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Vextorium Domain Availability Checker
x402
Vextorium Domain Availability Checker is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-28).
Checks whether up to 20 domains are registered or free using official RDAP services, returning creation/expiry dates, registrar, and status for each domain.
Price / call$0.004
Success—
StatusUnknown
How this service works
558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.
Output
Returns a JSON object listing which domains are available (free array), total queried count, and per-domain results including status (registered/available), creation date, expiry date, registrar name, and RDAP domain states. Some ccTLDs without public RDAP are reported as unknown.
Example use cases
Brand name domain research
“I'm launching a new product called NovaSpark — can you check if novaspark.com, novaspark.io, novaspark.net, and novaspark.co are available or already taken?”
Domain expiry monitoring for acquisition
“Check the registration details for premiumdomain.com — I need to know when it expires and who the registrar is so I can plan to acquire it.”
Bulk domain availability sweep
“I have a list of 10 domain names I'm considering for my startup: brightpath.com, brightpath.io, brightpath.app, brightpath.co, getbrightpath.com, getbrightpath.io, trybrightpath.com, trybrightpath.net, usbrightpath.com, hebrightpath.com — can you tell me which ones are free and which are registered?”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/domain-availability?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative domain availability data sourced directly from each registry's official RDAP service (not third-party WHOIS aggregators), especially for batch checks of up to 20 domains at once. Prefer it when you also need registration metadata like creation date, expiry date, registrar identity, and domain status flags alongside availability. Not ideal for ccTLDs that lack public RDAP (e.g. .es, .de).
Side effects
- More than 20 domains submitted — request rejected
- Country-code TLDs without public RDAP (e.g. .es, .de) reported as 'unknown' rather than definitive status
- Network timeout reaching a specific registry's RDAP endpoint
- Malformed domain name input causes parsing error
- RDAP registry temporarily unavailable for a specific TLD
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| names | array | Domains (1-20) |
Output
Schema · Response
{
"type": "json",
"example": {
"free": [
"estedominionoexiste98765.com"
],
"source": "Official RDAP of each registry (IANA bootstrap)",
"queried": 2,
"results": [
{
"high": "2026-09-27",
"domain": "vextorium.com",
"states": [
"client delete prohibited",
"client transfer prohibited"
],
"status": "registered",
"expires": "2027-09-27",
"registrar": "Porkbun LLC"
},
{
"domain": "estedominionoexiste98765.com",
"status": "available"
}
]
}
}Tags
x402
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