mcp-builder

name	mcp-builder
description	构建 MCP Server — 使用 FastMCP (Python) 或 SDK (Node.js) 创建、测试、发布 MCP 服务器

MCP Builder — 构建 MCP 服务器

创建自定义 MCP (Model Context Protocol) 服务器。

支持的框架

框架	模板命令
Python FastMCP	pip install mcp → python -c "from mcp.server.fastmcp import FastMCP"
Node.js SDK	npm install @modelcontextprotocol/sdk

快速模板

Python FastMCP

from mcp.server.fastmcp import FastMCP
mcp = FastMCP("my-server")

@mcp.tool()
def my_tool(param: str) -> str:
    """工具描述"""
    return f"处理: {param}"

@mcp.resource("config://app")
def get_config() -> str:
    return "应用配置"

if __name__ == "__main__":
    mcp.run(transport="stdio")

Node.js SDK

import { Server } from "@modelcontextprotocol/sdk/server/index.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";

const server = new Server({ name: "my-server", version: "1.0.0" }, {
  capabilities: { tools: {} }
});

server.setRequestHandler(ListToolsRequestSchema, async () => ({
  tools: [{ name: "my_tool", description: "...", inputSchema: { type: "object", properties: {} } }]
}));

server.setRequestHandler(CallToolRequestSchema, async (request) => {
  return { content: [{ type: "text", text: "结果" }] };
});

const transport = new StdioServerTransport();
await server.connect(transport);

传输方式

方式	适用场景
stdio	本地子进程，直接运行
SSE	远程 HTTP 连接
Streamable HTTP	MCP 规范新版，支持流式响应

发布

# npm 发布
npm publish

# PyPI 发布
python -m build && twine upload dist/*

测试

# 本地测试 stdio
node -e "const io = require('child_process').spawn('node', ['server.js']); io.stdout.on('data', d => console.log(d.toString()));"

# 使用 MCP Inspector
npx @modelcontextprotocol/inspector node server.js