Developer portalREST API

Build domain experiences. Own the customer journey.One simple API.

Search, register, renew, transfer, and manage domains through one REST API while ResellerClub runs the registrar infrastructure.

Create a sandbox account View documentation
Already have a sandbox account? Sign in to your sandbox panel
GET /v2/domains/available POST /v2/customers POST /v2/contacts
POST/v2/domains
# Register a domain in one call
POST /v2/domains
Authorization: ApiKey YOUR_API_KEY
X-User-Id: YOUR_USER_ID
{ "domainName": "acme-studio.com",
"years": 1, "customerId": "…", "regContactId": "…" }
200 OK
"orderId": "…"
"status": "…"
"message": "…"
Beyond domains? Hosting, email, SSL and other add-ons stay on the legacy HTTP API for now. View legacy docs
20+
Years as a domain reseller platform.
18M+
Domains under management.
500+
TLDs available.
100,000+
Resellers on OrderBox.
Who builds on it

Trusted by the platforms your customers already use.

ResellerClub has been an outstanding partner to Readdy, consistently providing reliable services and excellent support. We truly value the trust and confidence they have earned from our team. We look forward to deepening our partnership and working together to help even more Readdy customers achieve success.
Readdy.ai
Readdy.ai
Resellerclub has been a reliable technology partner for our domain business. Their APIs are robust, and the support provided by our Technical Account Manager has been exceptional. From onboarding to troubleshooting and ongoing guidance, the team has consistently delivered timely and effective assistance.
DotPe
We’ve had a great experience working with ResellerClub over the years. The API has been reliable and straightforward to integrate, making domain registration and management easy to incorporate into our platform. We’ve also really appreciated the support from their team whenever we’ve needed assistance.
HostArmada
Coverage

The whole domain lifecycle, one surface.

Every API endpoint needed to search, register, renew, transfer, and manage the domain lifecycle.

Domain lifecycle: a track runs left to right through four stages - an availability check, registration, management showing nameserver rows and a contact card, and renewal - with the domain yourbrand.store and a privacy padlock on the track between registration and management. A return arc curves back underneath from renewal to the start.
Domains Contacts Customers Orders Billing DNS Domain Forward Actions Products Resellers Country
What you get

Built the way you already build.

For developers familiar with modern REST APIs: clean JSON, predictable endpoints, and documentation you can test before you build.

One clean REST API

Predictable REST endpoints described with OpenAPI specifications. Consistent resource models make it easy to integrate and automate provisioning.

Header authentication

Authenticate using API keys. Secure every request with standard authorization headers.

Separate sandbox

Build and test safely using isolated API credentials, domains, and provisioning workflows before going live.

Quickstart

Go from sandbox to your first API request in minutes.

  1. 1Create a sandbox account, grab your sandbox API key from your panel, and check a domain's availability.
  2. 2Create a customer and a contact. Registration hangs off both.
  3. 3Register the domain, then poll its action status until it completes.
Read the quickstart
terminal curl 
$ curl -X GET "https://api.sandbox.resellerclub.com\
/v2/domains/available?domainName=mybrand-test-12345&tlds=com" \
    -H "Authorization: ApiKey YOUR_API_KEY" \
    -H "X-User-Id: YOUR_USER_ID" \
    -H "Accept: application/json"
On the roadmap SDKs, signed webhooks, idempotency keys and MCP support for AI agents are planned for a later phase. Follow the documentation for what ships next.

Migrating an existing domain portfolio?

Whether you are replacing another registrar API or migrating domains from another provider, our team can help you plan authentication, endpoint mapping, transfer workflows, and testing.

Contact Us
Get started

Start building today.

Create a sandbox account, generate your API key, explore the documentation, and start building on the ResellerClub API.

Create a sandbox account Become a reseller