Cloudflare revamps domain search and lets AI agents register domains via API, MCP and CLI

What Cloudflare announced

In a blog post published on September 30, 2026 and written by Ankit Shah and Carlos Armada, Cloudflare said that Cloudflare Registrar, launched ten years ago, has always offered domains at cost, with transparent pricing and no unnecessary upselling. A registrar is a company you buy and renew a domain name (a website address such as example.com) through. Cloudflare said it now wants to extend the same simplicity to the stage of finding a domain. It announced a new domain search that shows every extension it supports, responds in real time as you type, and offers sorting and filtering.

According to Cloudflare, the old search page showed only about 20 available results from a subset of extensions, and sometimes modified the user's search term to offer related suggestions. The new version shows the exact term the user typed across all supported extensions, keeps loading results as you scroll, and includes domains that are already registered; users who only want to see purchasable domains can filter out the rest. Cloudflare also said the experience is the same whether or not you are logged in, and on mobile or desktop.

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AI agents can handle domains too: API, MCP and CLI

Cloudflare said it launched the Registrar API in beta in April this year. An API is an interface that lets software, rather than a person clicking on a website, search, check and register domains. Since then Cloudflare has added three capabilities: a sandbox, a practice environment for testing flows without buying a domain or triggering a real transaction; an extension information endpoint that returns details for each of the 420+ extensions it supports, helping handle the differing requirements of each registry (the organisation that runs a given extension); and transfers, which let domains be moved programmatically from other registrars to Cloudflare.

Cloudflare said the Registrar API is available through Cloudflare MCP, a way for AI agents to connect to outside tools, so agents need no separate integration. The cf CLI, a command-line tool announced earlier the same week, brings the same capabilities to the terminal. In Cloudflare's words, users can simply ask their preferred AI agent to check whether a domain is available, or to buy or transfer it.

How it works technically: multi-source evidence and incremental updates

Cloudflare said a single search can generate more than 420 separate availability checks, with each extension's authoritative answer coming from its own registry. Querying every registry at once would be slow and wasteful, since registries respond at different speeds and impose request limits. Cloudflare therefore said its search gathers evidence from three kinds of sources: pre-built availability datasets (such as zone files, the bulk records registries publish) and cached answers, DNS responses (DNS is the Internet's address book that points a domain to a server), and live registry lookups, balancing speed, freshness and certainty.

Cloudflare also acknowledged the limits of each type of evidence: a hit in a dataset or DNS shows a domain is in use, but a miss does not necessarily mean it can be registered, since a domain may be registered without DNS configured, or may be on a blocked list. Live registry lookups are the freshest and most authoritative, but they are slower and consume limited upstream capacity.

• Workers: according to Cloudflare, the service that handles the public search entry point and collects availability evidence.
• Durable Objects: provide a coordinator for each in-progress search, remembering the best current evidence for each domain and tracking which results the user is currently viewing.
• Workers KV: stores availability datasets converted from sources such as zone files, reusable across searches.
• WebSockets: send an initial list of results first, then only the fields that change; Cloudflare said stronger evidence can replace the current answer, while weaker evidence cannot.
• Another Worker: can query DNS via Cloudflare's 1.1.1.1 resolver, perform live lookups or reuse cached results; "available" answers are cached for a shorter time, because a domain could be registered by someone else at any moment.

Cloudflare describes this search experience as "among the fastest in the world," but that is Cloudflare's own claim, and the post provides no independent test data.

Pricing display: registration and renewal prices side by side

Cloudflare said the new search and a newly launched pricing page show both the first-year registration price and the renewal price for each domain; where a discount applies, the original at-cost price is shown struck through alongside the discounted price. Cloudflare also said that, starting with this week's Birthday Week, it is offering first-year registration discounts on some extensions, including .io, .dev, .app and .tech. This article does not comment on whether the prices are high or low, nor does it recommend readers buy.

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