mcp-debug vs everything

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

	mcp-debug by giantswarm	everything by modelcontextprotocol
Stars	★ 37	★ 85,748
30d uses	—	—
Score	46	77
Official	—	✓
Categories	Developer ToolsAI / LLM ToolsSecurity	Developer ToolsAI / LLM ToolsOther
Language	Go	TypeScript
Last commit	this month	this month

mcp-debug · Summary

A command-line tool for debugging MCP servers with OAuth 2.1 authentication, interactive REPL, and server mode.

everything · Summary

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

mcp-debug · Use cases

Debugging tool integrations in MCP servers by inspecting capabilities and testing tool calls
Testing MCP server notifications and responses with detailed JSON-RPC logging
Authenticating to OAuth-protected MCP servers with automatic discovery and PKCE validation

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

mcp-debug · Install

Installation

From Source

go install github.com/giantswarm/mcp-debug@latest

Usage

# Connect to an MCP server
./mcp-debug --endpoint http://localhost:8090/mcp

# Start interactive REPL
./mcp-debug --repl

# Run as MCP server
./mcp-debug --mcp-server

# OAuth authentication
./mcp-debug --oauth --endpoint https://mcp.example.com/mcp

Claude Desktop Integration

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "mcp-debug": {
      "command": "mcp-debug",
      "args": ["--mcp-server"]
    }
  }
}

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.