diff --git a/rdagent/components/workflow/rd_loop.py b/rdagent/components/workflow/rd_loop.py
index 3fd21aab..b7f217b8 100644
--- a/rdagent/components/workflow/rd_loop.py
+++ b/rdagent/components/workflow/rd_loop.py
@@ -87,3 +87,6 @@ class RDLoop(LoopBase, metaclass=LoopMeta):
             feedback = self.summarizer.generate_feedback(prev_out["running"], self.trace)
             logger.log_object(feedback, tag="feedback")
             self.trace.hist.append((prev_out["running"], feedback))
+
+    # TODO: `def record(self, prev_out: dict[str, Any]):` has already been hard coded into LoopBase
+    # So we should add it into RDLoop class to make sure every RDLoop Sub Class be aware of it.
diff --git a/rdagent/utils/workflow/loop.py b/rdagent/utils/workflow/loop.py
index ed2360e3..683bfa07 100644
--- a/rdagent/utils/workflow/loop.py
+++ b/rdagent/utils/workflow/loop.py
@@ -60,7 +60,8 @@ class LoopMeta(type):
         """
         steps = LoopMeta._get_steps(bases)  # all the base classes of parents
         for name, attr in attrs.items():
-            if not name.startswith("_") and callable(attr):
+            if not name.startswith("_") and callable(attr) and not isinstance(attr, type):
+                # NOTE: `not isinstance(attr, type)` is trying to exclude class type attribute
                 if name not in steps and name not in ["load", "dump"]:  # incase user override the load/dump method
                     # NOTE: if we override the step in the subclass
                     # Then it is not the new step. So we skip it.