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Resellers & gTLD Partners →

Automate With Our
User API

Search, register, manage, and sell domains programmatically. Full registrar and marketplace access through a RESTful API with OAuth 2.0 and API key authentication.

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Domain API | Unstoppable Domains

Every Tool You Need
For Automated Management

Domain Search & Registration

Search availability, check pricing, register across 150+ TLDs programmatically.

DNS & Record Management

Create, update, delete DNS records. Manage nameservers and hosting.

Marketplace Listings

Create, update, cancel listings. Set BIN pricing, make-offer, LTO terms via API.

Cart & Checkout

Build custom purchase flows. Add domains to cart, apply payments, complete checkout.

Portfolio Management

Manage in bulk. Push domains, update auto-renewal, tag and organize.

Webhooks & Events

Real-time notifications for domain events, offers, and transaction completions.

Start Building Today

Start Building Today

Automate domain registration, management, and marketplace operations with our RESTful API.

Get an API KeyRead the Docs

Plus, Everything You Want From A Marketplace

$7.99 .com Regs & Transfers*

Reg .coms for $7.99. Plus at-& below-cost pricing, Domainer Club discounts, and 3% fees. See pricing.

Afternic & Sedo Fast Transfer

List once to list everywhere with 650+ SedoMLS resellers. You can also list at Unstoppable without transferring. List now.

AI Assistant, API, & MCP

Connect ChatGPT, Claude, or custom tools to search, register, list, and manage domains with natural language. Get started.

Reseller & Affiliate API

Sell domains and more on your site without building in management or payments. Learn More.

Self-Brokerage Via

Add your contact info to your landers and use our built-in chat to drive your own negotiations. LTO, BIN, Make Offer, and Message Seller options. See example.

Bring Your Own Lead For 3%

We handle secure payments, escrow, and up to 10-year LTO installments. You can push or transfer at any registrar. Try it.

Frequently Asked Questions

The Unstoppable Domains API is a RESTful interface that lets you search, register, manage, and sell domains programmatically. It provides full access to registrar and marketplace functionality. If you need a white-label integration, we also have a Reseller API.
The API supports OAuth 2.0 for user-context operations and API keys for server-to-server integrations. You can generate API keys from your Account Settings.
Yes. The API supports webhooks that deliver real-time notifications for domain events, offers, sales, and transaction completions to your specified endpoint.
Yes. You can search availability, check pricing, register domains, manage DNS, create marketplace listings, and handle cart operations — all in bulk through the API.
Yes. The API is free to use. You only pay standard domain registration, renewal, and marketplace transaction fees for the operations you perform.