使用Python FastMCP搭建MCP服务器

先看成果

安装FastMCP

pip install fastmcp

验证安装:
fastmcp version

将会输出：

FastMCP version:                                           2.2.1
MCP version:                                               1.6.0
Python version:                                           3.13.2
Platform:                              Windows-11-10.0.26100-SP0
FastMCP root path: ~/AppData\Local\Programs\Python\Python313\Lib

创建MCP服务器

from fastmcp import FastMCP
import asyncio

mcp = FastMCP(name="My First MCP Server")

@mcp.tool()
def greet(name: str) -> str:
    """Returns a simple greeting."""
    return f"Hello, {name}!"

@mcp.tool()
def add(a: int, b: int) -> int:
    """Adds two numbers together."""
    return a + b

启动MCP服务

D:\temp>fastmcp run mcptest.py:mcp --transport sse
[04/22/25 14:51:31] INFO     Found server "My First MCP Server" in D:\temp\mcptest.py                         cli.py:352
                    INFO     Starting server "My First MCP Server"...                                      server.py:262
INFO:     Started server process [39816]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     127.0.0.1:54998 - "GET /sse HTTP/1.1" 200 OK
INFO:     127.0.0.1:54999 - "GET /sse HTTP/1.1" 200 OK
INFO:     127.0.0.1:55001 - "GET /sse HTTP/1.1" 200 OK
INFO:     127.0.0.1:55020 - "GET /sse HTTP/1.1" 200 OK

--transport：选择通信协议（stdio、sse）。SSE 通常用于基于 Web 的交互。
--port， --host， --log-level：配置传输和日志记录设置。

客户端连接调用

URL填入地址，打开服务

聊天时选择支持工具的模型，选择已添加的mcp服务

参考链接
https://apidog.com/blog/fastmcp/