cleanup:
+                self.addCleanup(ctx.exit)
+            else:
+                self.__mocket_ctx = ctx
+            orig_setup(self, *a, **kw)
+
+        cls.setUp = functools.wraps(orig_setup)(setUp)
+
+        if not use_add_cleanup:
+
+            def tearDown(self, *a, **kw):
+                try:
+                    orig_td(self, *a, **kw)
+                finally:
+                    if hasattr(self, "__mocket_ctx"):
+                        self.__mocket_ctx.exit()
+
+            cls.tearDown = functools.wraps(orig_td)(tearDown)
+
+        return cls
+
+    return decorator
+
+
+def mocketize(*dargs, **dkwargs):
+    # bare @mocketize
+    if dargs and len(dargs) == 1 and callable(dargs[0]) and not dkwargs:
+        target = dargs[0]
+        if inspect.isclass(target):
+            return _class_decorator_factory()(target)
+        return _function_mocketize(target)
+
+    # @mocketize(...)
+    def real_decorator(target):
+        if inspect.isclass(target):
+            return _class_decorator_factory(**dkwargs)(target)
+        return _function_mocketize(**dkwargs)(target)
+
+    return real_decorator