feat: disable memory endpoint (#17626)

codex-rs/app-server/tests/suite/v2/experimental_api.rs

@@ -11,6 +11,8 @@ use codex_app_server_protocol::JSONRPCMessage;
 use codex_app_server_protocol::JSONRPCResponse;
 use codex_app_server_protocol::MockExperimentalMethodParams;
 use codex_app_server_protocol::RequestId;
+use codex_app_server_protocol::ThreadMemoryMode;
+use codex_app_server_protocol::ThreadMemoryModeSetParams;
 use codex_app_server_protocol::ThreadRealtimeStartParams;
 use codex_app_server_protocol::ThreadRealtimeStartTransport;
 use codex_app_server_protocol::ThreadStartParams;
@@ -89,6 +91,39 @@ async fn realtime_conversation_start_requires_experimental_api_capability() -> R
     Ok(())
 }
 
+#[tokio::test]
+async fn thread_memory_mode_set_requires_experimental_api_capability() -> Result<()> {
+    let codex_home = TempDir::new()?;
+    let mut mcp = McpProcess::new(codex_home.path()).await?;
+
+    let init = mcp
+        .initialize_with_capabilities(
+            default_client_info(),
+            Some(InitializeCapabilities {
+                experimental_api: false,
+                opt_out_notification_methods: None,
+            }),
+        )
+        .await?;
+    let JSONRPCMessage::Response(_) = init else {
+        anyhow::bail!("expected initialize response, got {init:?}");
+    };
+
+    let request_id = mcp
+        .send_thread_memory_mode_set_request(ThreadMemoryModeSetParams {
+            thread_id: "thr_123".to_string(),
+            mode: ThreadMemoryMode::Disabled,
+        })
+        .await?;
+    let error = timeout(
+        DEFAULT_TIMEOUT,
+        mcp.read_stream_until_error_message(RequestId::Integer(request_id)),
+    )
+    .await??;
+    assert_experimental_capability_error(error, "thread/memoryMode/set");
+    Ok(())
+}
+
 #[tokio::test]
 async fn realtime_webrtc_start_requires_experimental_api_capability() -> Result<()> {
     let codex_home = TempDir::new()?;