Dev tools · MCP Steering Group

Set up Everything

Reference test server from the MCP project that exposes every protocol feature, for checking that a client works.

Publisher: MCP Steering Group Official
Run locally: npx -y @modelcontextprotocol/server-everything
Transports: stdio, sse, streamable-http
Authentication: None.
What it can touch: Demo tools only; nothing outside the server changes.
Licence: MIT (existing) / Apache-2.0 (new contributions)
Source: github.com/modelcontextprotocol/servers/tree/main/src/everything
Status: Active

Install

This server runs on your machine as a child process of the client. You need the runtime its command uses, such as Node.js for npx, uv for uvx or Docker, plus any variables listed under Environment.

Claude Code

shell

claude mcp add --scope project everything -- npx -y @modelcontextprotocol/server-everything

Cursor

.cursor/mcp.json

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

Codex

~/.codex/config.toml

[mcp_servers.everything]
command = "npx"
args = ["-y", "@modelcontextprotocol/server-everything"]

Config for other clients →

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Sources

github.com/modelcontextprotocol/servers