tiny-mcp-server
tiny-mcp-server
在 Python 中构建 Model Context Protocol (MCP) 服务器的最快、最小巧的方式。零依赖。MIT.
tiny-mcp-server 是一个用于构建 Model Context Protocol 服务器的单文件 Python 框架。无外部依赖,无样板代码 —— 只需用 @tool 装饰一个函数,你就在交付一个 MCP 服务器。
功能
🪶 单文件、零依赖 —— 纯 Python 标准库,可放入任何项目
🪄
@tool装饰器 —— 用一行代码将任意函数变为 MCP 工具🚀 多种传输方式 ——
stdio(用于桌面 MCP 客户端)和sse(用于 Web/远程)� 自动生成 JSON Schema —— 类型提示和 docstrings 变成工具 schema
�️ 内置日志和错误处理 —— 永远不会因格式错误的负载而崩溃
�️ MIT 许可 —— 可在任何地方使用
Related MCP server: MCP Starter
安装
选择最方便的方式:
# Option 1 — pip (when published)
pip install tiny-mcp-server
# Option 2 — curl a single file and import it
curl -O https://raw.githubusercontent.com/hussain-alsaibai/tiny-mcp-server/main/tiny_mcp_server.py
# Option 3 — vendor it
cp tiny_mcp_server.py your_project/快速开始
这是一个包含两个工具的完整 MCP 服务器 —— 不到 20 行:
from tiny_mcp_server import Server, tool
app = Server("hello-world")
@app.tool
def add(a: int, b: int) -> int:
"""Add two numbers together."""
return a + b
@app.tool
def greet(name: str = "World") -> str:
"""Greet someone by name."""
return f"Hello, {name}!"
if __name__ == "__main__":
app.run("stdio") # or "sse" for HTTP transportadd 工具自动生成的 JSON Schema:
{
"name": "add",
"description": "Add two numbers together.",
"inputSchema": {
"type": "object",
"properties": {
"a": {"type": "integer"},
"b": {"type": "integer"}
},
"required": ["a", "b"]
}
}传输方式
stdio(默认 —— 用于 Claude Desktop、Cursor 等)
app.run("stdio")服务器从 stdin 读取 JSON-RPC 消息,并将响应写入 stdout。这是每个桌面 MCP 客户端使用的传输方式。
SSE(HTTP —— 用于 Web 客户端)
app.run("sse", host="127.0.0.1", port=8000)在 /sse 暴露一个 Server-Sent Events 端点,并在 /messages 暴露一个 POST 端点。非常适合将 MCP 服务器作为本地微服务运行。
API 参考
Server(name: str)
app = Server("my-server")@app.tool
@app.tool(name="optional-name", description="optional-desc")
def my_tool(arg: str, count: int = 1) -> str:
"""Tool description (used as fallback if description not provided)."""
return arg * countname—— 默认为函数名description—— 默认为函数的 docstring参数从签名中推断;类型来自注解
默认值在 schema 中变为可选
app.run(transport: str, **kwargs)
"stdio"—— 无额外参数"sse"——host(默认127.0.0.1)、port(默认8000)
示例
可运行的演示请参阅 examples/hello_world.py。
许可证
MIT © hussain-alsaibai
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