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ATK Email Authentication Security Checker
x402
ATK Email Authentication Security Checker is a paid API for AI agents from atkvn.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Analyzes a domain's email authentication configuration (DMARC, MTA-STS, SPF, etc.) and returns a security grade with actionable remediation items
Price / call$0.002
Success—
StatusUnknown
How this service works
Grade a domain's email authentication A-F: SPF (lookup count, all-qualifier, duplicates), DMARC policy and reporting, MTA-STS mode, BIMI. Use before sending campaigns or to assess spoofing risk of a vendor's domain.
Output
A JSON object containing a letter security grade (e.g. 'B'), the domain analyzed, the DMARC policy in effect, and a 'todo' array listing specific remediation recommendations such as missing MTA-STS configuration or policy weaknesses.
Example use cases
Pre-send domain security check
“Before we launch our email campaign, can you check the email authentication grade for our domain mybrand.com and tell me if there's anything urgent we need to fix?”
Vendor email security due diligence
“I'm about to sign a contract with a supplier using supplier.io — can you check their email authentication setup and let me know if their DMARC policy is solid or if there are gaps?”
Security posture monitoring for owned domains
“Can you audit the email security configuration for acmecorp.com and give me a full breakdown of what's missing — DMARC, MTA-STS, anything else that's flagged?”
Technical details
Endpoint
GEThttps://atkvn.com/agent/v1/email-auth?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, structured email security assessment for any domain — especially when you want a graded report with explicit remediation steps. Prefer this over raw DNS lookups when you need a human-readable grade and consolidated view of DMARC, MTA-STS, and SPF posture in one call. Ideal for due diligence, compliance audits, or pre-deployment verification of email infrastructure.
Side effects
- Domain does not exist or has no DNS records — may return empty or error response
- Domain parameter missing from query — schema validation failure
- DNS lookup timeout for domains with slow resolvers
- Domains with no DMARC record may return minimal results
- Rate limiting or payment failure for high-volume usage
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"todo": [
"No MTA-STS ..."
],
"dmarc": {
"policy": "quarantine"
},
"grade": "B",
"domain": "example.com"
}
}Tags
x402
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