pywss vs everything

Side-by-side comparison to help you pick between these two MCP servers.

	pywss by czasg	everything by modelcontextprotocol
Stars	★ 100	★ 85,748
30d uses	—	—
Score	41	77
Official	—	✓
Categories	Developer ToolsAI / LLM ToolsOps & Infra	Developer ToolsAI / LLM ToolsOther
Language	Python	TypeScript
Last commit	10 mo ago	this month

pywss · Summary

Pywss is a lightweight Python web framework with built-in MCP server capabilities supporting SSE, StreamHTTP and MCPO protocols.

everything · Summary

Official MCP test server exercising all protocol features for client builders.

pywss · Use cases

Building MCP servers with custom tools that need to expose both SSE and HTTP endpoints
Creating AI applications that require structured API documentation for MCP tools
Developing systems that need to handle high-volume concurrent MCP requests efficiently

everything · Use cases

Testing MCP client implementations against all protocol features
Learning MCP protocol capabilities through a reference server
Validating client compatibility with different transport methods

pywss · Install

Installation

pip install pywss

Setting up an MCP server

from pywss import App
from pywss.mcp import MCPServer
from pydantic import BaseModel

class MyRequest(BaseModel):
    param: str

class MyMCPServer(MCPServer):
    @pywss.openapi.docs(description="My tool", request=MyRequest)
    def tool_my_tool(self, ctx):
        req = ctx.data.req
        self.handle_success(ctx, {"result": req.param})

app = App()
server = MyMCPServer()
server.mount(app.group("/mcp"))
app.run()

everything · Install

NPX (recommended)

{
  "mcpServers": {
    "everything": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-everything"]
    }
  }
}

On Windows, use cmd /c:

{
  "mcpServers": {
    "everything": {
      "command": "cmd",
      "args": ["/c", "npx", "-y", "@modelcontextprotocol/server-everything"]
    }
  }
}

Docker

{
  "mcpServers": {
    "everything": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "mcp/everything"]
    }
  }
}

Global install

npm install -g @modelcontextprotocol/server-everything@latest
npx @modelcontextprotocol/server-everything

Comparison generated from public README + GitHub signals. Last updated automatically.