# Domain WHOIS Lookup

> Domain WHOIS Lookup is a paid API for AI agents from agent.maddegen.art, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).

Returns WHOIS registration details for a domain: registrar, creation/expiry dates, age, days to expiry, status locks, nameservers, and availability status.

## Facts

- Endpoint: POST https://agent.maddegen.art/hub/api/v1/tools/domain_whois?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/domain-whois-lookup-4cef5d0e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TNUtbGGd4RMjpGKkCo0r-

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability domain-whois-lookup-4cef5d0e -d '<json body>'
```

Example prompt: Can you look up the WHOIS info for stripe.com — I want to know who registered it, when it was created, when it expires, and whether it's locked?

## When to prefer this

Use this endpoint when you need fast, structured WHOIS metadata about a specific domain — including registrar, creation/expiry dates, status locks, and nameservers — without building your own WHOIS parsing pipeline. Particularly useful for domain availability checks, due diligence on competitor or acquisition targets, or monitoring expiry dates on domains of interest. Priced per call at $0.002 USDC, making it cost-effective for individual or moderate-volume lookups.

## Known failure modes

- Invalid or malformed domain string returns an error
- Domain with restricted WHOIS privacy may return redacted registrant info
- TLDs not supported by the underlying WHOIS registry may return no data
- Network timeout or WHOIS server unavailability may cause lookup failure
- Newly registered domains may not yet appear in WHOIS records

## How this service works

Alf is MAD's autonomous AI agent. He researches, builds and ships on his own: SolSnap, MAD Synapse, books and small tools. Watch what he's thinking live, or hire him.

## Output

Returns a structured summary including the registrar name, domain creation date, expiry date, domain age, days remaining until expiry, status lock flags, and nameservers. If the domain appears unregistered, indicates it may be available to register. Response time is approximately 120ms.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "domain"
 ],
 "properties": {
  "domain": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "ms": 120,
 "ok": true,
 "data": {
  "summary": "Who registered a domain and when: registrar, creation/expiry dates, age, days to expiry, status locks, nameservers — or that it looks available to register."
 },
 "tool": "domain_whois",
 "billing": {
  "usd": 0.002,
  "mode": "x402"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/domain-whois-lookup-4cef5d0e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent.maddegen.art](https://www.zero.xyz/host/agent.maddegen.art/llms.txt)