npm install
npm run dev          # Run the MCP server (Streamable HTTP on port 3000)
npm run inspect      # Test in MCP Inspector

tc_mcp_III/
├── src/
│   ├── index.ts              # Entry point: Express + Streamable HTTP transport
│   ├── server.ts             # MCP server factory (createMCPServer)
│   ├── entities/
│   │   ├── user.entity.ts    # Zod schemas and types for users
│   │   └── todo.entity.ts    # Zod schemas and types for todos
│   ├── users/
│   │   └── userHandler.ts    # Business logic: create, fetch users
│   ├── tools/
│   │   └── users/
│   │       ├── createUserTool.ts   # MCP tool: create-user
│   │       └── fetchUsersTool.ts   # MCP tool: fetch-users
│   ├── resources/
│   │   ├── users/
│   │   │   └── usersResources.ts   # MCP resource: users (read-only)
│   │   └── todo/
│   │       ├── todoResources.ts   # MCP resources: todos, single-todo (template)
│   │       └── todoHandler.ts     # Fetches todos from dummyjson.com
│   └── prompts/
│       └── todos/
│           └── todosPrompts.ts    # MCP prompt: fetch-todo-item
├── users.json                # JSON "database" for users
├── .cursor/
│   └── mcp.json              # Cursor MCP configuration
├── package.json
└── tsconfig.json

// src/index.ts (simplified)
function getServer() {
    const server = createMCPServer();
    registerCreateUserTool(server);
    registerFetchUserTool(server);
    registerAllUsersResource(server);
    registerAllTodoResources(server);
    registerSingleTodoResource(server);
    registerFetchPrompt(server);
    return server;
}

app.all('/mcp', async (req, res) => {
    const server = getServer();
    const transport = new StreamableHTTPServerTransport();
    await server.connect(transport);
    await transport.handleRequest(req, res, req.body ?? {});
    res.on('close', () => {
        server.close();
        transport.close();
    });
});

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";

export function createMCPServer() {
    return new McpServer(
        { name: 'emi_mcp_server', version: '1.0.0' },
        {
            capabilities: {
                tools: {},
                prompts: {},
                resources: {},
                tasks: {}
            }
        }
    );
}

import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';

export function registerFetchUserTool(server: McpServer) {
    server.registerTool(
        'fetch-users',
        { title: '...', description: '...', inputSchema: fetchUserSchema },
        async (userSearch) => ({ content: [{ type: 'text', text: JSON.stringify(foundUsers) }] })
    );
}

{
  "mcpServers": {
    "tc_mcp_iii": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "http://localhost:3000/mcp"],
      "cwd": "C:\\code\\MCP\\tc_mcp_III"
    }
  }
}

{
  "mcpServers": {
    "tc_mcp_iii": {
      "url": "http://localhost:3000/mcp"
    }
  }
}

{
  "mcpServers": {
    "tc_mcp_iii": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://YOUR-SERVICE.run.app/mcp"]
    }
  }
}