Tool detail

whois

POSTs a domain name and returns its parsed whois record (registrar, creation/updated/expiry dates, name servers, status flags) plus the raw whois text.

Categories: Domains IP

Use when

look up whois registration details for a domain
check when a domain expires or who its registrar is
audit domain ownership before a deal

Not for

rejects IPv4/IPv6 input — hostnames only
may be a legacy route; not part of the site's current promoted product

Inputs

POST JSON body: { domain: string, RFC-style hostname } (required)

Admitted input schema

{
  "type": "object",
  "properties": {
    "domain": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "RFC-style hostname with TLD (4-253 chars). IPv4/IPv6 inputs rejected."
    }
  },
  "required": [
    "domain"
  ],
  "additionalProperties": false
}

Endpoint

Method: POST
URL: https://app.heinrichstech.com/v1/cdp/whois

Payment

Protocol: x402
Listed price: 0.01 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: POST https://app.heinrichstech.com/v1/cdp/whois
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z