WHOIS RDAP Domain Lookup
WHOIS / RDAP domain lookup: give a domain, get registrar, registration (creation), expiry and last-updated dates, status codes and nameservers from the registry's RDAP service, plus DNS records and SPF/DMARC/DKIM email-auth posture. Use to check a domain's age, registrar or expiry before trusting a merchant, vendor or counterparty. No personal data. Signed receipt.
DataLiveeip155:8453Exactvia cdp
WhoisRdapDomain-ageDomainKyb
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 4 snapshots so far.
$0.09
Verified settled volume
33 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-22 20:00Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x39BF4378b74f9E19c5113b00b01f57d94537bad1The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"invoiceId": "1792704388-f272fce1355141f4-d2366-b94392ee3807fcab4f9a8e54"
},
"payTo": "0x39BF4378b74f9E19c5113b00b01f57d94537bad1",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
},
{
"asset": "XRP",
"extra": {
"invoiceId": "1792704388-f272fce1355141f4-d2366-b94392ee3807fcab4f9a8e54",
"sourceTag": 26100011
},
"payTo": "r3BsahzSMtF4HiJuL8HMf1se6T1JtMB6hg",
"amount": "2366",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 600
},
{
"asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
"extra": {
"name": "USDC",
"version": "2",
"invoiceId": "1792704388-f272fce1355141f4-d2366-b94392ee3807fcab4f9a8e54"
},
"payTo": "0x3177FA489523ddF60f293898f7Ee5912576f3d9b",
"amount": "3000",
"scheme": "exact",
"network": "eip155:84532",
"maxTimeoutSeconds": 600
},
{
"asset": "XRP",
"extra": {
"invoiceId": "1792704388-f272fce1355141f4-d2366-b94392ee3807fcab4f9a8e54",
"sourceTag": 26100011
},
"payTo": "rDbkEYdqLHcnWAHAVFwhH6KM6puCPbXNgs",
"amount": "2366",
"scheme": "exact",
"network": "xrpl:1",
"maxTimeoutSeconds": 600
}
],
"resource": {
"url": "https://api.stablecoingateways.com/v1/whois",
"tags": [
"whois",
"rdap",
"domain-age",
"domain",
"kyb"
],
"mimeType": "application/json",
"description": "WHOIS / RDAP domain lookup: give a domain, get registrar, registration (creation), expiry and last-updated dates, status codes and nameservers from the registry's RDAP service, plus DNS records and SPF/DMARC/DKIM email-auth posture. Use to check a domain's age, owner registrar or expiry before trusting a counterparty. No personal data. Signed receipt.",
"serviceName": "WHOIS RDAP Domain Lookup"
},
"extensions": {
"docs": "https://api.stablecoingateways.com/openapi.json",
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"domain": "example.com"
}
},
"output": {
"type": "json",
"example": {
"data": {
"dns": {
"a": [
"104.20.23.154"
],
"mx": [
{}
],
"ns": [
"hera.ns.cloudflare.com"
],
"caa": [],
"aaaa": [
"2606:4700:10::ac42:93f3"
]
},
"rdap": {
"source": "https://rdap.verisign.com/com/v1/",
"available": true,
"registrar": "RESERVED-Internet Assigned Numbers Authority",
"registered_domain": "example.com",
"registrar_iana_id": "376"
},
"https": {
"hsts": null,
"probed": true,
"status": 200,
"reachable": true,
"redirect_host": null
},
"notes": "TLS certificate details are not inspected from Workers; https.reachable reflects a succ...",
"domain": "example.com",
"exists": true,
"sources": [
"DNS via Cloudflare DoH (cloudflare-dns.com)"
],
"mail_auth": {
"spf": {
"present": true,
"includes": [],
"all_qualifier": "-all",
"dns_lookup_terms": 0,
"multiple_records": false
},
"dmarc": {
"pct": 100,
"adkim": "s",
"policy": "reject",
"present": true,
"subdomain_policy": "reject"
},
"mta_sts": false,
"dkim_selectors_found": [
{}
],
"dkim_selectors_checked": [
"default"
]
},
"checked_at": "2026-10-22T09:01:19.207Z"
},
"receipt": {
"v": 1,
"ts": "2026-10-22T09:00:00Z",
"sig": "hex",
"price": {
"asset": "USDC",
"amount": "3000",
