Node.js adapters for the MCP TypeScript server SDK.
This package is a thin Node.js integration layer for @modelcontextprotocol/server. It provides a Streamable HTTP transport that works with Node’s IncomingMessage / ServerResponse.
For web‑standard runtimes (Cloudflare Workers, Deno, Bun, etc.), use WebStandardStreamableHTTPServerTransport from @modelcontextprotocol/server directly.
npm install @modelcontextprotocol/server @modelcontextprotocol/nodeNodeStreamableHTTPServerTransportStreamableHTTPServerTransportOptions(type alias forWebStandardStreamableHTTPServerTransportOptions)toNodeHandler(handler, opts?)— adapt a web-standard{ fetch }MCP handler to a Node(req, res, parsedBody?)handlerToNodeHandlerOptions,FetchLikeMcpHandler,NodeMcpRequestHandler(types fortoNodeHandler)NodeIncomingMessageLike,NodeServerResponseLike(structural Node request/response shapes)
import { createMcpExpressApp } from '@modelcontextprotocol/express';
import { NodeStreamableHTTPServerTransport } from '@modelcontextprotocol/node';
import { McpServer } from '@modelcontextprotocol/server';
const server = new McpServer({ name: 'my-server', version: '1.0.0' });
const app = createMcpExpressApp();
app.post('/mcp', async (req, res) => {
const transport = new NodeStreamableHTTPServerTransport({ sessionIdGenerator: undefined });
await server.connect(transport);
// If you use Express JSON parsing, pass the pre-parsed body to avoid re-reading the stream.
await transport.handleRequest(req, res, req.body);
});import { createServer } from 'node:http';
import { NodeStreamableHTTPServerTransport } from '@modelcontextprotocol/node';
import { McpServer } from '@modelcontextprotocol/server';
const server = new McpServer({ name: 'my-server', version: '1.0.0' });
createServer(async (req, res) => {
const transport = new NodeStreamableHTTPServerTransport({ sessionIdGenerator: undefined });
await server.connect(transport);
await transport.handleRequest(req, res);
}).listen(3000);