1. 使用python完成mcp服務

1.1 準備環境（python安裝fastmcp）

fastmcp官方文檔：https://modelcontextprotocol.io/introduction

uv add fastmcp

1.2 mcp服務端示例代碼

#!/usr/bin/env python 
# coding: utf-8
from mcp.server.fastmcp import FastMCP# name: 是服務器的標識符或名稱，用于區分不同的 MCP 服務器
# instructions:服務器描述，用于日志、文檔和客戶端展示
mcp = FastMCP("mcp_server_demo", "mcp server example", port=8095)@mcp.tool("sum of two numbers", "計算兩數之和")
def add(a: int, b: int) -> int:"""sum of two numbersmcp.tool注冊工具函數add，工具是模型可以調用的功能，由服務器暴露給客戶端或語言模型:param a::param b::return:"""print(f"計算兩數之和a:{a}, b:{b}")return a + bif __name__ == '__main__':# mcp: Model Context Protocol,模型上下文協議# 啟動mcp服務器， transport=stdio(指定通信方式為標準輸入輸出），sse（Server-Sent Events。單向通信，基于HTTP協議的服務器推送技術）mcp.run(transport="sse")

1.3 啟動mcp服務端

# Using the FastMCP CLI
fastmcp run server.py# Or with Python/uv directly
python server.py
uv run python server.py# need node.js to launches a web interface
fastmcp dev server.py

sse方式示例：

(test-uv) (base) pywcc@wcc:~/test_uv$ uv run mcp_demo.py
INFO:     Started server process [15248]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://0.0.0.0:8095 (Press CTRL+C to quit)

2. dify接入

2.1 安裝MCP SSE和Agent 策略（支持 MCP 工具）插件

https://marketplace.dify.ai/plugins/junjiem/mcp_see_agent?language=zh-Hans

https://marketplace.dify.ai/plugins/junjiem/mcp_sse?language=zh-Hans

應用市場：https://marketplace.dify.ai/

下載插件：

離線安裝插件：

2.2 dify agent插件配置mcp:

2.3 mcp服務配置：

# 示例
{"server_name1": {"url": "http://host.docker.internal:8095/sse","headers": {},"timeout": 60,"sse_read_timeout": 300},"server_name2": {"url": "http://host.docker.internal:8095/sse"}
}# 單個mcp server
{"mcp_server_demo":{"url":"http://host.docker.internal:8095/sse","headers": {},"timeout": 60,"sse_read_timeout": 300}}

2.4 添加授權

指令：

你是一個工具助手，支持mcp協議獲取可用工具，并執行工具調用。

2.5 點擊運行

mcp服務端日志：

[05/10/25 18:58:21] INFO     Processing request of type            server.py:534ListToolsRequest                                   
[05/10/25 19:02:26] INFO     Processing request of type            server.py:534ListToolsRequest                                   INFO     Processing request of type            server.py:534CallToolRequest                                    
INFO:     127.0.0.1:33780 - "GET /sse HTTP/1.1" 200 OK
INFO:     127.0.0.1:33788 - "POST /messages/?session_id=dc23ee63234e4e38a85415f65796e608 HTTP/1.1" 202 Accepted
INFO:     127.0.0.1:33788 - "POST /messages/?session_id=dc23ee63234e4e38a85415f65796e608 HTTP/1.1" 202 Accepted
INFO:     127.0.0.1:33788 - "POST /messages/?session_id=dc23ee63234e4e38a85415f65796e608 HTTP/1.1" 202 Accepted
INFO:     127.0.0.1:33788 - "POST /messages/?session_id=dc23ee63234e4e38a85415f65796e608 HTTP/1.1" 202 Accepted
計算兩數之和a:1, b:2

運行結果：