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Improve stateless example #587

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19 changes: 15 additions & 4 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -312,16 +312,27 @@ app.listen(3000);
For simpler use cases where session management isn't needed:

```typescript
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/streamableHttp.js";
import express from "express";

const server = new McpServer({
name: "Stateless Streamable HTTP Server",
version: "1.0.0"
});

// register tools here

const app = express();
app.use(express.json());

app.post('/mcp', async (req: Request, res: Response) => {

app.post('/mcp', async (req: express.Request, res: express.Response) => {
// In stateless mode, create a new instance of transport and server for each request
// to ensure complete isolation. A single instance would cause request ID collisions
// when multiple clients connect concurrently.

try {
const server = getServer();
const transport: StreamableHTTPServerTransport = new StreamableHTTPServerTransport({
sessionIdGenerator: undefined,
});
Expand All @@ -347,7 +358,7 @@ app.post('/mcp', async (req: Request, res: Response) => {
}
});

app.get('/mcp', async (req: Request, res: Response) => {
app.get('/mcp', async (req: express.Request, res: express.Response) => {
console.log('Received GET MCP request');
res.writeHead(405).end(JSON.stringify({
jsonrpc: "2.0",
Expand All @@ -359,7 +370,7 @@ app.get('/mcp', async (req: Request, res: Response) => {
}));
});

app.delete('/mcp', async (req: Request, res: Response) => {
app.delete('/mcp', async (req: express.Request, res: express.Response) => {
console.log('Received DELETE MCP request');
res.writeHead(405).end(JSON.stringify({
jsonrpc: "2.0",
Expand Down