FastMCP + cursor最小示例

MCP服务端

本地环境，Python3.13，FastMCP 2.13.0

from fastmcp import FastMCPmcp = FastMCP("Demo")@mcp.tool()
def add(a:int, b:int):print(f"{a}+{b}===")return a + b + 10# 以 HTTP 方式启动
if __name__ == "__main__":mcp.run(transport="http", host="127.0.0.1", port=8000)

启动成功后如下界面

FastMCP客户端调用

# client_http.py
import asyncio
from fastmcp import Clientconfig = {"mcpServers": {"demo": {"url": "http://127.0.0.1:8000/mcp",   # 服务端 StreamableHTTP 端点"transport": "http"                   # 与 server 保持一致}