The domain reseller API
you'll actually want to build on

Provision and manage domains, SSL, email hosting, and more through a single OpenAPI-spec compliant REST API.

OpenAPI-spec compliant 2,000+ TLDs OT&E sandbox environment EPP gateway available
TRUSTED BY INTEGRATORS AND PLATFORMS WORLDWIDE
plesk
EASYDMARC
SpamExperts
SSL
10,000+
RESELLERS
126+
COUNTRIES
4 MILLION
DOMAINS
20+ YEARS
IN BUSINESS

Skip to your stack

Tell us how you build. We'll jump you to the right details.

Your tools already know
how to talk to us

The Openprovider API is OpenAPI-spec compliant. Import the spec into Postman, auto-generate a typed client in any language, or let AI coding assistants read the spec and write the calls for you.

POSTMAN

Import in one click.

Every endpoint, pre-configured and ready to test. No manual setup, no copy-pasting auth headers.

AI-READY

Copilot & Cursor write the integration

Point your AI assistant at our spec and it writes working API calls on the first try. We tested it so you don't have to.

Coming soon CODEGEN

Typed clients, any language.

Generate a fully typed client in Go, Python, Node, or any language openapi-generator supports. No boilerplate to write.

Try a live-style call · sandbox simulated

Check a domain. See what comes back.

Type any domain. We'll show you the exact JSON response you'd get from a real /domains/check call.

No account needed. Switch the language tab to see the call in curl, Python, or Node.
curl
Python
Node.js
Response · 200 OK · 127ms
Multi-product

One integration.For every product.

Same authentication, same structure, same base URL, across every product we offer. Integrate once and you're done.

Domains

Register, renew, transfer. Bulk operations, DNS, DNSSEC, WHOIS. 2,000+ TLDs including ccTLDs and new gTLDs.

SSL certificates

Issue, renew, and manage SSL certificates with the same API call structure as domains. Same auth, same base URL.

Email hosting

Provision and manage hosted email accounts alongside your domains and SSL, all under the same integration.

Licenses & security

Plesk, EasyDMARC, and SpamExperts, assigned and managed through the same integration.

Who it's for

Built for how
resellers actually work

Build your own platform, or integrate directly at the registry level, the API adapts to your setup.

See what you won't get anywhere else

The most comprehensive reseller API on the market - more products, more TLDs, and the only one that's OpenAPI-spec compliant. See how we compare:

Openprovider
Other providers

Also under the hood

Auth

Bearer token - one login call per session

Sandbox

Full OT&E environment, isolated from production

Spec file

OpenAPI / Swagger JSON - Postman, Insomnia, AI tools

Coming soon

Domain operations,in plain English.

We're building an MCP (Model Context Protocol) server — so AI agents can interact with domain services using natural language. No manual API calls required.

"Check if venturestack.com is available and register it under account #4821"
"Renew all domains expiring in the next 30 days"
"Provision SSL for the domain we just registered"
From the integrators

How technical teams talk about the API.

Hosters, agencies, and SaaS builders running production workloads on Openprovider, in their words.

Kentivo
★★★★★

"With Openprovider, we can fully automate their services into our workflows, giving us more time for us to focus on our own core business. We also love their very attractive price points."

Mike van Pamelen
Mike van Pamelen
CEO of Kentivo
Managed hosting • automation-first stack
Lennmedia
★★★★★

"Openprovider brings everything together with a robust API and simple to use interface for domain management and SSL certificates. By doing so we don't have to deal with multiple parties, while still getting all benefits across the board."

Lennart Dreves
Lennart Dreves
CEO, Lennmedia
Domains + SSL through one integration
DevNomads
★★★★★

"The API is great. We can implement everything in our portal … domains aren't our core product in terms of revenue, but they're one of the most important. It's something we can just onpaid to Openprovider without having to think about it all too much."

Loek Geleijn
Loek Geleijn
Co-owner, DevNomads
~3,000 domains • 250 customers • 2-person team

Start building today.

Free reseller account. Full OT&E sandbox. No credit card required.

Cost-price domains unlocked with Membership

Frequently Asked Questions