Adding tavily instead of duckduckgosearch

requirements.txt

@@ -7,6 +7,7 @@ langchain>=0.3.27
 langchain-community>=0.3.27
 langchain-core>=0.3.74
 langchain-huggingface>=0.3.1
+langchain-tavily>=0.2.11
 langgraph>=0.6.6
 rank-bm25>=0.2.2
 sentence-transformers>=5.1.0

tools.py

@@ -5,10 +5,23 @@ from langchain_community.retrievers import WikipediaRetriever
 from langchain_community.document_loaders import ArxivLoader, WikipediaLoader
 from langchain_core.documents import Document
 from langchain_core.tools import tool
+from langchain_tavily import TavilySearch
 from sentence_transformers import SentenceTransformer
 
 
-search_tool = DuckDuckGoSearchRun()
+
+search_tool = TavilySearch(
+    max_results=5,
+    topic="general",
+    # include_answer=False,
+    # include_raw_content=False,
+    # include_images=False,
+    # include_image_descriptions=False,
+    # search_depth="basic",
+    # time_range="day",
+    # include_domains=None,
+    # exclude_domains=None
+)
 
 @tool
 def wikipedia_search(query: str) -> str: