Update agent.py

agent.py

@@ -68,6 +68,10 @@ def youtube_transcript(video_url: str) -> str:
 # 4. File Reading
 @tool
 def read_file(dir: str) -> str:
+    """Read the content of the file
+    Args:
+        dir: the filepath
+    """
     extension = dir.split['.'][-1]
     if extension == 'pdf':
         reader = PdfReader(dir)