Mcp Reference Server

io.github.markusvankempen/mcp-reference-server · v1.0.1

Reference MCP server to check, validate and test clients and SEPs. 22 tools, stdio and HTTP.

Source code Set it up

Connect Runs on your machine

Terminal

claude mcp add mcp-reference-server -e MCP_API_KEY=<MCP_API_KEY> -e AUTH_MODE=<AUTH_MODE> -e MCP_USERS=<MCP_USERS> -e RATE_LIMIT=<RATE_LIMIT> -- npx -y [email protected]

claude_desktop_config.json

{
  "mcpServers": {
    "mcp-reference-server": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "MCP_API_KEY": "<MCP_API_KEY>",
        "AUTH_MODE": "<AUTH_MODE>",
        "MCP_USERS": "<MCP_USERS>",
        "RATE_LIMIT": "<RATE_LIMIT>"
      }
    }
  }
}

~/.cursor/mcp.json

{
  "mcpServers": {
    "mcp-reference-server": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "MCP_API_KEY": "<MCP_API_KEY>",
        "AUTH_MODE": "<AUTH_MODE>",
        "MCP_USERS": "<MCP_USERS>",
        "RATE_LIMIT": "<RATE_LIMIT>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "mcp-reference-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "MCP_API_KEY": "<MCP_API_KEY>",
        "AUTH_MODE": "<AUTH_MODE>",
        "MCP_USERS": "<MCP_USERS>",
        "RATE_LIMIT": "<RATE_LIMIT>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

Name	Description
`MCP_API_KEY` Optional, secret	API key for authenticated tool calls. Issue one on /admin → API Keys. Required when AUTH_MODE=write or AUTH_MODE=all.
`AUTH_MODE` Optional	Authentication mode: off (default), write (write+pii tools gated), all (every tool gated).
`MCP_USERS` Optional, secret	Extra username/password users: 'alice:secret:read,write'. Comma-separated, colon-delimited.
`RATE_LIMIT` Optional	Max tool calls per window per caller. Default 60.

Details

Package	`[email protected]` (NPM, stdio)
First published	13 Nov 2026
Last updated	13 Nov 2026
Registry name	`io.github.markusvankempen/mcp-reference-server`

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Live status

Local install

Installed and run on your own machine, so there is no public endpoint to check.

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