Checkout is its own grant, separate from searching and from reading your portfolio. Grant search and portfolio read and the assistant can research names all day without ever being able to spend money — which is the setup most people actually want first.
A remote server at https://api.unstoppabledomains.com/mcp/v1 that puts the Unstoppable Domains User API in front of an assistant: domain search, portfolio, DNS, cart and checkout, marketplace listings and buyer conversations.
- ud_domains_search checks availability and pricing across the TLDs you name; ud_tld_list says which are supported
- ud_portfolio_list filters by name, status, registry type, expiry window and length
- DNS records and nameservers: add, update, remove, list, and switch between default and custom nameservers
- Cart and checkout: add a domain, a listed domain or a renewal, read payment methods, and complete the purchase
- Marketplace: create, update and cancel listings, respond to offers, and read leads and buyer messages
- Backorders on expiring names, and generated landing pages for domains you are selling
An Unstoppable Domains account. OAuth is the recommended path and its grants are separate — domain search, portfolio read, portfolio write, cart read, cart write and checkout. An MCP API key from the Advanced tab of Account Settings is the alternative, sent as a bearer token. Some clients ask you to approve every action; loosening that is a setting, and it means the assistant acts with less confirmation.
One command plus a key — claude mcp add --transport http unstoppable-domains https://api.unstoppabledomains.com/mcp/v1, then supply credentials