refactor: finish MCP SDK v2 migration

examples/map-server/main.ts

@@ -4,10 +4,10 @@
  * Or: node dist/index.js [--stdio]
  */
 
-import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
-import { createMcpExpressApp } from "@modelcontextprotocol/sdk/server/express.js";
-import type { McpServer } from "@modelcontextprotocol/sdk/server/mcp.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/map-server/package.json

@@ -26,10 +26,11 @@
     "serve": "bun --watch main.ts"
   },
   "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",
     "zod": "^4.1.13"

examples/map-server/server.ts

@@ -5,11 +5,11 @@
  * - geocode: Search for places using OpenStreetMap Nominatim
  * - show-map: Display an interactive 3D globe at a given location
  */
-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";
@@ -148,7 +148,7 @@ export function createServer(): McpServer {
       title: "Show Map",
       description:
         "Display an interactive world map zoomed to a specific bounding box. Use the GeoCode tool to find the bounding box of a location. The widget is interactive and exposes tools for navigation (fly to locations) and querying the current view.",
-      inputSchema: {
+      inputSchema: z.object({
         west: z
           .number()
           .optional()
@@ -173,7 +173,7 @@ export function createServer(): McpServer {
           .string()
           .optional()
           .describe("Optional label to display on the map"),
-      },
+      }),
       _meta: { ui: { resourceUri } },
     },
     async ({ west, south, east, north, label }): Promise<CallToolResult> => ({
@@ -196,13 +196,13 @@ export function createServer(): McpServer {
       title: "Geocode",
       description:
         "Search for places using OpenStreetMap. Returns coordinates and bounding boxes for up to 5 matches.",
-      inputSchema: {
+      inputSchema: z.object({
         query: z
           .string()
           .describe(
             "Place name or address to search for (e.g., 'Paris', 'Golden Gate Bridge', '1600 Pennsylvania Ave')",
           ),
-      },
+      }),
     },
     async ({ query }): Promise<CallToolResult> => {
       try {

examples/map-server/src/mcp-app.ts

@@ -6,7 +6,7 @@
  * a navigate-to tool for the host to control navigation.
  */
 import { App } from "@modelcontextprotocol/ext-apps";
-import type { ContentBlock } from "@modelcontextprotocol/sdk/spec.types.js";
+import type { ContentBlock } from "@modelcontextprotocol/client";
 import { z } from "zod";
 
 // TypeScript declaration for Cesium loaded from CDN