MCP Server @ Cursor Does not Connect

Bug Reports
1

I am trying to create a greet mcp server and it simply does not work when I try to connect.

cursor version

Version: 0.46.11
VSCode Version: 1.96.2
Commit: ae378be9dc2f5f1a6a1a220c6e25f9f03c8d4e10
Date: 2025-03-07T06:43:50.208Z (1 mo ago)
Electron: 32.2.6
Chromium: 128.0.6613.186
Node.js: 20.18.1
V8: 12.8.374.38-electron.0
OS: Darwin arm64 23.5.0

name: echo
type: command
command: node /Users/luisvalgoi/Development/.../src/index.js

package.json

{
  "name": "echo-mcp",
  "version": "1.0.0",
  "description": "Echo MCP Server Example",
  "type": "module",
  "main": "src/index.js",
  "scripts": {
    "start": "node src/index.js"
  },
  "dependencies": {
    "@modelcontextprotocol/sdk": "1.9.0",
    "zod": "3.22.4"
  }
}

MCP Server

import { McpServer, ResourceTemplate } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";

// Initialize the MCP server
const server = new McpServer({
  name: "Echo",
  version: "1.0.0"
});

server.resource(
  "echo",
  new ResourceTemplate("echo://{message}", { list: undefined }),
  async (uri, { message }) => ({
    contents: [{
      uri: uri.href,
      text: `Resource echo: ${message}`
    }]
  })
);

server.tool(
  "echo",
  { message: z.string() },
  async ({ message }) => ({
    content: [{ type: "text", text: `Tool echo: ${message}` }]
  })
);

// Function to start the server
async function startServer() {
  try {
    // Start the server with stdio transport
    const transport = new StdioServerTransport();
    await server.connect(transport);
  } catch (error) {
    process.stderr.write(`Failed to start server: ${error.message}\n`);
    process.exit(1);
  }
}

// Start the server
startServer();