Everything MCP Server

The Everything MCP Server is a reference implementation that showcases every feature of the Model Context Protocol: tools, resources, prompts, sampling, roots, and logging. Use it as a test harness when developing MCP clients or to learn the full MCP spec.

Installation & Configuration

Add this block to your claude_desktop_config.json (or your agent framework's MCP config file):

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

Config file location:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/claude/claude_desktop_config.json

Available Tools (8)

• echo
• add
• longRunningOperation
• sampleLLM
• getTinyImage
• printEnv
• annotatedMessage
• getResourceReference

Use Cases

• MCP client development — test your client against a full-featured server
• Protocol learning — explore all MCP features in one place
• Integration testing — validate your agent framework handles all MCP capabilities

Source & Documentation