"network": "eip155:84532"
},
"log_seq": 1,
"tx_hash": "0x..",
"endpoint_id": "whois-v1",
"request_hash": "hex",
"response_hash": "hex"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"queryParams": {
"type": "object",
"required": [
"domain"
],
"properties": {
"domain": {
"type": "string",
"pattern": "^[A-Za-z0-9.-]{3,253}$",
"description": "Registrable domain or full hostname"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"data",
"receipt"
],
"properties": {
"data": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"dns": {
"type": "object",
"properties": {
"a": {
"type": "array",
"items": {
"type": "string"
}
},
"mx": {
"type": "array",
"items": {
"type": "object"
}
},
"ns": {
"type": "array",
"items": {
"type": "string"
}
},
"caa": {
"type": "array",
"items": {}
},
"aaaa": {
"type": "array",
"items": {
"type": "string"
}
},
"txt_count": {
"type": "integer"
},
"dnssec_validated_answer": {
"type": "boolean"
}
}
},
"rdap": {
"type": "object",
"properties": {
"note": {
"type": "string"
},
"source": {
"type": "string"
},
"status": {
"type": "array",
"items": {
"type": "string"
}
},
"expires": {
"type": "string"
},
"available": {
"type": "boolean"
},
"registrar": {
"type": "string"
},
"registered": {
"type": "string"
},
"nameservers": {
"type": "array",
"items": {
"type": "string"
}
},
"last_changed": {
"type": "string"
},
"dnssec_signed": {
"type": "boolean"
},
"registered_domain": {
"type": "string"
},
"registrar_iana_id": {
"type": "string"
}
}
},
"https": {
"type": "object",
"properties": {
"hsts": {},
"probed": {
"type": "boolean"
},
"status": {
"type": "integer"
},
"reachable": {
"type": "boolean"
},
"redirect_host": {}
}
},
"notes": {
"type": "string"
},
"domain": {
"type": "string"
},
"exists": {
"type": "boolean"
},
"sources": {
"type": "array",
"items": {
"type": "string"
}
},
"mail_auth": {
"type": "object",
"properties": {
"spf": {
"type": "object"
},
"dmarc": {
"type": "object"
},
"mta_sts": {
"type": "boolean"
},
"tls_rpt": {
"type": "boolean"
},
"dkim_selectors_found": {
"type": "array",
"items": {
"type": "object"
}
},
"dkim_selectors_checked": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"checked_at": {
"type": "string"
}
}
},
"receipt": {
"type": "object",
"required": [
"v",
"endpoint_id",
"ts",
"price",
"tx_hash",
"request_hash",
"response_hash",
"log_seq",
"sig"
],
"description": "Ed25519-signed receipt; verify free at POST /v1/verify-receipt"
}
}
}
}
}
}
}
},
"params": {
"domain": "registrable or full hostname, e.g. example.com"
},
"source": "Registry data from public RDAP via the IANA bootstrap (Verisign for .com/.net), cached 24 h; live DNS (Cloudflare DoH). Alias of /v1/domain-facts",
"status": "https://api.stablecoingateways.com/status",
"receipts": "https://api.stablecoingateways.com/v1/verify-receipt",
"price_usd": "0.003",
"xrp_quote": {
"usd": "0.003",
"note": "XRP amount = ceil(USD / quote x 1e6 x (1+margin)); bound into the invoice MAC",
"age_s": 0,
"state": "fresh",
"source": "coinbase:XRP-USD spot",
"available": true,
"max_age_s": 900,
"quoted_at": "2026-10-22T21:16:28.789Z",
"xrp_drops": "2366",
"margin_pct": 3,
"usd_per_xrp": 1.3065
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.003USDC≈ $0.003 USD
on Base · exact scheme
Pay 0.003 USDC on Base to 0x39BF…7bad1. The signed payment is good for 10 minutes.
- Paid to
- 0x39BF…7bad1
- USD Coin contract
- 0x8335…02913
- Payment window
- 10 minutes
- As published
- 3000 smallest units
2390units
on xrpl:0 · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- r3Bsah…MB6hg
- Token contract
- XRP
- Payment window
- 10 minutes
0.003USDC≈ $0.003 USD
on Base Sepolia · exact scheme
Pay 0.003 USDC on Base Sepolia to 0x3177…f3d9b. The signed payment is good for 10 minutes.
