# RDAP Domain Registration Lookup

> RDAP Domain Registration Lookup is a paid API for AI agents from api.aventtech.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Checks whether a domain name is registered or available and returns authoritative RDAP registry data including registrar, dates, nameservers, and status flags.

## Facts

- Endpoint: GET https://api.aventtech.com/lookup/domain
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rdap-domain-registration-lookup-82e3c2f3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_awVmCxpuBxbxcmDb5M1mS

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 rdap-domain-registration-lookup-82e3c2f3
```

Example prompt: Can you check if openaitools.io is registered or still available, and if it's taken, tell me the registrar, when it was created, when it expires, and its nameservers?

## When to prefer this

Use this endpoint when you need authoritative, real-time domain registration data from the official RDAP registry — more structured and reliable than legacy WHOIS. Ideal for checking domain availability, verifying ownership, auditing expiry dates, or gathering nameserver/registrar info for a specific domain.

## Known failure modes

- Domain not found / available — registry returns no record
- Invalid domain format — query param missing or malformed
- Registry timeout or RDAP service unavailable — upstream error
- TLD not supported by RDAP — some legacy or ccTLDs may lack RDAP coverage
- Rate limiting — too many requests in short succession

## How this service works

Unified digital experiences for Mega Yachts, Executive Spaces, and Luxury Residences. Athens-based, nationwide projects.

## Output

Returns whether the domain is registered or available, along with RDAP registry data: registrar name, creation date, expiry date, nameservers, and domain status flags (e.g. clientTransferProhibited, active).

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Domain name to check"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "domain": "example.com",
  "registrar": "ICANN",
  "expires_on": "2027-08-13",
  "registered": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rdap-domain-registration-lookup-82e3c2f3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.aventtech.com](https://www.zero.xyz/host/api.aventtech.com/llms.txt)