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Early access

Domain availability API

One call answers what a naming tool or AI agent actually needs: is the name free right now (live registry RDAP, not a cached zone file), what it costs to register, how strong it is as a brand, what it is worth, and where it is for sale if someone already owns it. The same engine already serves thousands of checks a month to Claude and ChatGPT through our MCP server.

Request

curl https://www.domhaul.com/api/v1/check \
  -H "Authorization: Bearer $DOMHAUL_KEY" \
  -d '{"domains": ["brewlog.app", "brewlog.com"], "include": ["value"]}'
  • + Live availability on every TLD with a public registry lookup, ccTLDs like .co.uk and .ch included
  • + Registration price you can actually charge, not a list price
  • + Market value from a model trained on 3M+ historical sales
  • + Aftermarket listings for taken names, with the asking price where the marketplace publishes one
  • + JSON over HTTPS, bulk requests, no SDK required

Response

{
  "results": [
    {
      "domain": "brewlog.app",
      "available": true,
      "price_usd": 14.20,
      "brandability": 71,
      "value": { "marketplace_usd": 420, "source": "humbleworth" }
    },
    {
      "domain": "brewlog.com",
      "available": false,
      "registrar": "GoDaddy.com, LLC",
      "listings": [{ "marketplace": "afternic", "price_usd": 2995 }]
    }
  ]
}

Plans

The API opens to the waitlist first. Pick the plan you would use; no card is needed to join, and nothing is charged before your key works.

Free

$0/month

100 checks a day

  • + Availability (live RDAP)
  • + Registration price
  • + Brandability score

Starter

$19/month

10,000 checks a month

  • + Everything in Free
  • + Bulk: 50 names per request
  • + Email support

Pro

$79/month

100,000 checks a month

  • + Everything in Starter
  • + Market valuations (3M+ sales model), 10,000 a month
  • + Aftermarket listings and asking prices for taken names
  • + Social handle availability on 11 platforms

Scale

$249/month

1,000,000 checks a month

  • + Everything in Pro
  • + Bulk: 500 names per request
  • + 50,000 valuations a month
  • + Priority support and an uptime SLA

Want it inside an AI assistant instead? The MCP server is free and needs no key.