diff --git a/scopes/core/__init__.py b/scopes/core/__init__.py
new file mode 100644
index 0000000..1d165e4
--- /dev/null
+++ b/scopes/core/__init__.py
@@ -0,0 +1 @@
+"""package scopes.core"""
diff --git a/scopes/core/actor.py b/scopes/core/actor.py
new file mode 100644
index 0000000..87fa195
--- /dev/null
+++ b/scopes/core/actor.py
@@ -0,0 +1,33 @@
+""" package scopes.core.actor """
+
+import asyncio
+
+quit = object()
+
+async def loop(q, bhv):
+    while True:
+        msg = await q.get()
+        if msg == quit:
+            break
+        bhv(msg)
+
+def create(q, bhv):
+    return asyncio.create_task(loop(q, bhv))
+
+# some simple behaviors
+
+def show(msg):
+    print(msg)
+
+# main
+
+async def main():
+    q = asyncio.Queue()
+    task = create(q, show)
+    await q.put("Hello World!")
+    await q.put(quit)
+    await task
+
+def run():
+    asyncio.run(main())
+