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x402 Web Tools – Email Domain Check
x402
x402 Web Tools – Email Domain Check is a paid API for AI agents from x402-web-tools.onrender.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-18).
Checks whether a domain or email address can receive email, identifies the mail provider, and returns deliverability signals including DMARC policy and disposable-address status.
Price / call$0.002
Success—
StatusUnknown
How this service works
Pay-per-call web tools for AI agents. No API keys: pay per request in USDC on Base via x402.
Output
Returns a JSON object with the domain name, identified email provider (e.g. Google, Microsoft), a boolean flag indicating if the domain can receive email, whether it is a disposable/throwaway domain, the DMARC policy string (e.g. 'reject', 'quarantine', 'none'), and a numeric deliverability score from 0 to 100.
Example use cases
Pre-send campaign domain validation
“Before I send out this marketing email batch, check whether 'tempmail.com' is a disposable domain and if it can receive email — I want to clean my list.”
New user signup fraud check
“A user just signed up with an address at 'guerrillamail.com' — can you tell me if that's a throwaway/disposable email domain and what its deliverability score is?”
B2B lead enrichment
“I've got a lead from someone at 'hubspot.com' — can you look up who their email provider is, confirm the domain can receive email, and tell me their DMARC policy?”
Technical details
Endpoint
GEThttps://x402-web-tools.onrender.com/api/email-domain-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need quick, pay-per-use email domain validation without managing API keys or subscriptions. It is ideal for single-domain lookups during signup flows, lead enrichment pipelines, or pre-send email list hygiene checks where you want provider identification, disposable-address detection, and DMARC policy all in one call.
Side effects
- Invalid or malformed domain/email input returns an error response
- Domain does not exist in DNS — canReceiveEmail returns false with low deliverability score
- DMARC record absent — dmarcPolicy may be null or 'none'
- Payment failure via x402 results in HTTP 402 and no data returned
- Rate limits or upstream DNS timeouts may cause delayed or missing responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "stripe.com",
"provider": "Google",
"disposable": false,
"dmarcPolicy": "reject",
"canReceiveEmail": true,
"deliverabilityScore": 100
}
}Tags
x402
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