From 482d48d5bf609aa7111fe5125d66afccfde78272 Mon Sep 17 00:00:00 2001
From: Christian Sidak <csidak@gmail.com>
Date: Sun, 12 Apr 2026 11:23:38 -0700
Subject: [PATCH] feat: handle tools/resources/prompts list_changed
 notifications

Add handlers for notifications/tools/list_changed,
notifications/resources/list_changed, and
notifications/prompts/list_changed in the onNotification callback.

When a server sends these notifications, the inspector now resets
pagination cursors and re-fetches the corresponding lists, enabling
dynamic tool/resource/prompt registration use cases such as gateway
MCP servers that load/unload capabilities at runtime.

Fixes #832
---
 client/src/App.tsx | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/client/src/App.tsx b/client/src/App.tsx
index 59d15ba06..181aea91d 100644
--- a/client/src/App.tsx
+++ b/client/src/App.tsx
@@ -401,6 +401,27 @@ const App = () => {
     onNotification: (notification) => {
       setNotifications((prev) => [...prev, notification as ServerNotification]);
 
+      if (notification.method === "notifications/tools/list_changed") {
+        setNextToolCursor(undefined);
+        setTools([]);
+        void listTools();
+      }
+
+      if (notification.method === "notifications/resources/list_changed") {
+        setNextResourceCursor(undefined);
+        setNextResourceTemplateCursor(undefined);
+        setResources([]);
+        setResourceTemplates([]);
+        void listResources();
+        void listResourceTemplates();
+      }
+
+      if (notification.method === "notifications/prompts/list_changed") {
+        setNextPromptCursor(undefined);
+        setPrompts([]);
+        void listPrompts();
+      }
+
       if (notification.method === "notifications/tasks/list_changed") {
         void listTasks();
       }