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Email Domain Enrichment API
x402
Email Domain Enrichment API is a paid API for AI agents from x402-canary.nicolas-x402-16f380a7.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Given an email address, returns DNS-level domain health signals including MX record presence, SPF policy, and DMARC configuration.
Price / call$0.02
Success—
StatusUnknown
How this service works
Free need-to-tool routing plus pay-per-call npm docs and TypeScript API signatures, npm breaking-change diffs, JavaScript-rendered browser snapshots and deterministic coding-agent checks via AgentCash/x402.
Output
Returns a JSON object containing the extracted domain from the email, a boolean indicating whether MX records exist, a boolean for SPF record presence, and a boolean for DMARC record presence, along with an engine metadata field identifying the enrichment source.
Example use cases
Pre-send deliverability check
“Before we send this campaign, check whether newsletter@startup.io has a valid MX record and SPF set up so I know if mail to that domain will actually land.”
Lead qualification email hygiene
“I have a new lead with email contact@prospectbiz.com — can you check if their domain has MX records, SPF, and DMARC so I can judge how legitimate this address is?”
Vendor email security audit
“We're onboarding a new vendor using billing@vendorco.net — please check if that domain has DMARC and SPF configured so I know if their email setup meets our security requirements.”
Technical details
Endpoint
POSThttps://x402-canary.nicolas-x402-16f380a7.workers.dev/v1/email/domain-enrichWhen to prefer
Use this endpoint when you need lightweight, DNS-level email domain health signals (MX, SPF, DMARC) without a full email verification ping. It is ideal for lead scoring, form submission hygiene checks, or vendor onboarding workflows where you need to assess domain mail infrastructure quickly and cheaply at $0.02 per call.
Side effects
- Invalid or malformed email input returns an error or empty result
- Domain does not exist — all booleans may return false
- DNS lookup timeout may cause delayed or failed response
- Missing email field in request body causes a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"domain": "example.com",
"has_mx": true,
"spf_present": true,
"dmarc_present": true
},
"meta": {
"engine": "domain-enrich"
}
}
}Tags
x402
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