Update tools.py

tools.py

@@ -13,6 +13,10 @@ openai.api_key = os.getenv("OPENAI_API_KEY")
 
 SYSTEM_PROMPT = """You are a general AI assistant. I will ask you a question. Report your thoughts, and finish your answer with the following template:
 FINAL ANSWER: [YOUR FINAL ANSWER].
+
+If you have enough confidence (≥70%) in your internal knowledge, answer directly without calling any other tool.
+Otherwise, decide which tool (wiki, web search, python, audio, excel) is best and use it.
+
 YOUR FINAL ANSWER should be:
 - a number OR as few words as possible OR a comma separated list of numbers and/or strings.
 - If you are asked for a number, don't use commas, symbols or units (e.g. %, $, km) unless explicitly asked.
@@ -64,7 +68,7 @@ class SpeechToTextTool(PipelineTool):
                 model="whisper-1",
                 response_format="text"
             )
-        return response  # already plain text
+        return response
 
 class ExcelToTextTool(Tool):
     """Renders an Excel worksheet as Markdown text."""
@@ -80,8 +84,9 @@ class ExcelToTextTool(Tool):
         path = Path(excel_path).expanduser().resolve()
         if not path.exists():
             return f"Error: Excel file not found at {path}"
-        # Determine sheet
-        sheet = 0 if not sheet_name or sheet_name == "" else (int(sheet_name) if sheet_name.isdigit() else sheet_name)
+        sheet = 0 if not sheet_name or sheet_name == "" else (
+            int(sheet_name) if sheet_name.isdigit() else sheet_name
+        )
         df = pd.read_excel(path, sheet_name=sheet)
         if hasattr(df, "to_markdown"):
             return df.to_markdown(index=False)