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WHOIS / domain registration

Registrar, registration and expiry dates, status and nameservers of a domain. 1 live · 1 in the catalog.

FreeWHOIS: who registered a domain and when (RDAP)Free with any account
ProviderPriceStatus
WHOIS: who registered a domain and when (RDAP)RDAP (WHOIS)FreeLive

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Questions

Which WHOIS / domain registration API is cheapest?

RDAP (WHOIS) is free with any Superpowers account.

Is there a free WHOIS / domain registration API?

Yes. RDAP (WHOIS) is free with any Superpowers account; you only need a key.

How do I call a WHOIS / domain registration API from an AI agent?

Connect your agent once: paste the message from superpowers.tools/docs into Claude, ChatGPT or Codex. Then ask in your own words, and your agent picks this provider and runs it. You pay only when a call works, and new accounts get $5 free. Developers can call POST /v1/run with "tool": "rdap.whois" or use the MCP server.

For developersAPI call and the shared input and output format

Call it with one API key: POST /v1/run with "tool": "rdap.whois", or through the MCP server. Every provider takes the same input and returns the same output, and failed calls are not charged.

Input

{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "domain"
  ],
  "properties": {
    "domain": {
      "type": "string",
      "minLength": 3,
      "maxLength": 253,
      "description": "Domain name, e.g. github.com (a URL also works)"
    }
  }
}

Normalized output

{
  "domain": "",
  "registered": true,
  "registrar": {
    "name": "",
    "iana_id": "",
    "url": ""
  },
  "created": "",
  "expires": "",
  "updated": "",
  "status": [
    ""
  ],
  "nameservers": [
    ""
  ],
  "dnssec": false
}