refactor: finish MCP SDK v2 migration

examples/basic-server-react/main.ts

@@ -4,10 +4,10 @@
  * Or: node dist/index.js [--stdio]
  */
 
-import { createMcpExpressApp } from "@modelcontextprotocol/sdk/server/express.js";
-import type { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
-import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
-import { StreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/streamableHttp.js";
+import { createMcpExpressApp } from "@modelcontextprotocol/express";
+import { NodeStreamableHTTPServerTransport } from "@modelcontextprotocol/node";
+import type { McpServer } from "@modelcontextprotocol/server";
+import { StdioServerTransport } from "@modelcontextprotocol/server/stdio";
 import cors from "cors";
 import type { Request, Response } from "express";
 import { createServer } from "./server.js";
@@ -27,7 +27,7 @@ export async function startStreamableHTTPServer(
 
   app.all("/mcp", async (req: Request, res: Response) => {
     const server = createServer();
-    const transport = new StreamableHTTPServerTransport({
+    const transport = new NodeStreamableHTTPServerTransport({
       sessionIdGenerator: undefined,
     });
 

examples/basic-server-react/package.json

@@ -34,10 +34,11 @@
     "prepublishOnly": "npm run build"
   },
   "dependencies": {
+    "@modelcontextprotocol/client": "2.0.0-beta.4",
     "@modelcontextprotocol/ext-apps": "^1.7.0",
     "@modelcontextprotocol/express": "2.0.0-beta.4",
     "@modelcontextprotocol/node": "2.0.0-beta.4",
-    "@modelcontextprotocol/sdk": "^1.29.0",
+    "@modelcontextprotocol/server": "2.0.0-beta.4",
     "cors": "^2.8.5",
     "express": "^5.1.0",
     "react": "^19.2.0",

examples/basic-server-react/server.ts

@@ -1,8 +1,12 @@
 import { registerAppResource, registerAppTool, RESOURCE_MIME_TYPE } from "@modelcontextprotocol/ext-apps/server";
-import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
-import type { CallToolResult, ReadResourceResult } from "@modelcontextprotocol/sdk/types.js";
+import {
+  McpServer,
+  type CallToolResult,
+  type ReadResourceResult,
+} from "@modelcontextprotocol/server";
 import fs from "node:fs/promises";
 import path from "node:path";
+import { z } from "zod";
 
 // Works both from source (server.ts) and compiled (dist/server.js)
 const DIST_DIR = import.meta.filename.endsWith(".ts")
@@ -29,7 +33,7 @@ export function createServer(): McpServer {
     {
       title: "Get Time",
       description: "Returns the current server time as an ISO 8601 string.",
-      inputSchema: {},
+      inputSchema: z.object({}),
       _meta: { ui: { resourceUri } }, // Links this tool to its UI resource
     },
     async (): Promise<CallToolResult> => {

examples/basic-server-react/src/mcp-app.tsx

@@ -3,7 +3,7 @@
  */
 import type { App, McpUiHostContext } from "@modelcontextprotocol/ext-apps";
 import { useApp } from "@modelcontextprotocol/ext-apps/react";
-import type { CallToolResult } from "@modelcontextprotocol/sdk/types.js";
+import type { CallToolResult } from "@modelcontextprotocol/client";
 import { StrictMode, useCallback, useEffect, useState } from "react";
 import { createRoot } from "react-dom/client";
 import styles from "./mcp-app.module.css";