Why LETO API
A domain API built for resellers
Price, coverage, speed and simplicity — everything you need to resell.
Wholesale pricing among the lowest
Maximize your margin. Our .kr-specialist registrar infrastructure, passed through at wholesale.
300+ TLDs, one integration
From .kr and .co.kr to .com, .net and .io — register, transfer and renew through a single API.
Real-time automation
Synchronous responses for availability, registration, WHOIS and nameservers.
Integrate in 10 minutes
Authenticate with two headers. Start instantly with the official JS SDK and Postman collection.
Capabilities
Every domain operation, via API
Everything you'd do in a console, programmatically.
Availability check
Check domain availability and pricing in real time.
Domain registration
Register instantly with contact and term.
Inbound transfer
From auth-code verification to initiating and tracking transfers.
Renewal & auto-renew
Renewals, renewal history and scheduled renewals.
WHOIS lookup
Registration details and expiry in a normalized shape.
Nameservers & DNSSEC
Manage nameservers, DNSSEC and domain locks.
Developer experience
First call in two lines
The official SDK handles auth, retries and types for you.
npm install @feather-it/partner-sdkimport { LetoClient } from '@feather-it/partner-sdk'
const leto = new LetoClient({
tenantId: process.env.LETO_TENANT_ID,
serviceToken: process.env.LETO_SERVICE_TOKEN,
})
// 1. 등록 가능 여부 + 가격 확인
const result = await leto.domains.check('example.kr')
// 2. 도메인 등록
const domain = await leto.domains.register({
name: 'example.kr',
years: 1,
contactId: 'ct_...',
})
// 3. WHOIS 조회
const whois = await leto.domains.whois('example.kr')Wholesale pricing
The more you resell, the cheaper it gets
No setup fees — volume-based wholesale rates.
Exact per-TLD wholesale rates are shared based on contract terms. See our public retail prices on the pricing page.
FAQ
About the domain API
After contacting sales and completing partner onboarding, you receive a tenant ID and service token. Put both in your request headers and you can call the API right away.
300+ TLDs through a single API, including Korean domains like .kr and .co.kr as well as .com, .net, .org and .io.
Wholesale rates are set by TLD and monthly volume, targeting the lowest in the market. Exact rate sheets are shared when you contact sales.
Yes — an official JavaScript SDK (@feather-it/partner-sdk), a Postman collection and a REST reference.
Yes. The API is globally accessible with English docs. It's a reseller API with particular strength in Korean (.kr) domains.
Get started
The cheapest way to sell domains
Integrate one wholesale API and start reselling domains.