Merge pull request #1 from shivdeepak/fix-streamable-endpoint

fix cors issue with accessing mcp-session-id header

server/src/index.ts

@@ -39,6 +39,10 @@ const { values } = parseArgs({
 
 const app = express();
 app.use(cors());
+app.use((req, res, next) => {
+  res.header("Access-Control-Expose-Headers", "mcp-session-id");
+  next();
+});
 
 const webAppTransports: Map<string, Transport> = new Map<string, Transport>(); // Transports by sessionId