# Grey Ridge Signals — WHOIS Domain Lookup

> Grey Ridge Signals — WHOIS Domain Lookup is a paid API for AI agents from x402-data-api.sigrunner.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-28).

Returns WHOIS registration data for a domain, including registrar, creation date, expiry, status flags, and registrant information.

## Facts

- Endpoint: GET https://x402-data-api.sigrunner.workers.dev/whois?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/grey-ridge-signals-whois-domain-lookup-ef303b9c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_U08B3y_FZfR-8_sFoTgH6

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 grey-ridge-signals-whois-domain-lookup-ef303b9c
```

Example prompt: Can you look up the WHOIS record for example.com and tell me who the registrar is, when it was created, and when it expires?

## When to prefer this

Use this endpoint when an agent needs WHOIS registration metadata for a domain — registrar, dates, status flags — without setting up an account or API key, paying only $0.01 USDC inline via x402. Prefer over traditional WHOIS APIs when operating in a crypto-native, accountless agent environment on Base.

## Known failure modes

- Domain not found or unregistered — returns null or empty result
- Invalid domain format in query — may return error
- WHOIS privacy shielding — registrant field returns null
- Rate limits or upstream WHOIS provider timeouts
- TLD not supported by the underlying WHOIS service

## How this service works

Pay-per-call market & on-chain data for Base trading agents over x402: live DeFi yields, cross-venue funding rates, token prices, Polymarket and RPC data — plus a pre-trade token-safety gate (GO/HOLD/BLOCK). No account, no API key; agents pay inline in USDC from $0.001/call.

## Output

A JSON object containing the domain name, registrar name, creation date, expiry date, current status flags (e.g. client delete prohibited), and registrant information (may be null if redacted for privacy).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "domain": "example.com",
  "expiry": "2025-08-13T04:00:00Z",
  "status": [
   "client delete prohibited"
  ],
  "created": "1995-08-14T04:00:00Z",
  "registrar": "RESERVED-Internet Assigned Numbers Authority",
  "registrant": null
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/grey-ridge-signals-whois-domain-lookup-ef303b9c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-data-api.sigrunner.workers.dev](https://www.zero.xyz/host/x402-data-api.sigrunner.workers.dev/llms.txt)