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Northline WebKit – WHOIS/RDAP Domain Lookup
x402
Northline WebKit – WHOIS/RDAP Domain Lookup is a paid API for AI agents from northline-webkit.northline-c86.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).
Returns WHOIS/RDAP registration data for a domain, including creation date, registrar, age, and registration status.
Price / call$0.002
Success—
StatusUnknown
How this service works
Pay-per-call web and domain utilities for AI agents: URL to Markdown, link preview metadata, links, uptime/redirect check, DNS, email-domain check, WHOIS/RDAP, robots.txt and a one-call domain report. x402 (USDC on Base), no API key, no signup.
Output
Returns a JSON object with the domain name, number of days since registration (ageDays), ISO 8601 creation date (created), registrar name, and a boolean indicating whether the domain is registered.
Example use cases
Verify domain legitimacy before outreach
“Before I send a partnership proposal to the email on their website, can you pull up WHOIS data for acmecorp.io so I can see when it was registered and who the registrar is? I want to make sure it's not a freshly spun-up domain.”
Research competitor domain age
“I'm doing competitive research — can you check the WHOIS record for shopify.com and tell me when it was first registered and how many days old it is?”
Detect suspicious newly registered domains
“We got an email from someone claiming to be from payments-secure-banking.com — can you run a WHOIS lookup on that domain and tell me its creation date, registrar, and whether it's even registered?”
Technical details
Endpoint
GEThttps://northline-webkit.northline-c86.workers.dev/v1/domain/whois?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need quick, structured WHOIS/RDAP data (registrar, creation date, domain age) without an API key or signup, and are comfortable paying $0.002 USDC per call via x402 on Base. Ideal for AI agents doing automated domain vetting, fraud detection, or competitive research at low cost per query.
Side effects
- Domain not found or unregistered: may return registered=false with minimal data
- Invalid domain format: schema requires minLength of 3 characters
- RDAP/WHOIS registry unreachable: upstream timeout or error
- Rate limiting or payment failure via x402 protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "example.com",
"ageDays": 11400,
"created": "1995-08-14T04:00:00Z",
"registrar": "RESERVED-Internet Assigned Numbers Authority",
"registered": true
}
}Tags
x402
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