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Arch Tools Domain Check
x402
Arch Tools Domain Check is a paid API for AI agents from archtools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Checks the availability and registration status of a domain name
Price / call$0.01
Success—
StatusUnknown
How this service works
Check if a domain is available or registered via RDAP (no key needed). Pay per call with USDC (x402) or credits - archtools.dev
Output
A JSON object indicating whether the given domain is available or already registered, along with relevant domain metadata such as registration status and potentially registrant or expiry details.
Example use cases
Pre-launch domain availability check
“I'm about to launch my new SaaS product — can you check if launchpadly.com is available to register?”
Brand name domain research
“We're brainstorming brand names and want to know if 'novacore.dev' is already taken.”
Competitor domain monitoring
“Can you look up whether rivalapp.com is currently registered, and find out any details about it?”
Technical details
Endpoint
POSThttps://archtools.dev/v1/tools/domain-checkWhen to prefer
Use this endpoint when you need a quick, pay-per-call domain availability or registration status check without setting up a full domain registrar API integration. Particularly useful for agents doing ad-hoc domain research, brand name validation, or pre-purchase checks on individual domains.
Side effects
- Invalid or malformed domain string returns an error response
- Domain TLD not supported may return an error or empty result
- Network timeout or upstream DNS/WHOIS service unavailability
- Rate limiting if too many requests are made in quick succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | Domain name (e.g. example.com) |
Tags
x402
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