x402 Domain Lookup & DNS Email Auth

dev.workers.microtools-x402.x402-dns-auth-checker/dns-auth-checkerVersion 0.3.0

Domain lookup (DNS records + RDAP registrar/age/expiry), bulk, and SPF/DKIM/DMARC audit via x402.

Status

Responds762 msNov 14, 2026, 14:28 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:28 UTC
Latency: 762 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://x402-dns-auth-checker.microtools-x402.workers.dev/mcpResponds762 msNov 14, 2026, 14:28 UTC

No sign-in

Claude Code

claude mcp add --transport http dns-auth-checker https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: dns-auth-checker
Remote MCP server URL: https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp

Cursor

{
  "mcpServers": {
    "dns-auth-checker": {
      "url": "https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"dns-auth-checker","type":"http","url":"https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp"}'

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Tools

4 tools

Tools of x402 Domain Lookup & DNS Email Auth
	Description		Read-only	Idempotent	Open world
`domain_auth_check`Audit a domain's email authentication DNS: SPF (record count, all qualifier, includes, ~DNS lookups vs 10 limit), DMARC (p, sp, pct, rua/ruf, adkim/aspf), DKIM (common or given selectors, key type and length), MX, plus BIMI / MTA-STS / TLS-RPT presence. Returns per-check status, issues, recommendations, score 0-100 and grade A-F. Costs $0.003 USDC per call via x402.	Audit a domain's email authentication DNS: SPF (record count, all qualifier, includes, ~DNS lookups vs 10 limit), DMARC (p, sp, pct, rua/ruf, adkim/aspf), DKIM (common or given selectors, key type and length), MX, plus BIMI / MTA-STS / TLS-RPT presence. Returns per-check status, issues, recommendations, score 0-100 and grade A-F. Costs $0.003 USDC per call via x402.	Not declared	Not declared	Not declared	Not declared
`domain_lookup`Domain lookup: DNS records (A, AAAA, MX, NS, TXT, CNAME, SOA, CAA via Cloudflare DNS-over-HTTPS, DNSSEC AD flag) plus registration data from the registry's RDAP server (IANA bootstrap): registrar + IANA id, created / updated / expiry dates, age in days, days to expiry, EPP status, nameservers, DNSSEC delegation, registrar abuse contact. No registrant personal data. Charged only when DNS answered (NOERROR) or the registry RDAP returned the registration. TLDs without RDAP (e.g. .de, .io) still succeed with DNS records and rdap_available:false. NXDOMAIN with no registration (404 DOMAIN_NOT_FOUND), upstream failure (502) and bad input (400) are not charged. Costs $0.003 USDC per call via x402.	Domain lookup: DNS records (A, AAAA, MX, NS, TXT, CNAME, SOA, CAA via Cloudflare DNS-over-HTTPS, DNSSEC AD flag) plus registration data from the registry's RDAP server (IANA bootstrap): registrar + IANA id, created / updated / expiry dates, age in days, days to expiry, EPP status, nameservers, DNSSEC delegation, registrar abuse contact. No registrant personal data. Charged only when DNS answered (NOERROR) or the registry RDAP returned the registration. TLDs without RDAP (e.g. .de, .io) still succeed with DNS records and rdap_available:false. NXDOMAIN with no registration (404 DOMAIN_NOT_FOUND), upstream failure (502) and bad input (400) are not charged. Costs $0.003 USDC per call via x402.	Not declared	Not declared	Not declared	Not declared
`domain_lookup_bulk`Bulk domain lookup: the same DNS + RDAP registration report as domain_lookup for up to 10 domains in one call (deduplicated). Per-domain errors are returned inline. Charged once ($0.01 USDC via x402) only if at least one domain succeeded; otherwise not charged.	Bulk domain lookup: the same DNS + RDAP registration report as domain_lookup for up to 10 domains in one call (deduplicated). Per-domain errors are returned inline. Charged once ($0.01 USDC via x402) only if at least one domain succeeded; otherwise not charged.	Not declared	Not declared	Not declared	Not declared
`health`Free health check. Returns service status, price and network.	Free health check. Returns service status, price and network.	Not declared	Not declared	Not declared	Not declared

Details

Registry status: Active
Published: Nov 3, 2026
Updated: Nov 3, 2026
Website: https://x402-dns-auth-checker.microtools-x402.workers.dev/⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): SecuritySuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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