Calculator MCP
Provides mathematical computation capabilities including basic arithmetic operations (add, subtract, multiply, divide), advanced functions (square root, factorial, logarithm), and trigonometric functions (sin, cos, tan) through the Model Context Protocol.
README
Calculator MCP
一个简单而强大的计算器 MCP 服务器,通过 Model Context Protocol 提供数学运算功能。
功能特性
- ➕ 基本运算: 加、减、乘、除、幂、取模
- 🔢 高级数学: 平方根、阶乘、对数
- 📐 三角函数: sin、cos、tan
- 🚀 零依赖: 仅使用 Python 标准库
- 📡 stdio 模式: 兼容 supergateway 和 Claude Desktop
快速开始
使用 uvx (推荐)
uvx bachai-calculator-mcp
使用 pip 安装
pip install bachai-calculator-mcp
bachai-calculator-mcp
直接运行
python main.py
MCP 工具列表
1. calculate
基本数学运算
参数:
operation: 运算类型(add, subtract, multiply, divide, power, modulo)a: 第一个数字b: 第二个数字
示例:
{
"name": "calculate",
"arguments": {
"operation": "add",
"a": 10,
"b": 5
}
}
返回: 10 + 5 = 15
2. sqrt
计算平方根
参数:
number: 要计算平方根的数字
示例:
{
"name": "sqrt",
"arguments": {
"number": 16
}
}
返回: √16 = 4.0
3. factorial
计算阶乘
参数:
number: 要计算阶乘的整数
示例:
{
"name": "factorial",
"arguments": {
"number": 5
}
}
返回: 5! = 120
4. trigonometry
三角函数计算
参数:
function: 三角函数类型(sin, cos, tan)angle: 角度(度数)
示例:
{
"name": "trigonometry",
"arguments": {
"function": "sin",
"angle": 30
}
}
返回: sin(30°) = 0.5
5. logarithm
对数计算
参数:
number: 真数base: 底数(可选,默认为 e)
示例:
{
"name": "logarithm",
"arguments": {
"number": 100,
"base": 10
}
}
返回: log_10(100) = 2.0
配置
Supergateway 配置
{
"mcpServers": {
"calculator": {
"outputTransport": "sse",
"port": 8000,
"stdio": "uvx bachai-calculator-mcp",
"ssePath": "/sse",
"messagePath": "/message"
}
}
}
Claude Desktop 配置
Windows: %APPDATA%\Claude\claude_desktop_config.json
{
"mcpServers": {
"calculator": {
"command": "uvx",
"args": ["bachai-calculator-mcp"]
}
}
}
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"calculator": {
"command": "uvx",
"args": ["bachai-calculator-mcp"]
}
}
}
使用示例
在 Claude Desktop 中使用
安装并配置后,您可以向 Claude 发送类似的请求:
- "请帮我计算 123 + 456"
- "计算 25 的平方根"
- "5 的阶乘是多少?"
- "计算 sin(45度)"
- "计算以 2 为底 8 的对数"
手动测试
# 测试初始化
echo '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}' | uvx bachai-calculator-mcp
# 测试加法
echo '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"calculate","arguments":{"operation":"add","a":10,"b":5}}}' | uvx bachai-calculator-mcp
技术特点
- 零依赖: 仅使用 Python 标准库(math, operator, json)
- 轻量级: 代码简洁,启动快速
- 可靠: 完整的错误处理和边界检查
- 兼容性: 支持 Python 3.7+
- 标准化: 完全遵循 MCP 协议规范
错误处理
服务器包含完善的错误处理:
- ✅ 除零检查
- ✅ 负数平方根检查
- ✅ 阶乘范围验证
- ✅ 对数参数验证
- ✅ JSON 解析错误处理
开发
# 克隆仓库
git clone https://github.com/BACH-AI-Tools/calculator-mcp.git
cd calculator-mcp
# 本地测试
python main.py
# 构建包
python -m build
# 发布到 PyPI
python -m twine upload dist/*
许可证
MIT License - 详见 LICENSE 文件
贡献
欢迎提交 Issue 和 Pull Request!
更新日志
v1.0.0 (2024-11-07)
- 🎉 初始发布
- ✨ 支持基本数学运算
- ✨ 支持高级数学函数
- ✨ 支持三角函数
- ✨ 零依赖实现
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