AI Inference · x402 · early usage

Send up to 10 domain names and get back every DNS record type (A, AAAA, MX, CNAME, TXT,…

by dns-whois-lookup.underscoredone.com · discovered, not yet claimed by its owner · updated 2026-10-08

30d calls7

30d payers5

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Send up to 10 domain names and get back every DNS record type (A, AAAA, MX, CNAME, TXT, NS, PTR, SOA, SRV, CAA, NAPTR, DS, TLSA) plus the full WHOIS registration profile (registrar, dates, contacts, status, nameservers) for each one. URLs are accepted and automatically stripped down to the bare domain. Duplicate domains are quietly removed before processing. Results come back as one flat row per domain, ready to drop into a spreadsheet, database, or pipeline.

Tags: dns lookup · whois lookup · dns · whois · domain lookup · bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-08

Input example from Bazaar metadata

{
  "domains": [
    "onescales.com",
    "hillms.com",
    "underscore.com"
  ]
}

Output example

{
  "api_version": "1.0.0",
  "results": [
    {
      "checkedAt": "2026-06-15T01:45:08.607Z",
      "dns_a": "23.227.38.65",
      "dns_aaaa": "",
      "dns_caa": "",
      "dns_cname": "",
      "dns_ds": "",
      "dns_mx": "5 alt2.aspmx.l.google.com | 1 aspmx.l.google.com | 10 alt3.aspmx.l.google.com | 10 alt4.aspmx.l.google.com | 5 alt1.aspmx.l.google.com",
      "dns_naptr": "",
      "dns_ns": "carter.ns.cloudflare.com | bonnie.ns.cloudflare.com",
      "dns_ptr": "",
      "dns_soa": "mname=bonnie.ns.cloudflare.com rname=dns.cloudflare.com serial=2406862386 refresh=10000 retry=2400 expire=604800 minttl=1800",
      "dns_srv": "",
      "dns_tlsa": "",
      "dns_txt": "openai-domain-verification=dv-Y9cDXv64Bj8Z6h43mpki1rgt | v=spf1 include:_spf.google.com ~all",
      "domain": "onescales.com",
      "whois_admin_country": "",
      "whois_admin_email": "",
      "whois_admin_name": "",
      "whois_admin_org": "",
      "whois_created": "2022-10-11T10:20:28Z",
      "whois_expires": "2028-10-11T10:20:28Z",
      "whois_iana_id": "1910",
      "whois_nameservers": "bonnie.ns.cloudflare.com | carter.ns.cloudflare.com",
      "whois_registrant_address": "",
      "whois_registrant_country": "",
      "whois_registrant_name": "",
      "whois_registrant_org": "",
      "whois_registrant_phone": "",
      "whois_registrar": "Cloudflare, Inc.",
      "whois_registrar_abuse_email": "[email protected]",
      "whois_registrar_abuse_phone": "+1.6503198930",
      "whois_registrar_url": "http://www.cloudflare.com",
      "whois_status": "clientTransferProhibited",
      "whois_updated": "2023-02-13T02:38:06Z"
    }
  ]
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/27548.json for the price and payment options.
Pay. Call GET https://dns-whois-lookup.underscoredone.com/lookup. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.01 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Solana
Demand: 7 calls · 5 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.01	0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.01	8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "api_version": {
          "type": "string"
        },
        "results": {
          "items": {
            "type": "object"
          },
          "type": "array"
        }
      },
      "required": [
        "api_version",
        "results"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "api_version": "string",
    "results": [
      {}
    ]
  },
  "type": "string"
}

Examples

curl

curl "https://dns-whois-lookup.underscoredone.com/lookup"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://dns-whois-lookup.underscoredone.com/lookup");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://dns-whois-lookup.underscoredone.com/lookup")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: dns-whois-lookup.underscoredone.com
Endpoint: https://dns-whois-lookup.underscoredone.com/lookup
Machine-readable: /resources/27548.json