- Paid to
- 0x3177…f3d9b
- USD Coin (Base Sepolia) contract
- 0x036C…dCF7e
- Payment window
- 10 minutes
- As published
- 3000 smallest units
2390units
on xrpl:1 · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- rDbkEY…bXNgs
- Token contract
- XRP
- Payment window
- 10 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"invoiceId": "1793025548-d9a256fc2e0a4cb8-d2390-b613aa91d685ca0bc7c84322"
},
"payTo": "0x39BF4378b74f9E19c5113b00b01f57d94537bad1",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
},
{
"asset": "XRP",
"extra": {
"invoiceId": "1793025548-d9a256fc2e0a4cb8-d2390-b613aa91d685ca0bc7c84322",
"sourceTag": 26100011
},
"payTo": "r3BsahzSMtF4HiJuL8HMf1se6T1JtMB6hg",
"amount": "2390",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 600
},
{
"asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
"extra": {
"name": "USDC",
"version": "2",
"invoiceId": "1793025548-d9a256fc2e0a4cb8-d2390-b613aa91d685ca0bc7c84322"
},
"payTo": "0x3177FA489523ddF60f293898f7Ee5912576f3d9b",
"amount": "3000",
"scheme": "exact",
"network": "eip155:84532",
"maxTimeoutSeconds": 600
},
{
"asset": "XRP",
"extra": {
"invoiceId": "1793025548-d9a256fc2e0a4cb8-d2390-b613aa91d685ca0bc7c84322",
"sourceTag": 26100011
},
"payTo": "rDbkEYdqLHcnWAHAVFwhH6KM6puCPbXNgs",
"amount": "2390",
"scheme": "exact",
"network": "xrpl:1",
"maxTimeoutSeconds": 600
}
]Extensions
{
"docs": "https://api.stablecoingateways.com/openapi.json",
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"domain": "example.com"
}
},
"output": {
"type": "json",
"example": {
"data": {
"dns": {
"a": [
"104.20.23.154"
],
"mx": [
{}
],
"ns": [
"hera.ns.cloudflare.com"
],
"caa": [],
"aaaa": [
"2606:4700:10::ac42:93f3"
]
},
"rdap": {
"source": "https://rdap.verisign.com/com/v1/",
"available": true,
"registrar": "RESERVED-Internet Assigned Numbers Authority",
"registered_domain": "example.com",
"registrar_iana_id": "376"
},
"https": {
"hsts": null,
"probed": true,
"status": 200,
"reachable": true,
"redirect_host": null
},
"notes": "TLS certificate details are not inspected from Workers; https.reachable reflects a succ...",
"domain": "example.com",
"exists": true,
"sources": [
"DNS via Cloudflare DoH (cloudflare-dns.com)"
],
"mail_auth": {
"spf": {
"present": true,
"includes": [],
"all_qualifier": "-all",
"dns_lookup_terms": 0,
"multiple_records": false
},
"dmarc": {
"pct": 100,
"adkim": "s",
"policy": "reject",
"present": true,
"subdomain_policy": "reject"
},
"mta_sts": false,
"dkim_selectors_found": [
{}
],
"dkim_selectors_checked": [
"default"
]
},
"checked_at": "2026-10-22T09:01:19.207Z",
"provenance": {
"facts": [
{
"id": "domain.dns",
"fact": "example.com resolves in DNS; MX records published; SPF present; DMA...",
"limits": [
"One resolver and one vantage point; DNS can cha..."
