Lookproof DNS and mail security checks

io.github.lookproof/lookproof-mcp

SPF, DKIM, DMARC, MTA-STS, DNSSEC, TLS and DNS checks for domains, paid per call in USDC (x402)

Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "lookproof-mcp": {
      "command": "uvx",
      "args": [
        "lookproof-mcp"
      ],
      "env": {
        "PRIVATE_KEY": "<your PRIVATE_KEY>",
        "MAX_SPEND_USD": "0.10"
      }
    }
  }
}
Environment variables
  • PRIVATE_KEYsecretPrivate key of a dedicated wallet (alternative to PRIVATE_KEY_FILE)
  • MAX_SPEND_USDSpending cap per session (one server process) in USD

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.1.0
Registry
active
Published
11/5/2026
Browse all Developer Tools →

Add the badge to your site

Show visitors that Lookproof DNS and mail security checks is listed here — it’s also the link we check for a free listing.

Lookproof DNS and mail security checks — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/io-github-lookproof-lookproof-mcp?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="Lookproof DNS and mail security checks — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![Lookproof DNS and mail security checks — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-lookproof-lookproof-mcp?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.