Domain Availability Checker API

Free public REST API for the Domain Availability Checker on Domainee. No API key, CORS-enabled, rate-limited per IP.

GEThttps://api.domainee.dev/v1/tools/domain-availability-checker?name=mybrand&tlds=com

Check availability of a name across one or more TLDs. Uses DNS + RDAP fallback. Returns per-TLD availability with caveats (registrar lock, premium, etc.) where known.

Free. No API key required. CORS-enabled. Rate-limited per IP at 30/min and 500/day.

Parameters

Name	In	Type	Description
`name`required	query	`string`	The bare name (without TLD), e.g. `mybrand`. example: `mybrand`
`tlds`	query	`string`	Optional repeatable parameter: `?tlds=com&tlds=io&tlds=dev`. Defaults to a standard SaaS set when omitted. example: `com`

Example request

curl

curl -s "https://api.domainee.dev/v1/tools/domain-availability-checker?name=mybrand&tlds=com&tlds=io&tlds=dev" | jq

Example response

response.json

{
  "ok": true,
  "data": {
    "name": "mybrand",
    "results": [
      {
        "tld": "com",
        "available": false
      },
      {
        "tld": "io",
        "available": true
      },
      {
        "tld": "dev",
        "available": true
      }
    ]
  }
}

Other languages

fetch.js

const res = await fetch("https://api.domainee.dev/v1/tools/domain-availability-checker?name=mybrand&tlds=com");
const { ok, data } = await res.json();

requests.py

import requests
r = requests.get(
    "https://api.domainee.dev/v1/tools/domain-availability-checker",
    params={"name":"mybrand","tlds":"com"},
)
data = r.json()["data"]

Rate limits & errors

30 requests/minute and 500 requests/day per IP. Exceeding either returns HTTP 429 with a Retry-After header.
All responses are JSON with the envelope { "ok": true, "data": {...} } on success or { "ok": false, "error": { "code", "message" } } on failure.
code values are stable; safe to switch on programmatically. message is human-friendly and may change.