diff --git a/lang_agent/rag/simple.py b/lang_agent/rag/simple.py
index 3c2b364..713aabd 100644
--- a/lang_agent/rag/simple.py
+++ b/lang_agent/rag/simple.py
@@ -32,8 +32,8 @@ class SimpleRagConfig(ToolConfig):
     def __post_init__(self):
         if self.api_key == "wrong-key":
             # logger.info("wrong embedding key, using simple retrieval method")
-            key = os.environ.get("ALI_API_KEY")
-            if key is None:
+            self.api_key = os.environ.get("ALI_API_KEY")
+            if self.api_key is None:
                 logger.error(f"no ALI_API_KEY provided for embedding")
 
 
@@ -66,7 +66,8 @@ class SimpleRag(LangToolBase):
         1. 用户询问“推荐一些辣味食物”，系统会检索并返回相关的辣味美食推荐文档。
         2. 用户搜索“适合夏天的清爽饮品”，系统会检索并返回相关饮品推荐及其来源信息。
         """
-        retrieved_docs:List[Document] = self.vec_store.search(query, search_kwargs={"k":3})
+        retrieved_docs:List[Document] = self.vec_store.similarity_search(query,
+                                                                         k=3)
         serialized = "\n\n".join(
             (f"Source: {doc.metadata}\nContent: {doc.page_content}")
             for doc in retrieved_docs
@@ -77,8 +78,10 @@ class SimpleRag(LangToolBase):
         return [self.retrieve]
 
 
-# if __name__ == "__main__":
+if __name__ == "__main__":
 #     # config = tyro.cli(SimpleRagConfig)
-#     config = SimpleRagConfig()
-#     rag:SimpleRag = config.setup()
+    config = SimpleRagConfig()
+    rag:SimpleRag = config.setup()
+    u = rag.retrieve("灯与尘")
+    print(u)
 #     mcp.run(transport="stdio")
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