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Email Authentication Posture Checker (DMARC + SPF)
x402
Email Authentication Posture Checker (DMARC + SPF) is a paid API for AI agents from x402-portfolio.x402iom.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Fetches, parses, and scores a domain's DMARC and SPF DNS records, returning a 0-100 posture score with findings and actionable fix recommendations.
Price / call$0.01
Success—
StatusUnknown
How this service works
Email authentication posture for a domain: DMARC + SPF records fetched, parsed, scored 0-100, with findings and fix recommendations.
Output
Returns parsed DMARC and SPF DNS records for the requested domain, a numeric posture score from 0 to 100 indicating overall email authentication strength, a list of specific findings (e.g. missing DMARC policy, overly permissive SPF), and actionable recommendations to remediate each issue.
Example use cases
Pre-send domain deliverability audit
“Before we send our next marketing campaign, can you check the email authentication posture for our domain acmecorp.com? I want to see the DMARC and SPF setup, the security score, and any problems we should fix first.”
Vendor email security due diligence
“I'm evaluating a new vendor and I want to know how seriously they take email security — can you pull the DMARC and SPF records for vendorxyz.com and give me a posture score with any red flags?”
Spoofing protection verification
“I'm worried our domain mybrand.io might be vulnerable to email spoofing. Can you check if our DMARC and SPF records are properly configured and tell me what score we get and what needs to be fixed?”
Technical details
Endpoint
GEThttps://x402-portfolio.x402iom.workers.dev/email-auth/:var1When to prefer
Use this endpoint when you need a quick, scored assessment of a domain's email authentication posture (DMARC + SPF) with human-readable findings and fix recommendations. It is ideal for security audits, pre-send deliverability checks, vendor due diligence, or identifying spoofing vulnerabilities. Prefer this over raw DNS lookup tools when you want interpreted results rather than raw record text.
Side effects
- Domain does not exist or has no DNS records — returns error or empty findings
- DMARC or SPF record is absent — score reflects missing configuration
- Malformed DNS record that cannot be parsed — may return partial results
- Rate limiting or DNS resolution timeout — returns error
- Invalid domain format in path parameter — returns validation error
Tags
x402
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