# Maxwell x402 RDAP Domain Lookup

> Maxwell x402 RDAP Domain Lookup is a paid API for AI agents from api.maxwellinternational.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-01).

Performs a live RDAP lookup for a domain name, returning registration status, registrar, dates, nameservers, and status flags — but never personal contact data.

## Facts

- Endpoint: GET https://api.maxwellinternational.ai/v1/rdap/domain?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/maxwell-x402-rdap-domain-lookup-e5f626a4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uIslostxkNTm9d_2iiDJ8

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 maxwell-x402-rdap-domain-lookup-e5f626a4
```

Example prompt: Can you check whether innovatech.io is registered, and if so tell me the registrar, when it was created, when it expires, and its current status flags?

## When to prefer this

Use this endpoint when you need authoritative, live domain registration data sourced directly from the registry's own RDAP server — more reliable and up-to-date than third-party WHOIS aggregators. Prefer it over generic WHOIS tools when you need structured data (registrar, dates, nameservers, status flags) without personal contact details, or when building automations that check domain availability, audit expiries, or enrich domain metadata at $0.005 per call.

## Known failure modes

- TLD does not support RDAP (rdapAvailable:false returned, still billed) — e.g. .de registry
- Domain not found / unregistered (registered:false returned, still billed)
- Malformed or syntactically invalid domain name causes a 400 error
- Registry timeout or temporary RDAP server unavailability causes a 503
- Payment not provided or invalid x402 payment header causes a 402 response

## How this service works

Domain registration record, looked up live from the registry's own RDAP server: whether it is registered, registrar, status flags, created / updated / expiry dates, nameservers, and which registry answered. No personal contact data. Every lookup is an answer and is charged: "not registered" (registered:false) and "this registry offers no RDAP service" (rdapAvailable:false, e.g. .de) included.

## Output

Returns a JSON object with: whether the domain is registered (registered: true/false), registrar name, domain status flags (e.g. clientTransferProhibited), creation/updated/expiry timestamps, list of nameservers, the registry that answered, and whether RDAP service is available for that TLD (rdapAvailable: true/false). Returns registered:false for unregistered domains and rdapAvailable:false for TLDs like .de that don't offer RDAP — both still count as answered calls and are billed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/maxwell-x402-rdap-domain-lookup-e5f626a4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.maxwellinternational.ai](https://www.zero.xyz/host/api.maxwellinternational.ai/llms.txt)