diff --git a/tools.py b/tools.py
index 7342633..8d5bdd6 100644
--- a/tools.py
+++ b/tools.py
@@ -1,51 +1,47 @@
-"""Tools for the RAG agent.
+"""Tool definitions for the RAG agent.
 
-Two tools are defined:
-1. search_knowledge_base – performs semantic search in the vector store.
-2. add_to_knowledge_base – adds a new document to the vector store.
+The tools are simple wrappers around the vector store functions defined in
+`vector_store.py`. They are decorated with `@tool` from LangChain so that the
+agent can call them.
 """
 
-from typing import List
+from typing import Any
+
 from langchain.tools import tool
-from langchain.schema import Document
-
-from vector_store import store
 
+from .vector_store import add_document, search
 
 @tool("search_knowledge_base")
-async def search_knowledge_base(query: str, max_results: int = 5) -> List[Document]:
-    """Search the knowledge base for relevant chunks.
+def search_knowledge_base(query: str, max_results: int = 5) -> Any:
+    """Semantic search in the knowledge base.
 
     Parameters
     ----------
     query: str
-        The search query.
-    max_results: int
-        Number of top results to return.
-
-    Returns
-    -------
-    List[Document]
-        List of documents returned by Qdrant similarity search.
+        The user query.
+    max_results: int, optional
+        Number of top results to return. Defaults to 5.
     """
-    return store.search(query, max_results)
-
+    results = search(query, max_results)
+    # Convert results to a readable string
+    formatted = "\n".join(
+        f"{i+1}. [{res['metadata'].get('title', 'Unknown')}] {res['content'][:200]}"
+        for i, res in enumerate(results)
+    )
+    return formatted if formatted else "No relevant documents found."
 
 @tool("add_to_knowledge_base")
-async def add_to_knowledge_base(content: str, title: str) -> str:
+def add_to_knowledge_base(content: str, title: str) -> Any:
     """Add a new document to the knowledge base.
 
     Parameters
     ----------
     content: str
-        Full text of the document.
+        The full text of the document.
     title: str
-        Title or identifier for the document.
-
-    Returns
-    -------
-    str
-        Confirmation message.
+        A short title that will be stored as metadata.
     """
-    store.add_document(content, title)
+    add_document(content, title)
     return f"Document '{title}' added to the knowledge base."
+
+__all__ = ["search_knowledge_base", "add_to_knowledge_base"]
\ No newline at end of file