pywss

作者 czasg已验证

一个轻量级的 Python Web 框架,一站式集成 MCP SSE、StreamHTTP 和 MCPO 协议,助你轻松构建MCP Server🔥

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Python
语言
2026/8/24
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⚠️ 第三方软件声明

本 Skill 为第三方开源软件,独立托管于 GitHub。SkillTip 仅为信息目录,不控制或维护底层仓库。所显示的安全检查为自动化且范围有限,安装前请自行审查源码。

阅读服务条款

安装

添加到你的 Claude Code skills 目录:

# Add to your Claude Code skills
git clone https://github.com/czasg/pywss

快速入门

使用 pywss 等 Skills 的指南。

安全报告

已验证

上次扫描:—

{
  "status": "PASSED",
  "issues": []
}

README.md

pywss


Project status PyPI Codecov GitHub issues GitHub issues GitHub license


Pywss 简介

Pywss(发音 /piːwaɪz/,类似 p~whys)是一个轻量级的 Python Web 框架,它基于 Python3.6+ 特性构建。

与 Flask、Django 等主流框架不同的是,Pywss 的底层并没有实现 WSGI 接口协议。 其编程风格也更类似于 Gin、Iris 等框架,因此对于熟悉这些框架的开发者来说,Pywss 是一个非常值得探索的项目。

其关键特性有:

  • 简单:拒绝海量参数,减少心智负担。了解上下文 pywss.Context 即刻启程。
  • 快速:引入线程池机制,减少并发场景下线程创建/销毁开销。
  • 优雅ctx.next 真的太优雅了。如果你也和我一样喜欢,那我觉得这件事情,泰裤辣!!
  • 标准化:集成了部分 OpenAPI(Swagger)能力,方便开发者快速生成 API 文档并进行调试。
  • 支持WebSocket:开箱即用的 WebSocket 能力。
  • 接口测试:开箱即用的 API 测试模块,不启动服务也能测试接口功能辣!
  • MCP PRO:一站式集成 SSE、StreamHTTP 和 MCPO 协议,助你轻松构建多 MCP 工具🔥

在线文档 https://czasg.github.io/pywss/


快速开始

1、安装 pywss

pip3 install pywss

2、搭建 web 应用

首先创建 main.py 文件,并写入以下代码:

import time
import pywss

def log_handler(ctx: pywss.Context):
    start_time = time.time()
    ctx.next()
    print(
        f"Route: {ctx.route}, "
        f"Method: {ctx.method}, "
        f"Status: {ctx.response_status_code}, "
        f"Time: {time.time() - start_time:.3f}s"
    )

def handler(ctx: pywss.Context):
  ctx.write("hello~")

def main():
    app = pywss.App()
    app.get("/hello", handler)  # curl localhost:8080/hello
    app.any("*", log_handler, handler)  # curl -X POST localhost:8080/hello
    app.run()

if __name__ == '__main__':
    main()

接着启动服务:

python3 main.py

至此,一个简单的 web 应用服务就完成了。

3、搭建 MCP 应用

要快速构建 MCP 服务,只需继承 pywss.mcp.MCPServer 并遵循以下规则:

核心约束:

  • 所有接口方法必须以 tool_ 开头(如 tool_query_user
  • 必须使用 @pywss.openapi.docs 声明请求参数,且 request 必须从 pydantic.BaseModel 继承(自动生成 OpenAPI 文档)

请求处理:

  • 通过 ctx.data.req 直接获取结构化请求体
  • 使用 self.handle_success(ctx, data) 返回成功响应
  • 使用 self.handle_error(ctx, code, message) 返回标准错误
# coding: utf-8
import pywss
from pydantic import BaseModel
from pywss.mcp import MCPServer

class DomainReq(BaseModel):  # 定义 DomainReq 请求,必须从 pydantic.BaseModel 继承
    domain: str

class DomainMCPServer(MCPServer):  # 定义 DomainMCPServer 服务,必须从 pywss.mcp.MCPServer 继承
    @pywss.openapi.docs(description="获取单个域名服务", request=DomainReq)  # required,工具及其参数说明
    def tool_get_domain(self, ctx: pywss.Context):
        req: DomainReq = ctx.data.req  # 框架已经封装好了请求,可以从 ctx.data.req 直接获取使用,异常请求会被拦截
        self.handle_success(ctx, {  # handle_success 封装了 jsonrpc2.0 输出规范
            "domain": req.domain,
            "color": req.color
        })

class LogReq(BaseModel):
    traceId: str

class LogMCPServer(MCPServer):
    @pywss.openapi.docs(description="获取单个trace日志", request=LogReq)
    def tool_get_trace_log(self, ctx: pywss.Context):
        req: LogReq = ctx.data.req
        self.handle_success(ctx, {
            "traceId": req.traceId,
        })

domainMCPServer = DomainMCPServer()
logMCPServer = LogMCPServer()

app = pywss.App()
app.openapi()  # 开启 OpenAPI 文档
domainMCPServer.mount(app.group("/api/v1/domain"))  # 挂载 MCP 服务,同时指定路由
logMCPServer.mount(app.group("/api/v1/log"))  # 挂载 MCP 服务,同时指定路由
app.run()

接着启动服务:

python3 main.py
协议类型服务类请求方法端点路径格式示例路径
SSEdomainMCPServerGET/api/v1/domain/sseGET /api/v1/domain/sse
logMCPServerGET/api/v1/log/sseGET /api/v1/log/sse
StreamHTTPdomainMCPServerPOST/api/v1/domain/mcpPOST /api/v1/domain/mcp
logMCPServerPOST/api/v1/log/mcpPOST /api/v1/log/mcp
MCPOdomainMCPServerPOST/api/v1/domain/tools/{tool_name}POST /api/v1/domain/tools/get_domain
logMCPServerPOST/api/v1/log/tools/{tool_name}POST /api/v1/log/tools/get_trace_log

更多功能见在线文档


Activity

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常见问题

What is pywss?

pywss is an open-source mcp servers skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by czasg. 一个轻量级的 Python Web 框架,一站式集成 MCP SSE、StreamHTTP 和 MCPO 协议,助你轻松构建MCP Server🔥. It has 100 GitHub stars.

Is pywss safe to use?

Yes. pywss passed SkillsLLM's automated security scan — a dependency vulnerability audit plus prompt-injection heuristics — with no high-severity issues. You can read the full report in the Security Report section on this page.

How do I install pywss?

Clone the repository with "git clone https://github.com/czasg/pywss" and add it to your Claude Code skills directory (see the Installation section above).

What programming language is pywss written in?

pywss is primarily written in Python. It is open-source under czasg on GitHub, so you can review or fork the full source.

Are there alternatives to pywss?

Yes. SkillsLLM lists many other MCP Servers skills you can browse and compare side by side. Open the MCP Servers category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh pywss against similar tools.

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