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DomainSignal Domain Classification & DNS Intelligence
x402
DomainSignal Domain Classification & DNS Intelligence is a paid API for AI agents from api.servocenter.com, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).
Classifies a domain (or email/URL) as disposable, free provider, custom, or unresolved, and audits its DNS/mail security configuration including SPF, MX, and website DNS presence.
Price / call$0.001
Success—
StatusDown
How this service works
Pay-per-result domain qualification, DNS security audits, and website intelligence over x402.
Output
Returns a JSON object with the queried domain, a classification label (disposable_email, free_email_provider, custom_domain, or unresolved), boolean flags for has_dns, website_dns_present, mail_configured, spf_configured, disposable, and free_email_provider, the detected MX provider (or null), a confidence score between 0 and 1, and an observed_at timestamp.
Example use cases
Screen signups for throwaway emails
“A user just signed up with the email address 'user@guerrillamail.com' — can you check if that domain is disposable or a known free provider, and whether it has real mail infrastructure configured?”
Qualify B2B lead domain
“I have a sales lead from 'contact@acmecorp.io' — can you check if that's a legitimate custom business domain with DNS and mail properly set up, or just a free email provider?”
Audit outbound email domain security
“Before we start our email campaign, can you audit 'ourdomain.com' to confirm it has SPF records configured and mail properly set up so we don't get flagged as spam?”
Technical details
Endpoint
GEThttps://api.servocenter.com/api/v1/domain/classifyWhen to prefer
Choose this endpoint when you need to qualify or screen a domain or email address for legitimacy, detect disposable or free email providers at signup, audit DNS and mail security posture (SPF, MX), or enrich lead data with domain intelligence — especially in automated pipelines where per-call pay-as-you-go pricing (via x402) is preferred over subscription APIs.
Side effects
- Domain not found or unresolvable — classification returns 'unresolved' with low confidence
- Invalid input format (non-domain string) — may return error or low-confidence result
- Transient DNS lookup failures — may produce stale or incomplete DNS audit data
- Edge-case TLDs or very new domains may have lower confidence scores
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "example.com",
"confidence": 0.93,
"classification": "custom_domain",
"mail_configured": true
}
}Tags
x402
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