Agent Preflight: OFAC, DNS, Email Auth, Domain, Email & URL

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "ofac-wallet-screen-dns-email-auth-x402": {
      "type": "http",
      "url": "https://sdn-screen-x402.sdnscreen.workers.dev/mcp"
    }
  }
}

6 tools

• ofac_wallet_screen

  Screens a crypto wallet address (EVM, BTC, TRON, SOL, XMR and every other chain OFAC lists) against all Digital Currency Addresses on the US Treasury OFAC SDN list. Returns sanctioned true/false, verdict block/no_match, SDN entity name, sdnType, programs and the list publish…

• dns_lookup

  Resolves live DNS records for any domain or hostname via 1.1.1.1: A, AAAA, CNAME, MX, NS, TXT, SOA and CAA in one call (type=ALL), or a single type incl. SRV, PTR, DS, DNSKEY, HTTPS. Clean JSON with TTLs, NXDOMAIN flag and DNSSEC-authenticated bit. A URL or email address is…

• email_auth_check

  Checks a domain's email authentication: parses SPF (+all, ?all, multiple records, over 10 DNS lookups), DMARC (p, sp, pct, rua), DKIM keys (your selector or 15 common ones) and MX, then returns an A-F grade, 0-100 score and coded issues (spf_missing, dmarc_p_none, ...). Use when…

• whois_domain_age

  Looks up a domain in its registry's RDAP server (the ICANN successor to WHOIS, found via the IANA bootstrap): registration date, age in days/years, newlyRegistered (<30 days), expiry, last change, registrar name + IANA ID, EPP status, nameservers and DNSSEC. No personal contact…

• email_mx_verify

  Checks an email address without sending mail or opening SMTP: syntax, domain exists, MX records (or RFC 5321 A/AAAA fallback), RFC 7505 null MX, MX host resolves, disposable-domain list (~9.9k domains), role account (info@, support@) and free provider. Verdict…

• url_unshorten

  Follows a URL's HTTP redirects hop by hop (max 10, page bodies never read) and returns the final URL, status, the full chain and heuristic safety flags: shortener_used, cross_domain_redirect, https_downgrade, ip_address_host, punycode_host, userinfo_in_url, high_abuse_tld…

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