diff --git a/rag_tools.py b/rag_tools.py
new file mode 100644
index 0000000..dd1e622
--- /dev/null
+++ b/rag_tools.py
@@ -0,0 +1,18 @@
+from langchain.tools import tool
+from vector_store import QdrantStore
+from chunker import get_chunks
+
+store = QdrantStore()
+
+@tool
+def search_knowledge_base(query: str, max_results: int = 5) -> str:
+    """Semantic search in knowledge base."""
+    results = store.search(query, limit=max_results)
+    return "\n".join([f"{i+1}. {r.metadata.get('title', 'no title')}" for i,r in enumerate(results)])
+
+@tool
+def add_to_knowledge_base(content: str, title: str) -> str:
+    """Add document to knowledge base."""
+    chunks = get_chunks(content, title)
+    store.add_documents(chunks)
+    return f"Added {len(chunks)} chunks for title '{title}'."