diff --git a/codex-rs/core/src/agent/control/sender_context.rs b/codex-rs/core/src/agent/control/sender_context.rs
index 184a5add14..b056b43bc7 100644
--- a/codex-rs/core/src/agent/control/sender_context.rs
+++ b/codex-rs/core/src/agent/control/sender_context.rs
@@ -38,6 +38,7 @@ impl LocalAgentRuntime {
         if !matches!(
             (namespace.as_str(), name.as_str()),
             ("codex_app" | "codex_tui", "send_message_to_thread")
+                | ("codex_app", "create_thread")
                 | ("cloud_threads", "send_message")
         ) {
             return None;
diff --git a/codex-rs/core/tests/suite/guardian_sender_messages_tests.rs b/codex-rs/core/tests/suite/guardian_sender_messages_tests.rs
index d49508fe09..ffef743326 100644
--- a/codex-rs/core/tests/suite/guardian_sender_messages_tests.rs
+++ b/codex-rs/core/tests/suite/guardian_sender_messages_tests.rs
@@ -16,6 +16,7 @@ use pretty_assertions::assert_eq;
 use serde_json::json;
 
 #[test_case::test_case(None, "codex_app", "send_message_to_thread", 0; "default")]
+#[test_case::test_case(None, "codex_app", "create_thread", 0; "desktop create thread")]
 #[test_case::test_case(Some(false), "codex_app", "send_message_to_thread", 0; "retired opt out")]
 #[test_case::test_case(None, "codex_tui", "send_message_to_thread", 0; "tui")]
 #[test_case::test_case(None, "cloud_threads", "send_message", 0; "cloud threads")]