added tavily tools

app.py

@@ -128,7 +128,7 @@ def create_tools(cfg):
         texts = [get_story_text(story_id) for story_id in stories[:n_stories]]
         all_stories = '---------\n\n'.join(texts)
         return summarize_text(all_stories)
-
+    
     return (
         tools_factory.get_tools(
                 [
@@ -137,9 +137,10 @@ def create_tools(cfg):
                     get_ask_stories,
                     get_story_details,
                     get_story_text,
-                    whats_new
+                    whats_new,
                 ]
             ) +
+        tools_factory.get_llama_index_tools("tavily_research", "TavilyToolSpec", api_key=cfg.tavily_api_key) +
         tools_factory.standard_tools() + 
         tools_factory.guardrail_tools() +
         [ask_hackernews]
@@ -201,7 +202,8 @@ def launch_bot():
             'customer_id': str(os.environ['VECTARA_CUSTOMER_ID']),
             'corpus_id': str(os.environ['VECTARA_CORPUS_ID']),
             'api_key': str(os.environ['VECTARA_API_KEY']),
-            'examples': os.environ.get('QUERY_EXAMPLES', None)
+            'examples': os.environ.get('QUERY_EXAMPLES', None),
+            'tavily_api_key': str(os.environ['TAVILY_API_KEY']),
         })
         st.session_state.cfg = cfg
         st.session_state.ex_prompt = None