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ChainVerdict Email Security DNS Check API
x402
ChainVerdict Email Security DNS Check API is a paid API for AI agents from chainverdict.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-11).
Checks a domain's email security DNS records (SPF, DMARC, DKIM) to assess its email authentication posture
Price / call$0.01
Success—
StatusUnknown
How this service works
x402 v2 pay-per-call. Unpaid requests receive HTTP 402 with payment requirements.
Output
Returns DNS-based email authentication record details for the queried domain, including the presence, validity, and configuration of SPF, DMARC, and DKIM records, along with an overall security posture assessment.
Example use cases
Pre-send email deliverability check
“Before I send this campaign, can you verify that acmecorp.com has valid SPF and DMARC records so my emails won't get flagged as spam?”
Phishing domain investigation
“I got a suspicious email from someone claiming to be from fastpayments.io — can you check if that domain has proper email authentication set up, or if it looks like a spoofed sender?”
Vendor email security audit
“We're onboarding a new supplier at supplierco.com and I need to verify they have SPF, DMARC, and DKIM configured before we start exchanging sensitive documents over email.”
Technical details
Endpoint
GEThttps://chainverdict.xyz/v1/security/email/%7Bdomain%7DWhen to prefer
Choose this endpoint when you need a quick, pay-per-call lookup of email authentication DNS records (SPF, DMARC, DKIM) for a single domain without requiring a subscription. It is well-suited for on-demand security checks in agent workflows, phishing investigation pipelines, or vendor onboarding automation where you only occasionally need to audit domains.
Side effects
- Domain does not exist — DNS lookup failure or NXDOMAIN response
- Domain has no SPF/DMARC/DKIM records — returns empty or missing record indicators
- Invalid domain format in path parameter — may return 400 or malformed response
- Payment not provided — HTTP 402 returned with payment requirements before any data
- Rate limiting or transient DNS resolution errors — may require retry
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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