FastMcp 案例四（Streamable-http）

1、首先安装python环境

conda create -n mcp python=3.10

2、安装依赖

pip install fastmcp

3、编写一个server-sh.py

# -*- coding: utf-8 -*-
# @Time : 2025/7/28 17:10
# @Author : yangwenjie
# @Email : 邮箱
# @File : server-sh.py
# @Project : fastmcp

from fastmcp import FastMCP
from datetime import datetime

mcp = FastMCP()

@mcp.tool
def get_current_time():
    """Get current time"""
    return datetime.now()

@mcp.resource("resource://cities")
def get_cities():
    """返回支持查询天气的城市列表"""
    cities = ["北京", "上海", "广州", "深圳"]
    return f"Cities: {', '.join(cities)}"

@mcp.resource("resource://{city}/weather")
def get_city_weather(city: str) -> str:
    return f"Weather for {city}"

@mcp.tool()
def greet(name: str) -> str:
    """向用户打招呼"""
    return f"Hello, {name}!"

@mcp.prompt
def ask_about_topic(topic: str) -> str:
    """Generates a user message asking for an explanation of a topic."""
    return f"Can you please explain the concept of '{topic}'?"


if __name__ == "__main__":
    mcp.run(transport="streamable-http", host="0.0.0.0", port=3003, path="/mcp")

 

4、运行

python server-sh.py 

╭─ FastMCP 2.0 ──────────────────────────────────────────────────────────────╮
│                                                                            │
│        _ __ ___ ______           __  __  _____________    ____    ____     │
│       _ __ ___ / ____/___ ______/ /_/  |/  / ____/ __ \  |___ \  / __ \    │
│      _ __ ___ / /_  / __ `/ ___/ __/ /|_/ / /   / /_/ /  ___/ / / / / /    │
│     _ __ ___ / __/ / /_/ (__  ) /_/ /  / / /___/ ____/  /  __/_/ /_/ /     │
│    _ __ ___ /_/    \__,_/____/\__/_/  /_/\____/_/      /_____(_)____/      │
│                                                                            │
│                                                                            │
│                                                                            │
│    🖥️  Server name:     FastMCP                                             │
│    📦 Transport:       Streamable-HTTP                                     │
│    🔗 Server URL:      http://0.0.0.0:3003/mcp                             │
│                                                                            │
│    📚 Docs:            https://gofastmcp.com                               │
│    🚀 Deploy:          https://fastmcp.cloud                               │
│                                                                            │
│    🏎️  FastMCP version: 2.10.6                                              │
│    🤝 MCP version:     1.12.2                                              │
│                                                                            │
╰────────────────────────────────────────────────────────────────────────────╯


[07/29/25 10:14:24] INFO     Starting MCP server 'FastMCP' with transport 'streamable-http' on http://0.0.0.0:3003/mcp                                                                                         server.py:1448
INFO:     Started server process [1545763]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://0.0.0.0:3003 (Press CTRL+C to quit)

5、修改端口为3002 ，运行文件

 fastmcp dev server-sh.py 

Starting MCP inspector...
⚙️ Proxy server listening on localhost:6277
🔑 Session token: 1e1e09283bb43d35e11c95e03669efc9e296cf9197620c59d2119db5bd4f2c74
   Use this token to authenticate requests or set DANGEROUSLY_OMIT_AUTH=true to disable auth

🚀 MCP Inspector is up and running at:
   http://localhost:6274/?MCP_PROXY_AUTH_TOKEN=1e1e09283bb43d35e11c95e03669efc9e296cf9197620c59d2119db5bd4f2c74

🌐 Opening browser...
New StreamableHttp connection request
Query parameters: {"url":"http://0.0.0.0:3003/mcp","transportType":"streamable-http"}
Created StreamableHttp server transport
Created StreamableHttp client transport
Client <-> Proxy  sessionId: 3c5d3289-e1b1-45f2-a19f-1bb0728beaf7
Proxy  <-> Server sessionId: 9781d4c316c24277b635ce8e6f6484a7
Received POST message for sessionId 3c5d3289-e1b1-45f2-a19f-1bb0728beaf7
Received GET message for sessionId 3c5d3289-e1b1-45f2-a19f-1bb0728beaf7

6、测试验证