diff --git a/acp_adapter/session.py b/acp_adapter/session.py
index 6f1e17a07f57..995752e26ba4 100644
--- a/acp_adapter/session.py
+++ b/acp_adapter/session.py
@@ -640,6 +640,7 @@ def _make_agent(
                     "api_mode": api_mode or runtime.get("api_mode"),
                     "base_url": base_url or runtime.get("base_url"),
                     "api_key": runtime.get("api_key"),
+                    "credential_pool": runtime.get("credential_pool"),
                     "command": runtime.get("command"),
                     "args": list(runtime.get("args") or []),
                 }
diff --git a/tests/acp/test_session.py b/tests/acp/test_session.py
index 199454b39dba..cc7493454d55 100644
--- a/tests/acp/test_session.py
+++ b/tests/acp/test_session.py
@@ -77,7 +77,9 @@ def test_get_session(self, manager):
     def test_get_nonexistent_session_returns_none(self, manager):
         assert manager.get_session("does-not-exist") is None
 
-    def test_make_agent_stamps_session_cwd_for_codex_runtime(self, monkeypatch):
+    def test_make_agent_stamps_cwd_and_forwards_runtime_credential_pool(self, monkeypatch):
+        sentinel_pool = object()
+
         class FakeAgent:
             model = "fake-model"
 
@@ -113,6 +115,7 @@ def __init__(self, **kwargs):
                 "api_mode": "codex_app_server",
                 "base_url": "https://example.invalid",
                 "api_key": "test-key",
+                "credential_pool": sentinel_pool,
             },
         )
         monkeypatch.setattr("acp_adapter.session._register_task_cwd", lambda task_id, cwd: None)
@@ -120,8 +123,7 @@ def __init__(self, **kwargs):
         state = SessionManager(db=None).create_session(cwd="/tmp/project")
 
         assert state.agent.session_cwd == "/tmp/project"
-
-
+        assert state.agent.kwargs["credential_pool"] is sentinel_pool
 
 
 # ---------------------------------------------------------------------------