MCP Catalogs
Home

everything vs mcpo

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

everything
by modelcontextprotocol
mcpo
by open-webui
Stars★ 85,748★ 4,197
30d uses
Score7758
Official
Categories
Developer ToolsAI / LLM ToolsOther
Developer ToolsAI / LLM ToolsOther
LanguageTypeScriptPython
Last committhis month3 mo ago

everything · Summary

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

mcpo · Summary

A proxy server that exposes MCP tools as OpenAPI-compatible HTTP endpoints for seamless integration with LLM agents.

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

mcpo · Use cases

  • Integrating MCP tools with Open WebUI and other LLM frontends expecting OpenAPI
  • Securing MCP servers by adding authentication and documentation through standard HTTP interfaces
  • Enabling legacy systems and web applications to consume MCP tools without protocol changes

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

mcpo · Install

Installation

# Using uv (recommended)
uvx mcpo --port 8000 --api-key "top-secret" -- your_mcp_server_command

# Using pip
pip install mcpo
mcpo --port 8000 --api-key "top-secret" -- your_mcp_server_command

Docker

docker run -p 8000:8000 ghcr.io/open-webui/mcpo:main --api-key "top-secret" -- your_mcp_server_command

Claude Desktop Configuration

{
  "mcpServers": {
    "mcpo-proxy": {
      "command": "uvx",
      "args": ["mcpo", "--port", "8000", "--api-key", "top-secret", "--", "your_mcp_server_command"]
    }
  }
}
Comparison generated from public README + GitHub signals. Last updated automatically.