diff --git a/interactive_client.py b/interactive_client.py
new file mode 100644
index 0000000..09af72c
--- /dev/null
+++ b/interactive_client.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+"""Interactive test CLI client for RAG agent with /add, /search, /quit commands."""
+
+from rag_tools import search_knowledge_base, add_to_knowledge_base
+
+
+PROMPT = "> "
+
+
+def main():
+    print("=== RAG Knowledge Base CLI ===")
+    print("Commands: /add <title> | /search <query> | /quit")
+    print("-" * 40)
+
+    while True:
+        try:
+            user_input = input(PROMPT).strip()
+        except
+SŃQ\œ›Ü‹Ů^X›Ř\™[\œ\
+N‚ˆš[
+—žYHHŠBˆœ™XZ‚ˆYˆ›Ý\Ů\—Ú[œ]‚ˆŰ۝[YB‚ˆYˆ\Ů\—Ú[œ]œÝ\ÝÚ]
+‹ÜŮX\˜ÚŠN‚ˆ]Y\žHH\Ů\—Ú[œ]΋ÜŮX\˜ÚŽ…Ň .strip()
+            if not query:
+                print("Use: /search <your_query>")
+                continue
+            print("\nSearching...")
+            result = search_knowledge_base(query)
+            print(f"\n{result}\n")
+
+        elif user_input.startswith("/add "):
+            title_and_content = user_input[5:].strip()
+            if "|" in title_and_content:
+                parts = title_and_content.split("|", 1)
+                title = parts[0].strip()
+                content = parts[1].strip()
+            else:
+                title = title_and_content
+                content = input("Enter content: ").strip()
+
+            if not content:
+                print("Error: content cannot be empty.")
+                continue
+
+            result = add_to_knowledge_base(content, title)
+            print(f\n{result}\n")
+
+        elif user_input == "/quit":
+            print("Bye!")
+            break
+
+        else:
+            print(f"Unknown command: {user_input}")
+            print("Available: /add <title>|<content>, /search <query>, /quit")
+
+
+if __name__ == "__main__":
+    main()