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Agent Tools Domain Lookup
x402
Agent Tools Domain Lookup is a paid API for AI agents from agent-tools.jbarkules.workers.dev, paid per call via x402, $0.0018/call, status unknown (last checked 2026-10-29).
Returns WHOIS/RDAP registration data, DNS records (A/AAAA/MX/NS/TXT), SPF, DMARC, and HTTPS reachability for a domain in a single call.
Price / call$0.0018
Success—
StatusUnknown
How this service works
Domain intelligence for due diligence, phishing checks and lead research: registrar, creation and expiry dates (RDAP/WHOIS), A/AAAA/MX/NS/TXT records, SPF, DMARC and HTTPS reachability in one call.
Output
A JSON object containing: the domain name, registration status, registrar name, creation and expiry dates (ISO 8601), DNS records (A, MX, NS arrays), email security fields (SPF string and DMARC string or null), and HTTPS reachability (boolean + HTTP status code).
Example use cases
Phishing domain investigation
“Someone sent me an email from support@secure-paypa1.com — can you check if that domain looks legit? I want to know who registered it, how old it is, whether it has proper email security, and if it's even reachable.”
B2B lead research enrichment
“I'm researching a potential customer at brightwave-solutions.com — can you pull their domain registration details, DNS records, and check if they have SPF and DMARC configured so I know they're a real operating business?”
Vendor due diligence check
“Before we sign a contract with this supplier, can you do a quick domain check on supplierco.net — find out when the domain was created, when it expires, who the registrar is, and whether the domain has working MX records and HTTPS?”
Technical details
Endpoint
GEThttps://agent-tools.jbarkules.workers.dev/v1/domain/lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need comprehensive domain intelligence in a single call — combining RDAP/WHOIS registration data, full DNS record sets, and email security posture (SPF/DMARC) together. Prefer it over separate WHOIS or DNS tools when doing phishing investigation, lead enrichment, or vendor due diligence where you need all signals at once without chaining multiple APIs.
Side effects
- Domain not found or unregistered — registered: false with empty/null RDAP fields
- DNS resolution failure — A/MX/NS arrays may be empty if nameservers are unresponsive
- HTTPS unreachable — reachable: false with null or non-2xx status
- Invalid domain input format — likely 400 error or empty result
- Rate limiting or upstream RDAP/WHOIS throttling — may return incomplete data
- TLD with no public RDAP/WHOIS — registration fields may be null or unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"dns": {
"a": [
"93.184.215.14"
],
"mx": [],
"ns": [
"a.iana-servers.net."
]
},
"https": {
"status": 200,
"reachable": true
},
"domain": "example.com",
"created": "1995-08-14T04:00:00Z",
"expires": "2027-08-13T04:00:00Z",
"registrar": "RESERVED-Internet Assigned Numbers Authority",
"registered": true,
"email_security": {
"spf": "v=spf1 -all",
"dmarc": null
}
}
}Tags
x402
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