# Saylor Innovations RDAP Domain Lookup

> Saylor Innovations RDAP Domain Lookup is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Returns RDAP-based registration facts for any domain: registrar, creation/expiry/last-change dates, domain age, status codes, nameservers, and DNSSEC info

## Facts

- Endpoint: GET https://saylorinnovations.com/api/domain/rdap/:domain?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-rdap-domain-lookup-dc5979f7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JHmVh6AHY_ZN_7FaxBWfC

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 saylor-innovations-rdap-domain-lookup-dc5979f7
```

Example prompt: Can you pull the RDAP registration details for openai.com — I want to know who the registrar is, when it was created, when it expires, and whether DNSSEC is enabled?

## When to prefer this

Choose this endpoint when you need structured, machine-readable registration metadata (registrar, dates, nameservers, DNSSEC, status codes) for any domain via the modern RDAP protocol. Prefer it over raw WHOIS scraping for consistent, parseable JSON output. Ideal for domain vetting, expiry monitoring, security research, and data enrichment pipelines that operate per-domain at low cost.

## Known failure modes

- Domain not found in RDAP registry — returns error or empty result for unregistered or ccTLD domains with limited RDAP coverage
- Invalid domain format — malformed domain strings return a validation error
- Registry timeout — upstream RDAP registry may be slow or unreachable, causing latency or failure
- Rate limiting — excessive calls may be throttled
- Newly registered domains may have incomplete or delayed RDAP data

## How this service works

Domain registration facts via RDAP - registrar, creation, expiry and last-change dates, domain age, status codes, nameservers and DNSSEC for any domain

## Output

Returns structured RDAP data for the queried domain including: registrar name, registration creation date, expiry date, last-changed date, computed domain age, domain status codes (e.g. clientTransferProhibited), nameserver hostnames, and DNSSEC configuration status.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-rdap-domain-lookup-dc5979f7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)