diff --git a/agentic_security/integrations/__init__.py b/agentic_security/integrations/__init__.py
index e69de29..dc138c1 100644
--- a/agentic_security/integrations/__init__.py
+++ b/agentic_security/integrations/__init__.py
@@ -0,0 +1,10 @@
+import asyncio
+from typing import Protocol
+
+
+class IntegrationProto(Protocol):
+    def __init__(
+        self, prompt_groups: list, tools_inbox: asyncio.Queue, opts: dict = {}
+    ): ...
+
+    async def apply(self) -> list: ...