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402 Guard — Domain Audit
x402
402 Guard — Domain Audit is a paid API for AI agents from x402.momentbolt.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).
Audits a domain's live DNS and email-security posture (SPF, DMARC, DNSSEC, MX) and returns a graded security score, paid via tiny USDC microtransaction on Base.
Price / call$0.002
Success—
StatusUnknown
How this service works
Lint x402 payment requirements or audit live DNS and email-security posture with tiny USDC payments on Base.
Output
Returns a JSON object with an overall letter grade (e.g. 'A'), numeric score (0–100), the queried domain, full posture details (SPF record, DMARC record, whether the domain resolves, whether it accepts email, DNSSEC authentication status), and a list of findings each with a code, human-readable message, and severity level.
Example use cases
Vendor email security due diligence
“Before we start sending invoices to our new supplier at acmecorp.com, can you audit their domain's email security posture — check if they have proper SPF, DMARC, and DNSSEC set up and give me a grade?”
Phishing domain safety check
“I received an email from support@paypa1.com and I'm suspicious — can you audit that domain's DNS and email-security configuration to see if it looks like a legitimate sender or a spoofing setup?”
Pre-launch domain security verification
“We're about to launch our new product at launchpad.example.io — can you audit the domain's email security posture and tell me if our SPF and DMARC records are configured correctly before we go live?”
Technical details
Endpoint
POSThttps://x402.momentbolt.com/api/domain-audit?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a live, graded audit of a specific domain's DNS and email-security posture including SPF, DMARC, DNSSEC, and MX acceptance — especially in agentic workflows that already handle x402 micropayments on Base. It is ideal for pre-send email infrastructure checks, vendor due diligence, or suspicious domain triage where a structured grade and detailed findings list are required.
Side effects
- Invalid or malformed domain name returns an error
- Domain does not resolve — flagged in posture with resolves: false
- Network timeout if live DNS lookup is slow
- Missing SPF or DMARC records reflected in posture fields and lower score
- Payment failure if insufficient USDC balance on Base
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | ASCII or punycode domain name without a URL path |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"grade": "A",
"score": 96,
"domain": "example.com",
"posture": {
"spf": "v=spf1 -all",
"dmarc": "v=DMARC1; p=reject;",
"resolves": true,
"acceptsEmail": false,
"dnssecAuthenticated": true
},
"findings": [
{
"code": "NULL_MX",
"message": "The domain explicitly declares that it does not accept email.",
"severity": "info"
}
]
}
}Tags
x402
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