What are reliable alternatives to x402 DNS Email Auth Checker?

Measured by Faceabot as working: Dmarc Spf Audit, Domain Health, DnsGuard.

How do I connect an AI agent to x402 DNS Email Auth Checker?

Use the MCP streamable HTTP endpoint https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp.

Catalog › dev.workers.microtools-x402.x402-dns-auth-checker/dns-auth-checker

Is x402 DNS Email Auth Checker reliable?

Reliable (measured) Yes. Faceabot measured x402 DNS Email Auth Checker 7 times: 100% of checks succeeded, including the last 7 in a row (last check 2026-10-19 21:25 UTC).

Last check: 2026-10-19 21:25 UTC · answered in 7903 ms · remote (no install)

En français : Fiable (mesuré). Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Audit SPF, DKIM, DMARC, MX, BIMI, MTA-STS for a domain; score + grade. $0.003 USDC/call via x402.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 0.1.1 · publisher website

Connect your agent

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

Or ask Faceabot first: MCP tool check_reliability {"id":"dev.workers.microtools-x402.x402-dns-auth-checker/dns-auth-checker"} on https://faceabot.com/api/mcp.

Does it actually do the job?

Not tested with a real task yet. Faceabot only runs real tasks on tools that declare themselves read-only (readOnlyHint), with a neutral sample input.

Other proven tools for the same job

Dmarc Spf Audit Reliable (measured) · 100%
Complete domain email-auth audit in one call: SPF with RFC 7208 lookup counting, DKIM selector pr... · https://dmarc-spf-audit.david-cyr.workers.dev/mcp

Domain Health Reliable (measured) · 100%
Domain checks: SPF, DKIM, DMARC, BIMI, MTA-STS, SSL/TLS and HTTP security headers. · https://mcp.modernmustardseed.com/domain-health

DnsGuard Reliable (measured) · 100%
Check a domain's email authentication: SPF, DKIM, DMARC, BIMI, MX, MTA-STS, TLS-RPT. Score + fixes. · https://dnsguard.mike-tusa.workers.dev/mcp

Picked from Faceabot's live measurements. Or let Faceabot choose: GET https://faceabot.com/resolve?need=…

Faceabot measurements

When	Answers	Real task	Latency
2026-10-19 21:25 UTC	✅ ok	—	7903 ms
2026-10-19 08:50 UTC	✅ ok	—	7122 ms
2026-10-18 16:00 UTC	✅ ok	—	7694 ms
2026-10-18 05:00 UTC	✅ ok	—	6244 ms
2026-10-17 21:05 UTC	✅ ok	—	5981 ms
2026-10-17 12:40 UTC	✅ ok	—	7466 ms
2026-10-17 05:00 UTC	✅ ok	—	7501 ms

Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

Publisher of x402 DNS Email Auth Checker?

Show your measured reliability on your README or website:

[![Measured by Faceabot](https://faceabot.com/badge/dev.workers.microtools-x402.x402-dns-auth-checker/dns-auth-checker.svg)](https://faceabot.com/tools/dev.workers.microtools-x402.x402-dns-auth-checker/dns-auth-checker)

Data in JSON: /api/catalog?id=dev.workers.microtools-x402.x402-dns-auth-checker/dns-auth-checker · Stop probes: POST /api/reliability/opt-out

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

Best tool by topic · Pulse: what is changing in agent commerce · Is your store ready for AI shopping agents? · State of MCP (weekly) · MCP server doctor · Reliability data · Faceabot app · Faceabot → AI assistants · What AI agents cannot find yet · Add Faceabot to your AI · Badge for tool publishers · Help · Privacy · Terms