diff --git a/README.md b/README.md
index f51c00d3..32102b93 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ class YourOwnAgent(...):
     def act(self, **kwargs):
         ...    
 
-    def run(self, query: str, previous_experience: str):
+    def run(self, query: str):
         ...
 ```
 
diff --git a/cookbook/simple_agent/quick_start.md b/cookbook/simple_agent/quick_start.md
index 6214d6a6..239b9561 100644
--- a/cookbook/simple_agent/quick_start.md
+++ b/cookbook/simple_agent/quick_start.md
@@ -29,7 +29,7 @@ class YourOwnAgent(...):
     def act(self, **kwargs):
         ...    
 
-    def run(self, query: str, previous_experience: str):
+    def run(self, query: str):
         ...
 ```
 
diff --git a/cookbook/simple_agent/your_own_agent.py b/cookbook/simple_agent/your_own_agent.py
index 75582a67..dfc5726c 100644
--- a/cookbook/simple_agent/your_own_agent.py
+++ b/cookbook/simple_agent/your_own_agent.py
@@ -106,7 +106,7 @@ class YourOwnAgent(PromptMixin):
         return context.messages
 
 
-if __name__ == "__main__":
+def main():
     query = "Analyze Xiaomi Corporation."
     # query = "分析一下小米公司"
 
@@ -116,3 +116,6 @@ if __name__ == "__main__":
     logger.info(answer)
     with open("messages.jsonl", "w") as f:
         f.write(json.dumps([x.model_dump() for x in messages], indent=2, ensure_ascii=False))
+
+if __name__ == "__main__":
+    main()
diff --git a/experiencemaker/utils/http_client.py b/experiencemaker/utils/http_client.py
index 4a84d485..3f12e308 100644
--- a/experiencemaker/utils/http_client.py
+++ b/experiencemaker/utils/http_client.py
@@ -18,9 +18,9 @@ class HttpClient(BaseModel):
     request_start_time: float = Field(default_factory=time.time)
     request_time_cost: float = Field(default=0.0, description="request time cost")
 
-    retry_sleep_time: float = Field(0.5, description="interval time for retry")
-    retry_time_multiplier: float = Field(2.0, description="retry time multiplier")
-    retry_max_count: int = Field(1, description="maximum number of retries")
+    retry_sleep_time: float = Field(default=0.5, description="interval time for retry")
+    retry_time_multiplier: float = Field(default=2.0, description="retry time multiplier")
+    retry_max_count: int = Field(default=1, description="maximum number of retries")
 
     _client: Any = PrivateAttr()