Developer portal
REST 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.
Already have a sandbox account? Sign in to your sandbox panel
.
.
.
POST
/rclub/domains
# Register a domain in one call
POST /rclub/domains
x-user-id: YOUR_X_USER_ID
x-api-key: YOUR_X_API_KEY
{ "domainName": "acme-studio.com",
"years": 1, "customerId": "…", "regContactId": "…" }
.
200 OK
"order_id" "…"
"status" "…"
"message" "…"
GET /rclub/domains/available
POST /rclub/customers
POST /rclub/contacts
Beyond domains? Hosting, email, SSL and other add-ons stay on the legacy HTTP API for now.
20+ years
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.
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.
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.
Coverage
The whole domain
lifecycle, one surface.
Every API endpoint needed to search, register, renew, transfer, and manage the domain lifecycle.
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
Create a sandbox account, grab your sandbox API key from your panel, and check a domain’s availability.
2
Create a customer and a contact. Registration hangs off both.
.
.
.
request
curl
$ curl -X GET "https://api.sandbox.resellerclub.com/v2\
/domains/available?domainName=mybrand-test-12345&tlds=com" \
-H "x-user-id: YOUR_X_USER_ID" \
-H "Authorization: ApiKey YOUR_API_KEY" \
-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.
Get started
Start building today.
Create a sandbox account, generate your API key, explore the documentation, and start building on the ResellerClub API.