diff --git a/examples/post_training/supervised_fine_tune_client.py b/examples/post_training/supervised_fine_tune_client.py
index 705dfad..a8b3cc9 100644
--- a/examples/post_training/supervised_fine_tune_client.py
+++ b/examples/post_training/supervised_fine_tune_client.py
@@ -26,8 +26,9 @@ async def run_main(
     port: int,
     job_uuid: str,
     model: str,
-    model_descriptor: str,
-    use_https: bool = False,
+    run_eval: bool = False,
+    model_descriptor: Optional[str] = "null",
+    use_https: Optional[bool] = False,
     checkpoint_dir: Optional[str] = None,
     cert_path: Optional[str] = None,
 ):
@@ -92,6 +93,10 @@ async def run_main(
 
     print(f"finished the training job: {training_job.job_uuid}")
 
+    if not run_eval:
+        return
+
+    # register the finetuned model before eval
     response = client.models.register(
         model_id=f"{model_descriptor}-sft-{training_config['n_epochs']-1}",
         provider_id="meta-reference-inference",
@@ -103,6 +108,10 @@ async def run_main(
         f"registerd model {model_descriptor}-sft-{training_config['n_epochs']-1} successfully"
     )
 
+    # register the eval dataset, please see https://llama-stack.readthedocs.io/en/latest/benchmark_evaluations/index.html
+    # for more details and examples
+    # this is just an simple example to showcase how to run eval on a finetuned model
+    # you can register your own eval task base on your need
     response = client.datasets.register(
         dataset_id="post_training_eval",
         provider_id="huggingface-0",
@@ -159,8 +168,9 @@ def main(
     port: int,
     job_uuid: str,
     model: str,
-    model_descriptor: str,
-    use_https: bool = False,
+    run_eval: bool = False,
+    model_descriptor: Optional[str] = "null",
+    use_https: Optional[bool] = False,
     checkpoint_dir: Optional[str] = "null",
     cert_path: Optional[str] = None,
 ):
@@ -171,6 +181,7 @@ def main(
             port,
             job_uuid,
             model,
+            run_eval,
             model_descriptor,
             use_https,
             checkpoint_dir,