# RDAP Domain Lookup

> RDAP Domain Lookup is a paid API for AI agents from x402-seller-0ay3.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns structured domain registration data (status, dates, registrar, name servers) for any domain name via the RDAP protocol through rdap.org

## Facts

- Endpoint: GET https://x402-seller-0ay3.onrender.com/api/rdap/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-lookup-6a50c87f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8uxzcY7wXpzrysEJ-9fkH

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-lookup-6a50c87f
```

Example prompt: Can you look up the RDAP registration info for stripe.com — I want to know who the registrar is, when it expires, and what status flags it has?

## When to prefer this

Choose this endpoint when you need structured, machine-readable domain registration metadata (registration/expiration dates, registrar, name servers, status flags) and want a reliable RDAP-protocol response rather than parsing legacy WHOIS text. Ideal for domain portfolio management, due-diligence workflows, security investigations, or any agent pipeline that needs authoritative registration data without maintaining RDAP client libraries or API keys.

## Known failure modes

- Domain not found in RDAP registry returns an error or empty result
- Invalid domain name format causes a bad request response
- RDAP registry for the TLD is unavailable or unresponsive, causing a timeout
- New or recently created domains may have incomplete RDAP records
- Some ccTLDs do not support RDAP and may return no data

## How this service works

RDAP domain lookup — status, registration/expiration dates, registrar, name servers (RDAP is the structured, successor protocol to WHOIS), via rdap.org. Parameter: ?domain=<domain name> (e.g. example.com).

## Output

A JSON object containing the queried domain name, its current status flags (e.g. 'client delete prohibited'), registration and expiration timestamps (ISO 8601), the registrar name, a list of name servers, the RDAP source URL (rdap.org), and a fetched_at timestamp indicating when the data was retrieved.

## 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 query (e.g. example.com)."
      }
     }
    }
   },
   "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",
  "events": {
   "expiration": "2027-08-13T04:00:00Z",
   "registration": "1995-08-14T04:00:00Z"
  },
  "source": "https://rdap.org",
  "status": [
   "client delete prohibited"
  ],
  "registrar": "Reserved-Internet Assigned Numbers Authority",
  "fetched_at": "2026-09-01T12:00:00.000Z",
  "nameservers": [
   "a.iana-servers.net"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rdap-domain-lookup-6a50c87f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-seller-0ay3.onrender.com](https://www.zero.xyz/host/x402-seller-0ay3.onrender.com/llms.txt)