PaidRegistrar Prices API

List cheapest prices

GET/prices/cheapestMember key

The cheapest registrar per ending for up to 100 endings.

Lowest first year, renewal and transfer-in among the nine, in the order asked; an unpriced ending answers its row with nulls.

AccessA member key (Founder or Investor) or a paid RapidAPI subscription to this API.

BillingOne call.

FormatsJSON

Keep a key on a server: a page a visitor loads shows it to everyone.

Connect on RapidAPIAlso inDomain Price Comparison API

Request

tldsstringRequiredQuery

Comma-separated bare endings, 1 to 100, duplicates folded.

fieldsstringOptionalQuery

Comma-separated top-level keys to keep; an unknown key answers 400 unsupported_field.

curl -X GET "https://api.unique.domains/v1/prices/cheapest?tlds=ai%2Cio" \
  -H "Authorization: Bearer YOUR_MEMBER_KEY"

const response = await fetch("https://api.unique.domains/v1/prices/cheapest?tlds=ai%2Cio", {
    method: "GET",
    headers: {
        "Authorization": "Bearer YOUR_MEMBER_KEY",
    },
});

const data = await response.json();
console.log(data);

import requests

response = requests.get(
    "https://api.unique.domains/v1/prices/cheapest?tlds=ai%2Cio",
    headers={
        "Authorization": "Bearer YOUR_MEMBER_KEY",
    },
)

print(response.json())

req, err := http.NewRequest("GET", "https://api.unique.domains/v1/prices/cheapest?tlds=ai%2Cio", nil)
if err != nil {
    panic(err)
}
req.Header.Set("Authorization", "Bearer YOUR_MEMBER_KEY")

res, err := http.DefaultClient.Do(req)

$ch = curl_init();
curl_setopt_array($ch, [
    CURLOPT_URL => "https://api.unique.domains/v1/prices/cheapest?tlds=ai%2Cio",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => "GET",
    CURLOPT_HTTPHEADER => [
        "Authorization: Bearer YOUR_MEMBER_KEY",
    ],
]);
$response = curl_exec($ch);

uri = URI("https://api.unique.domains/v1/prices/cheapest?tlds=ai%2Cio")
request = Net::HTTP::Get.new(uri)
request["Authorization"] = "Bearer YOUR_MEMBER_KEY"

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }

Response

endingstring

cheapestYear1object

cheapestRenewalobject

cheapestTransferobject

trapboolean

Errors

keyed_only403

A paid subscription is required

rate_limited429

Too many requests

internal500

Unexpected error

not_ready503

Not ready yet

200 · application/jsonExample

{
  "data": [
    {
      "ending": "ai",
      "cheapestYear1": {
        "registrar": "porkbun",
        "price": 71.4
      },
      "cheapestRenewal": {
        "registrar": "porkbun",
        "price": 71.4
      },
      "cheapestTransfer": {
        "registrar": "cloudflare",
        "price": 80
      },
      "trap": false
    }
  ],
  "meta": {
    "asOf": "2026-11-05T08:00:00Z",
    "cursor": null,
    "limit": null
  },
  "links": {
    "self": "https://api.unique.domains/v1/prices/cheapest?tlds=ai%2Cio",
    "next": null,
    "register": null,
    "product": null,
    "dataset": null
  }
}

List cheapest prices

Request

Response

Errors

Related endpoints