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Foundry Domain Availability Check
x402
Foundry Domain Availability Check is a paid API for AI agents from minty-sprout.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-01).
Checks whether a domain name is registered or available using RDAP protocol
Price / call$0.001
Success—
StatusUnknown
How this service works
Domain availability check via RDAP: is a domain registered or free. Input: a domain.
Output
Returns a JSON object indicating whether the domain is available (true/false), whether it is registered (true/false), the domain queried, the data source (RDAP), and an optional note — for example, 'No registration record found; confirm with a registrar before buying.' when the domain appears unregistered.
Example use cases
Startup domain name research
“I'm starting a company called NovaSpark — can you check if novaspark.com is available to register?”
Pre-purchase domain validation
“Before I reach out to a domain broker, can you tell me whether quantumleap.ai is currently registered or still free?”
Bulk idea screening for new brand
“I have a few domain ideas for my new app — can you check if pitchperfect.io is available?”
Technical details
Endpoint
POSThttps://minty-sprout.onrender.com/v1/domain-availability?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, programmatic check of whether a specific domain is registered or free, without needing full WHOIS data. It's ideal for pre-purchase screening, startup name validation, or agent workflows that need to filter domain candidates. Prefer it over full WHOIS lookups when you only need availability status and want a clean boolean result. For deeper DNS record inspection, use the sibling DNS lookup endpoint instead.
Side effects
- Domain format invalid — malformed input may return an error or unexpected result
- RDAP registry unavailable for certain TLDs — some obscure TLDs may not have RDAP support, leading to inconclusive results
- Network timeout — the RDAP query may time out for slow registries
- False negatives — a domain may appear available via RDAP but actually be reserved or pending deletion at the registrar level
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | A domain |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "No registration record found; confirm with a registrar before buying.",
"domain": "example-unregistered-name-123.com",
"source": "RDAP",
"available": true,
"registered": false
}
}Tags
x402
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