diff --git a/tui_gateway/server.py b/tui_gateway/server.py
index fe66d3798..825822aad 100644
--- a/tui_gateway/server.py
+++ b/tui_gateway/server.py
@@ -2439,6 +2439,12 @@ def _(rid, params: dict) -> dict:
         unregister_gateway_notify(session["session_key"])
     except Exception:
         pass
+    try:
+        agent = session.get("agent")
+        if agent and hasattr(agent, "close"):
+            agent.close()
+    except Exception:
+        pass
     try:
         worker = session.get("slash_worker")
         if worker: