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mcp-server-template

by w0odst0ck

MCP Server Template

A general MCP Server scaffold — FastAPI + FastMCP integration template.

What This Is

A clean starting point for quickly building MCP (Model Context Protocol) services.

MCP is the protocol standard for AI models to call external tools. This template lets you expose any functionality as an AI-callable tool with minimal configuration.

你的业务代码 → MCP Server → AI 智能体(Cursor / Claude / 自定义应用)

Related MCP server: Simple Remote MCP Server

Architecture

FastAPI(主容器)
├── CORS 中间件
├── 生命周期管理
├── FastAPI 路由(传统 HTTP)
└── FastMCP 子应用(MCP 协议)
    └── @mcp.tool() 工具

Core features:

  • One decorator = supports both MCP protocol + HTTP interface

  • Multiple modules mounted independently, each module does not interfere with the others

  • Out-of-the-box logging, configuration, Docker deployment

Quick Start

Prerequisites

  • Python >= 3.12

  • uv

Installation

# 克隆模板
git clone <your-repo-url> my-mcp-server
cd my-mcp-server

# 安装依赖
uv sync

# 配置环境变量
cp .env-sample .env

Start

# 方式一:uvicorn(推荐)
uv run uvicorn app.main:app --reload

# 方式二:python
uv run python -m app.main

# 方式三:fastapi CLI
uv run fastapi dev app/main.py

Verification

# HTTP 端点
curl http://127.0.0.1:8000/example/hello
# => "Hello, World! Running mcp-server-template v0.1.0"

# MCP 协议端点(返回 MCP 端点信息,非 404 即挂载成功)
curl http://127.0.0.1:8000/example

Project Structure

mcp-server-template/
│
├── app/                    # 应用主目录
│   ├── routers/            # MCP 工具 + FastAPI 路由
│   │   ├── example.py      #   示例模块(供复制参考)
│   │   └── __init__.py
│   ├── utils/              # 工具函数
│   │   └── log.py          #   日志(loguru)
│   ├── __init__.py
│   ├── config.py           # 配置管理(pydantic-settings)
│   ├── dependencies.py     # 依赖注入
│   └── main.py             # 应用入口
│
├── docs/                   # 文档
├── migrations/             # Alembic 数据库迁移(可选)
├── scripts/                # 开发脚本
├── tests/                  # 测试
│
├── .env-sample             # 环境变量模板
├── .gitignore
├── .python-version
├── alembic.ini
├── docker-compose.yaml
├── Dockerfile
├── pyproject.toml
└── README.md

Adding New Business Modules

The template includes example.py as a reference. To create a new module:

  1. Copy app/routers/example.py to app/routers/your_module.py

  2. Modify the module content — rename it, change the route prefix, write your tool functions

  3. Register it in app/main.py

# app/main.py
from app.routers import your_module
from fastmcp.utilities.lifespan import combine_lifespans

your_module_app = your_module.mcp.http_app(path="/", stateless_http=True)
app.include_router(your_module.router)
app.mount("/your_module", app=your_module_app)

# 同时把 your_module_app.lifespan 合并进 FastAPI 的 lifespan:
# app = FastAPI(lifespan=combine_lifespans(lifespan, your_module_app.lifespan))

Tool functions can be called by both AI (via MCP) and browsers (via HTTP):

@mcp.tool()
@router.get("/search")
async def search(query: str) -> list:
    """搜索知识库(此描述会暴露给 AI)"""
    # 你的业务逻辑
    return results

Testing

uv run pytest tests/ -v

Docker Deployment

# 构建
docker build -t mcp-server:latest .

# 启动
docker compose up -d

Configuration

All configuration is managed through environment variables or a .env file. See .env-sample for details.

Key configuration items:

Variable

Description

Default

ENVIRONMENT

Runtime environment

dev

HOST

Listen address

127.0.0.1

PORT

Listen port

8000

DATABASE_URL

Database connection (optional)

None

LOG_LEVEL

Log level

INFO

References

F
license - not found
Not graded
quality - not tested
B
maintenance

Maintenance

Maintainers
Response time
Release cycle
Releases (12mo)
Commit activity

Resources

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Related MCP Servers

  • F
    license
    B
    quality
    D
    maintenance
    A template and demonstration project for building, testing, and deploying remote MCP servers using FastMCP and uv. It provides a foundational structure for creating MCP-compliant tools that can be hosted publicly and integrated with LLM agents.
    2
  • A
    license
    Not graded
    quality
    D
    maintenance
    A bare-bones FastMCP server template designed to serve as a starting point for building custom Model Context Protocol servers. It provides a foundational structure for implementing tools over HTTP and includes a built-in health check utility.
    GPL 3.0

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