Update app.py

app.py

@@ -6,11 +6,12 @@ import yaml
 from tools.final_answer import FinalAnswerTool
 from urllib.parse import quote
 import json
+from typing import List, Dict, Any
 
 from Gradio_UI import GradioUI
 
 @tool
-def get_books_for_subject(subject:str, published_in:str)-> str: 
+def get_books_for_subject(subject:str, published_in:str) -> List[Dict[str, Any]]:
     """A tool that fetches books for a given keyword.
     Args:
         subject: A string representing the subject (e.g. 'love', 'cars', 'Girls Aloud')
@@ -29,7 +30,7 @@ def get_books_for_subject(subject:str, published_in:str)-> str:
         book["authors"] = authors
         book["link"] = "https://openlibrary.org" + work["key"]
         books.append(book)
-    return json.dumps(books)
+    return books
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: