diff --git a/cli.py b/cli.py
new file mode 100644
index 0000000..9324068
--- /dev/null
+++ b/cli.py
@@ -0,0 +1,68 @@
+"""Simple CLI for interacting with the RAG agent.
+
+Commands:
+  /add <title> <file_path>   - Add a document to the knowledge base.
+  /search <query> [max]      - Search the knowledge base.
+  /quit                      - Exit the CLI.
+"""
+
+import sys
+from pathlib import Path
+
+# Import the tools directly. They are decorated with @tool but can be called like normal functions.
+from rag_tools import add_to_knowledge_base, search_knowledge_base
+
+
+def main():
+    print("Welcome to the RAG Agent CLI. Type /help for commands.")
+    while True:
+        try:
+            user_input = input(">> ")
+        except (EOFError, KeyboardInterrupt):
+            print("\nExiting.")
+            break
+        if not user_input:
+            continue
+        if user_input.startswith("/help"):
+            print("Commands:\n  /add <title> <file_path>   - Add a document to the knowledge base.\n  /search <query> [max]      - Search the knowledge base.\n  /quit                      - Exit the CLI.")
+            continue
+        if user_input.startswith("/quit"):
+            print("Goodbye!")
+            break
+        if user_input.startswith("/add"):
+            parts = user_input.split(maxsplit=2)
+            if len(parts) < 3:
+                print("Usage: /add <title> <file_path>")
+                continue
+            title, file_path = parts[1], parts[2]
+            try:
+                content = Path(file_path).read_text(encoding="utf-8")
+            except Exception as e:
+                print(f"Error reading file: {e}")
+                continue
+            print("Adding document...", end=" ")
+            result = add_to_knowledge_base(content=content, title=title)
+            print(result)
+            continue
+        if user_input.startswith("/search"):
+            parts = user_input.split(maxsplit=2)
+            if len(parts) < 2:
+                print("Usage: /search <query> [max_results]")
+                continue
+            query = parts[1]
+            max_results = 5
+            if len(parts) == 3:
+                try:
+                    max_results = int(parts[2])
+                except ValueError:
+                    print("max_results must be an integer.")
+                    continue
+            print("Searching...", end=" ")
+            result = search_knowledge_base(query=query, max_results=max_results)
+            print(result)
+            continue
+        print("Unknown command. Type /help for a list of commands.")
+
+
+if __name__ == "__main__":
+    main()