diff --git a/packages/cli/src/tui/hooks/use-conversations.ts b/packages/cli/src/tui/hooks/use-conversations.ts
index 0855eca..50078f7 100644
--- a/packages/cli/src/tui/hooks/use-conversations.ts
+++ b/packages/cli/src/tui/hooks/use-conversations.ts
@@ -31,18 +31,22 @@ export function useConversations(opts: UseConversationsOptions): UseConversation
   const [error, setError] = useState<string | null>(null);
   const mountedRef = useRef(true);
 
-  const headers = useCallback((): Record<string, string> => {
-    const h: Record<string, string> = { 'Content-Type': 'application/json' };
-    if (sessionCookie) h['Cookie'] = sessionCookie;
-    return h;
-  }, [sessionCookie]);
+  const headers = useCallback(
+    (includeContentType = true): Record<string, string> => {
+      const h: Record<string, string> = { Origin: gatewayUrl };
+      if (includeContentType) h['Content-Type'] = 'application/json';
+      if (sessionCookie) h['Cookie'] = sessionCookie;
+      return h;
+    },
+    [gatewayUrl, sessionCookie],
+  );
 
   const refresh = useCallback(async () => {
     if (!mountedRef.current) return;
     setLoading(true);
     setError(null);
     try {
-      const res = await fetch(`${gatewayUrl}/api/conversations`, { headers: headers() });
+      const res = await fetch(`${gatewayUrl}/api/conversations`, { headers: headers(false) });
       if (!res.ok) throw new Error(`HTTP ${res.status}`);
       const data = (await res.json()) as ConversationSummary[];
       if (mountedRef.current) {
@@ -93,7 +97,7 @@ export function useConversations(opts: UseConversationsOptions): UseConversation
       try {
         const res = await fetch(`${gatewayUrl}/api/conversations/${id}`, {
           method: 'DELETE',
-          headers: headers(),
+          headers: headers(false),
         });
         if (!res.ok) return false;
         if (mountedRef.current) {