diff --git a/VERSION b/VERSION
index 04a373e..c5523bd 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.16.0
+0.17.0
diff --git a/pyproject.toml b/pyproject.toml
index a40a2bf..851d222 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "arkruntime"
-version = "0.16.0"
+version = "0.17.0"
 description = "Ark runtime SDK for Python"
 readme = "README.md"
 requires-python = ">=3.8"
diff --git a/src/arkruntime/types/session/session_stream_shim.py b/src/arkruntime/types/session/session_stream_shim.py
index ffa2bda..9dde9d8 100644
--- a/src/arkruntime/types/session/session_stream_shim.py
+++ b/src/arkruntime/types/session/session_stream_shim.py
@@ -77,6 +77,8 @@ class ManagedAgentsStopReason(_DictCompatModel):
     """
 
     type: str = ""
+    # Pending input event IDs when type is requires_action.
+    event_ids: Optional[List[str]] = None
 
 
 class ManagedAgentsRetryStatus(_DictCompatModel):
diff --git a/tests/test_ark_apis_stop_reason_sync.py b/tests/test_ark_apis_stop_reason_sync.py
new file mode 100644
index 0000000..cc2c607
--- /dev/null
+++ b/tests/test_ark_apis_stop_reason_sync.py
@@ -0,0 +1,39 @@
+# Copyright (c) 2026 ByteDance Ltd. and/or its affiliates.
+# SPDX-License-Identifier: Apache-2.0
+
+"""Synced from ark-apis by vendor-session; exercise the real stream decoder."""
+
+import unittest
+
+from arkruntime.types.session import ManagedAgentsStopReason, decode_session_event
+
+
+class StreamStopReasonTests(unittest.TestCase):
+    def test_typed_pending_event_ids(self):
+        self.assertIn("event_ids", ManagedAgentsStopReason.model_fields)
+        for kind in ("session.status_idle", "session.thread_status_idle"):
+            for ids in (["sevt-a", "sevt-b"], ["sevt-b"], []):
+                payload = {
+                    "type": kind,
+                    "id": "sevt-idle",
+                    "stop_reason": {"type": "requires_action", "event_ids": ids},
+                }
+                if kind == "session.thread_status_idle":
+                    payload.update(session_thread_id="sthr-1", agent_name="agent")
+                with self.subTest(kind=kind, ids=ids):
+                    event = decode_session_event(payload)
+                    self.assertIsInstance(event.stop_reason, ManagedAgentsStopReason)
+                    self.assertEqual(event.stop_reason.event_ids, ids)
+                    self.assertEqual(event.stop_reason["event_ids"], ids)
+                    self.assertEqual(event.model_dump(exclude_unset=True), payload)
+
+    def test_legacy_and_future_reasons(self):
+        for kind in ("end_turn", "retries_exhausted", "future_reason"):
+            with self.subTest(kind=kind):
+                reason = ManagedAgentsStopReason(type=kind)
+                self.assertIsNone(reason.event_ids)
+                self.assertEqual(reason.model_dump(exclude_unset=True), {"type": kind})
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/uv.lock b/uv.lock
index a6ae632..572a22c 100644
--- a/uv.lock
+++ b/uv.lock
@@ -79,7 +79,7 @@ wheels = [
 
 [[package]]
 name = "arkruntime"
-version = "0.16.0"
+version = "0.17.0"
 source = { editable = "." }
 dependencies = [
     { name = "anyio", version = "4.5.2", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.9'" },