MCP Kit

Use npm create, yarn create, or pnpm create to scaffold a new MCP project. The interactive CLI prompts you for project name, type (server or client), transport mode, and optional plugins.

npm create mcp-kit@latest
# or
yarn create mcp-kit@latest
# or
pnpm create mcp-kit@latest

When prompted, select MCP Server to create a server that exposes tools and resources, or MCP Client to create a client that connects to servers. For transport, choose from stdio (local process), Streamable HTTP (RESTful with streaming), or SSE (server-sent events).

After scaffolding, navigate into the project directory and install dependencies. The server project has src/tools/, src/resources/, and src/prompts/ directories ready for your implementations.

cd my-mcp-project
npm install

Open src/tools/ and add your tool implementations. Each tool uses @modelcontextprotocol/sdk and Zod for typed input schemas. The register*.ts pattern keeps individual tools isolated and composable.

// src/tools/registerMyTool.ts
import { z } from 'zod'
import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'

export default function register(server: McpServer) {
  server.registerTool('my-tool', {
    title: 'My Tool',
    description: 'Does something useful',
    inputSchema: { input: z.string() },
  }, async ({ input }) => ({
    content: [{ type: 'text', text: `Result: ${input}` }]
  }))
}

Use npm run dev for stdio mode or npm run dev:web for HTTP/SSE mode. Then point your MCP client at the compiled output or running process.

npm run dev         # stdio mode
npm run dev:web     # HTTP / SSE mode