MCP Defender

Name: MCP Defender
Author: MCP Defender Team

MCP Defender Team

Desktop app that automatically scans and blocks malicious MCP traffic in AI apps like Cursor, Claude, VS Code and Windsurf.

Setup

Choose your client, copy the config, then fill in any required environment variables.

claude mcp add defender -- npm start

~/.codex/config.toml

[mcp_servers.defender]
command = "npm"
args = ["start"]

# codex mcp add defender -- npm start

~/.cursor/mcp.json

{
  "mcpServers": {
    "defender": {
      "command": "npm",
      "args": [
        "start"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "defender": {
      "type": "stdio",
      "command": "npm",
      "args": [
        "start"
      ]
    }
  }
}

~/.gemini/settings.json

{
  "mcpServers": {
    "defender": {
      "command": "npm",
      "args": [
        "start"
      ]
    }
  }
}

claude_desktop_config.json

{
  "mcpServers": {
    "defender": {
      "command": "npm",
      "args": [
        "start"
      ]
    }
  }
}

.trae/mcp.json

{
  "mcpServers": {
    "defender": {
      "command": "npm",
      "args": [
        "start"
      ]
    }
  }
}