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

dev.workers.sdnscreen.sdn-screen-x402/agent-preflight · v1.3.0

Measured by MCP Station

Last check	Reachable
Checked at	—
Check success 7 / 30 days	—
First-try success 30 days	—
Median response	—
Lookups 30 days	—
Authentication	No auth
MCP version	2025-06-18
Rank score	—
Declared risk	Read-only (all tools declare readOnlyHint)
Capabilities declared	tools
Tool definitions	6 tools · with description 100% · input schema is an object 100% · read/destructive hints 100%

Description written by the publisher, not verified

$0.01/call via x402: OFAC wallet screen, DNS, email auth, domain age, email verify, URL unshorten.

Connect

streamable-http · https://sdn-screen-x402.sdnscreen.workers.dev/mcp

claude mcp add --transport http agent-preflight https://sdn-screen-x402.sdnscreen.workers.dev/mcp

{
  "mcpServers": {
    "agent-preflight": {
      "url": "https://sdn-screen-x402.sdnscreen.workers.dev/mcp"
    }
  }
}

Tools as reported by the server

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 date. Use when an agent
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 reduced to its host. Use
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 an agent must judge
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 data. Use when an age
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 deliverable_domain, risky, undeliverabl
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, credential_keyword_after_r

Website · JSON · Text for agents · Registry updated 2026-10-12