RealMarket Site Check

Overview

RealMarket Site Check is a Model Context Protocol server that runs passive security checks on public websites. It validates email authentication protocols including SPF, DKIM, and DMARC, alongside basic security assessments, giving you visibility into a site's authentication posture and security configuration.

The server runs as a remote endpoint at https://tools.realmarketlabs.com/mcp/site-check with no authentication required and nothing to install locally. It's currently at release v2 and maintained by RealMarket Labs.

RealMarket Site Check appears in the Security category on mcp.site and works with Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and other MCP clients. If you maintain this server, claim your listing to verify ownership and keep information current.

Installation

Settings → Connectors → Add custom connector
Name: RealMarket Site Check
URL:  https://tools.realmarketlabs.com/mcp/site-check