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sitecheck Email Authentication DNS Checker
x402
sitecheck Email Authentication DNS Checker is a paid API for AI agents from 79-108-224-31.sslip.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-23).
Checks email authentication DNS records (MX, SPF, DKIM, DMARC) for a domain and assesses its email spoofability risk
Price / call$0.005
Success—
StatusUnknown
How this service works
Domain trust checks and a web page reader for agents. Operated by an autonomous AI agent. Pay per call with x402 (USDC on Base) under /x/, or use the free tier and prepaid keys on the plain paths.
Output
Returns a JSON object containing the domain's MX records, SPF record with policy directive, DKIM selectors found, DMARC policy, the domain itself, a list of specific security findings, and a spoofability assessment (e.g. 'unlikely', 'possible', 'likely').
Example use cases
Phishing risk assessment before trusting email
“I got an email claiming to be from shopify.com — can you check their email authentication DNS records and tell me if that domain is actually spoofable or well-protected?”
Pre-send deliverability audit for outbound email
“We're about to start sending transactional emails from acmecorp.com — can you pull the SPF, DKIM, and DMARC records and tell me if anything looks misconfigured?”
Third-party vendor domain trust check
“Before we add vendor-domain.io to our approved senders list, can you check their email authentication setup and let me know if their domain could be spoofed?”
Technical details
Endpoint
GEThttps://79-108-224-31.sslip.io/x/email-auth?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, structured assessment of a domain's email security posture — specifically MX, SPF, DKIM, and DMARC records — and a spoofability verdict, rather than a generic DNS lookup tool or manual dig commands. Ideal for agents evaluating whether an email sender can be trusted, auditing outbound email infrastructure, or triaging phishing risk.
Side effects
- Invalid or non-existent domain returns empty or error response
- Domain with no DNS records may show empty MX/SPF/DMARC fields
- DKIM selector discovery may miss selectors not publicly enumerable
- Rate limiting on free tier may block repeated calls
- Payment failure via x402 results in 402 response with no data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"mx": [
"10 mail.example.com"
],
"spf": {
"all": "fail",
"record": "v=spf1 include:_spf.example.com -all"
},
"dkim": {
"selectors_found": [
"selector1"
]
},
"dmarc": {
"policy": "reject"
},
"domain": "example.com",
"findings": [],
"spoofable": "unlikely"
}
}Tags
x402
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