],
"source": "DNS via Cloudflare DNS-over-HTTPS (cloudflare-dns.com)",
"source_url": "https://cloudflare-dns.com/dns-query?name=example.com",
"retrieved_at": "2026-10-24T10:27:22.153Z",
"source_as_of": null
}
],
"schema": "sg-provenance/1",
"evidence_only": true,
"data_timestamp": "2026-10-24T10:27:22.153Z"
}
},
"receipt": {
"v": 1,
"ts": "2026-10-22T09:00:00Z",
"sig": "hex",
"price": {
"asset": "USDC",
"amount": "3000",
"network": "eip155:84532"
},
"log_seq": 1,
"tx_hash": "0x..",
"evidence": {
"terms_hash": "<sha256>",
"validation": "input=pass;freshness=pass;output=pass;provenance=pass",
"terms_version": "<label>",
"data_timestamp": "2026-10-24T09:00:00Z",
"provenance_hash": "<sha256>",
"service_version": "<version>"
},
"endpoint_id": "whois-v1",
"request_hash": "hex",
"response_hash": "hex"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"queryParams": {
"type": "object",
"required": [
"domain"
],
"properties": {
"domain": {
"type": "string",
"pattern": "^[A-Za-z0-9.-]{3,253}$",
"description": "Registrable domain or full hostname"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"data",
"receipt"
],
"properties": {
"data": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"dns": {
"type": "object",
"properties": {
"a": {
"type": "array",
"items": {
"type": "string"
}
},
"mx": {
"type": "array",
"items": {
"type": "object"
}
},
"ns": {
"type": "array",
"items": {
"type": "string"
}
},
"caa": {
"type": "array",
"items": {}
},
"aaaa": {
"type": "array",
"items": {
"type": "string"
}
},
"txt_count": {
"type": "integer"
},
"dnssec_validated_answer": {
"type": "boolean"
}
}
},
"rdap": {
"type": "object",
"properties": {
"note": {
"type": "string"
},
"source": {
"type": "string"
},
"status": {
"type": "array",
"items": {
"type": "string"
}
},
"expires": {
"type": "string"
},
"available": {
"type": "boolean"
},
"registrar": {
"type": "string"
},
"registered": {
"type": "string"
},
"nameservers": {
"type": "array",
"items": {
"type": "string"
}
},
"last_changed": {
"type": "string"
},
"dnssec_signed": {
"type": "boolean"
},
"registered_domain": {
"type": "string"
},
"registrar_iana_id": {
"type": "string"
}
}
},
"https": {
"type": "object",
"properties": {
"hsts": {},
"probed": {
"type": "boolean"
},
"status": {
"type": "integer"
},
"reachable": {
"type": "boolean"
},
"redirect_host": {}
}
},
"notes": {
"type": "string"
},
"domain": {
"type": "string"
},
"exists": {
"type": "boolean"
},
"sources": {
"type": "array",
"items": {
"type": "string"
}
},
"mail_auth": {
"type": "object",
"properties": {
"spf": {
"type": "object"
},
"dmarc": {
"type": "object"
},
"mta_sts": {
"type": "boolean"
},
"tls_rpt": {
"type": "boolean"
},
"dkim_selectors_found": {
"type": "array",
"items": {
"type": "object"
}
},
"dkim_selectors_checked": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"checked_at": {
"type": "string"
},
"provenance": {
"type": "object",
"description": "Additive evidence block (sg-provenance/1): per-fact source, retrieval time, limits; no score or verdict. Full schema in OpenAPI."
}
},
"description": "Registry RDAP registrar, creation/expiry/update dates, status and nameservers, plus DNS and email-auth facts"
},
"receipt": {
"type": "object",
"required": [
"v",
"endpoint_id",
"ts",
"price",
"tx_hash",
"request_hash",
"response_hash",
"log_seq",
"sig"
],
"properties": {
"evidence": {
"type": "object",
"description": "Signed evidence (see llms.txt)"
}
},
"description": "Ed25519-signed receipt; verify free at POST /v1/verify-receipt. New receipts also carry a signed `evidence` object."
}
}
}
}
}
}
}
},
"params": {
"domain": "registrable or full hostname, e.g. example.com"
},
"source": "Registry data from public RDAP via the IANA bootstrap (Verisign for .com/.net), cached 24 h; live DNS (Cloudflare DoH). Alias of /v1/domain-facts",
"status": "https://api.stablecoingateways.com/status",
"receipts": "https://api.stablecoingateways.com/v1/verify-receipt",
"price_usd": "0.003",
"xrp_quote": {
"usd": "0.003",
"note": "XRP amount = ceil(USD / quote x 1e6 x (1+margin)); bound into the invoice MAC",
"age_s": 2,
"state": "fresh",
"source": "xrpl:amm XRP/RLUSD (RLUSD=1 USD) ledger 107917047",
"available": true,
"max_age_s": 900,
"quoted_at": "2026-10-26T14:29:05.928Z",
"xrp_drops": "2390",
"margin_pct": 3,
"usd_per_xrp": 1.293107
}
}Provenance
- Seen in the source catalog
- 2026-10-26 14:29Z
- Last indexed by Roundhouse
- 2026-10-26 17:20Z
- Last enriched (probe, favicon, geo)
- 2026-10-22 21:16Z
- x402 version
- 2
- Max timeout
- 600s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 4 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
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Using Roundhouse, look up the x402 service WHOIS RDAP Domain Lookup and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=WHOIS%20RDAP%20Domain%20Lookup' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://api.stablecoingateways.com/v1/whois, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.