Preventionlabs

Overview

Preventionlabs is a Model Context Protocol server that monitors live websites from the outside, detecting errors, uptime issues, DNS problems, HTTPS misconfigurations, and leaked files. Any MCP-compatible AI assistant can call Preventionlabs tools directly, letting the model decide when to use them during conversations or agent runs.

The server runs locally via the npm package preventionlabs-mcp, which communicates over stdio. You'll need to provide your PREVENTIONLABS_API_KEY through environment variables to authenticate. The latest release is v1.2.0, available from https://preventionlabs.com.au.

Preventionlabs appears under File System on mcp.site and works with all MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain Preventionlabs, claim this listing to verify ownership and keep information up to date.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "preventionlabs": {
      "command": "npx",
      "args": [
        "-y",
        "preventionlabs-mcp"
      ],
      "env": {
        "PREVENTIONLABS_API_KEY": "<preventionlabs-api-key>"
      }
    }
  }
}

Requires PREVENTIONLABS_API_KEY