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Startup Domain Check
x402
Startup Domain Check is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).
Checks whether a domain name is registered, retrieves its registrar, and returns its expiration date — useful for validating startup or product domain availability and ownership.
Price / call$0.002
Success—
StatusUnknown
How this service works
Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.
Output
Returns a JSON object with the domain name, whether it is registered (boolean), the registrar company name, and the expiration date in ISO format (e.g. 2027-10-01).
Example use cases
Startup name domain availability check
“I'm thinking of naming my startup 'Lumen' — can you check if lumen.io is already registered and who owns it?”
Domain expiry monitoring for portfolio
“Check when techventures.com expires and which registrar holds it — I want to know if it's coming up for renewal soon.”
Competitive research on rival domain
“Can you look up whether rivalstartup.com is registered and tell me the registrar and expiration date?”
Technical details
Endpoint
GEThttps://anibalb.duckdns.org/x402/startup-domain-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, no-account-required lookup of domain registration status, registrar identity, and expiration date — especially in startup or product-naming workflows where you want to verify availability or ownership without signing up for a WHOIS service. Ideal for AI agents that pay per call in USDC via x402 and need lightweight domain intelligence.
Side effects
- Domain not found or invalid TLD — may return registered: false or an error
- Network timeout if WHOIS upstream is slow
- Unsupported TLD where WHOIS data is unavailable
- Payment failure via x402 if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "myapp.com",
"registrar": "Namecheap",
"expiration": "2027-10-01",
"registered": true
}
}Tags
x402
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