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Penniless Data Utilities – WHOIS / RDAP Domain Lookup
x402
Penniless Data Utilities – WHOIS / RDAP Domain Lookup is a paid API for AI agents from penniless-json-repair.sjaman.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns structured WHOIS/RDAP registration data for a domain, including registrar, nameservers, status flags, DNSSEC status, and registration/expiration dates.
Price / call$0.001
Success—
StatusUnknown
How this service works
Deterministic, dependency-free data utilities served over x402 micropayments (USDC on Base). None of these call another AI model. Keyword: JSON repair Keyword: malformed JSON Keyword: broken JSON from LLM Keyword: fix JSON output Keyword: JSON sanitizer Keyword: truncated JSON recovery Keyword: YAML to JSON Keyword: convert YAML Keyword: parse YAML config Keyword: cron next run Keyword: cron parser Keyword: when does cron run next Keyword: unified diff Keyword: line diff Keyword: text diff Keyword: HTML to text Keyword: extract links Keyword: extract emails Keyword: scrape text Keyword: whois lookup Keyword: domain registration Keyword: registrar Keyword: domain expiry date Keyword: RDAP Keyword: dns lookup Keyword: MX records Keyword: TXT records Keyword: A record Keyword: DNS over HTTPS Keyword: github repo stats Keyword: github stars Keyword: repository popularity Keyword: OSS project metadata Keyword: email validation Keyword: verify email address Keyword: check MX deliverability Keyword: email syntax Use case: repair a JSON code block wrapped in Markdown fences Use case: turn a docker-compose or CI YAML file into JSON Use case: compute the next UTC fire time of a cron expression Use case: produce a unified diff between two versions of a file Use case: strip HTML tags and pull out links, emails, and headings Use case: look up a domain's registrar, status and expiry before purchase Use case: check when a domain registration lapses Use case: resolve A, AAAA, MX, TXT or NS records for a hostname Use case: find a domain's mail servers and SPF TXT record Use case: compare GitHub repository stars, forks and activity for market research Use case: check whether an email address is well-formed and its domain accepts mail
Output
A JSON object with fields: ok (boolean), found (boolean), domain (string), registrar (string), nameservers (array of strings), status (array of status strings like 'client transfer prohibited'), dnssec.signed (boolean), and events containing ISO-8601 registration and expiration timestamps.
Example use cases
Domain expiry monitoring for portfolio
“Check when stripe.com expires and who it's registered with — I need to know the registrar and expiration date so I can flag it if it's coming up soon.”
Due diligence on a potential acquisition
“Pull the WHOIS registration details for acmecorp.io — I want the registrar, nameservers, registration date, current status flags, and whether DNSSEC is enabled.”
Verify domain ownership before outreach
“Who is the registrar for mozilla.org and is there a client transfer prohibited status on it? Also tell me the nameservers.”
Technical details
Endpoint
POSThttps://penniless-json-repair.sjaman.workers.dev/domain/whoisWhen to prefer
Choose this endpoint when you need structured, machine-readable WHOIS/RDAP data without parsing raw WHOIS text. It is ideal for domain expiry checks, registrar lookups, nameserver verification, DNSSEC audits, and due-diligence workflows where a clean JSON response is required. At $0.001 USDC per call via x402 micropayments, it is cost-effective for high-volume domain intelligence tasks. Prefer this over scraping WHOIS directly when deterministic output and no external AI dependencies are required.
Side effects
- Domain not found in RDAP/WHOIS — returns ok:true, found:false
- Invalid or malformed domain name input — likely returns an error response
- Registry temporarily unavailable — network-level or upstream RDAP registry timeout
- TLD not supported by RDAP — some ccTLDs may not have RDAP coverage
- Rate limiting from upstream RDAP registries causing delayed or failed responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"found": true,
"dnssec": {
"signed": true
},
"domain": "example.com",
"events": {
"expiration": "2027-08-14T04:00:00Z",
"registration": "1995-08-14T04:00:00Z"
},
"status": [
"client transfer prohibited"
],
"registrar": "Example Registrar, Inc.",
"nameservers": [
"a.iana-servers.net",
"b.iana-servers.net"
]
}
}Tags
x402
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