Test FastMCP
A basic MCP server built with the FastMCP framework that provides fundamental mathematical operations like addition, subtraction, multiplication, and division. It serves as a demonstration for integrating math-based tools into MCP-compatible environments like Cursor IDE.
README
Test FastMCP
一个使用 FastMCP 框架构建的 MCP 服务器,提供基本的数学运算功能。
🚀 功能特性
- 加法运算 (
add) - 计算两个整数的和 - 减法运算 (
subtract) - 计算两个整数的差 - 乘法运算 (
multiply) - 计算两个整数的积 - 除法运算 (
divide) - 计算两个整数的商
📋 系统要求
- Python 3.12+
- uv 包管理器
- Cursor IDE (用于MCP集成)
🛠️ 安装和设置
1. 安装 uv
如果你还没有安装 uv,请先安装:
# macOS/Linux
curl -LsSf https://astral.sh/uv/install.sh | sh
# 或者使用 pip
pip install uv
2. 项目设置
-
克隆项目:
git clone <repository-url> cd test_fast_mcp -
安装依赖:
uv sync -
激活虚拟环境:
uv shell -
运行服务器:
uv run python main.py
🔧 开发命令
-
启动开发服务器:
uv run dev -
运行测试:
uv run test -
代码格式化:
uv run format -
代码检查:
uv run lint -
导入排序:
uv run sort
添加新依赖
# 添加生产依赖
uv add package-name
# 添加开发依赖
uv add --dev package-name
更新依赖
uv lock --upgrade
🔌 Cursor 集成
配置 MCP 服务器

将以下配置添加到你的 Cursor MCP 配置文件 (~/.cursor/mcp.json) 中:
{
"mcpServers": {
"test-fast-mcp": {
"command": "uv",
"args": ["run", "python", "/Users/guosong/Desktop/Sina/Code/test_fast_mcp/main.py"],
"env": {
"PYTHONPATH": ".",
"TRANSPORT": "stdio"
}
}
}
}
重要配置说明:
- 使用绝对路径指向
main.py文件 - 添加
"TRANSPORT": "stdio"环境变量 - 确保
PYTHONPATH设置正确
验证集成
- 重启 Cursor IDE
- 检查 MCP 服务器状态(应该显示 "4 tools enabled")
- 测试工具调用
📁 项目结构
test_fast_mcp/
├── main.py # 主服务器文件,包含所有工具定义
├── pyproject.toml # 项目配置和依赖管理
├── uv.lock # 依赖锁定文件
├── mcp.json # Cursor MCP 配置示例
├── test_tools.py # 工具测试文件
└── README.md # 项目说明文档
🧪 测试工具
运行测试脚本来验证数学函数:
python test_tools.py
预期输出:
Testing math functions:
add(5, 4) = 9
subtract(10, 3) = 7
multiply(6, 7) = 42
divide(15, 3) = 5.0
🔍 故障排除
常见问题
-
"No tools or prompts" 错误
- 确保使用绝对路径配置
- 添加
TRANSPORT: "stdio"环境变量 - 重启 Cursor IDE
-
构建错误
- 运行
uv sync重新安装依赖 - 检查
pyproject.toml配置
- 运行
-
工具无法调用
- 确认 MCP 服务器正在运行
- 检查工具名称格式:
mcp_test-fast-mcp_<tool_name>
调试步骤
-
检查服务器状态:
ps aux | grep "python main.py" -
查看服务器日志:
uv run python main.py -
测试工具功能:
python -c "from main import add; print(add(5, 4))"
🏗️ 开发指南
这个项目使用 FastMCP 框架,它简化了 MCP 服务器的创建过程。
添加新工具
- 在
main.py中定义新函数 - 使用
@mcp.tool装饰器 - 添加详细的文档字符串
- 重启服务器
示例:
@mcp.tool
def new_tool(param: str) -> str:
"""Tool description.
Args:
param: Parameter description
Returns:
Return value description
"""
return f"Processed: {param}"
工具命名规范
- 使用小写字母和下划线
- 提供清晰的参数类型注解
- 包含详细的文档字符串
- 添加适当的错误处理
📄 许可证
MIT License
🤝 贡献
欢迎提交 Issue 和 Pull Request!
📞 支持
如果遇到问题,请:
- 检查故障排除部分
- 查看项目 Issues
- 提交新的 Issue
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