Unstoppable Domains
Web3 domain name service providing REST APIs for resolving crypto domain names, managing NFT domains, reverse lookups, cross-chain address resolution, domain registration, and DNS management across 150+ TLDs on multiple blockchains.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Unstoppable Domains the way a machine reads it — 40 machine-readable artifacts across 33 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Unstoppable Domains scores 42.0/100 (thin), with a separate agent-readiness read of 48/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Unstoppable Domains
Each block below is one kind of artifact we hold for Unstoppable Domains. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 33
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Unstoppable Domains account API
Manage your account details
Unstoppable Domains AI Lander API
Generate, manage, and remove AI-powered landing pages for domains (requires authentication)
Unstoppable Domains Backorders API
Create and manage domain backorders, and browse expired or pending-delete domains.
Unstoppable Domains Cart API
Shopping cart management, payment methods, and checkout (requires authentication)
Unstoppable Domains contacts API
Create and manage ICANN-required contacts for domain registration. Contacts represent individuals or organizations associated with domain roles (owner, admin, tech, billing). Ne...
Unstoppable Domains DNS Management API
Manage DNS records, nameservers, and hosting configurations for owned domains (requires authentication)
Unstoppable Domains dns-records API
Create, read, update and delete DNS records for your domains. Also includes DNS metadata, nameserver management, and DNSSEC configuration.
Unstoppable Domains domain-contacts API
View and update the ICANN-required contacts (owner, admin, tech, billing) assigned to a specific domain.
Unstoppable Domains domain-flags API
View and manage domain flags that control behavior and security settings such as DNS resolution, transfer locks, WHOIS privacy, and more.
Unstoppable Domains domain-management API
Comprehensive domain updates — modify nameservers, DNSSEC, contacts, flags, and DNS records in a single request.
Unstoppable Domains domain_registration API
Domain details/availability lookups and registration.
Unstoppable Domains domain-search API
Search for domain availability and retrieve details for one or more domains. Use the `$expand` parameter to include registration details and flags in the response.
Unstoppable Domains domain-transfers API
Check transfer eligibility and retrieve authorization codes for transferring domains to another registrar.
Unstoppable Domains domains API
Manage your custody domains.
Unstoppable Domains external_domains API
Manage domains that are owned in external, self-custody wallets. The key difference between Custody and Self-Custody operations is that all Self-Custody operations require a sig...
Unstoppable Domains external_wallets API
Manage self-custody wallets to allow for management of self-custody domains. ## Verifying Self-Custody Wallets Before you can initiate self-custody operations, you must first [v...
Unstoppable Domains hosting API
Configure how your domains serve content on the web. Hosting configurations control what happens when someone visits your domain — whether it redirects to another URL or proxies...
Unstoppable Domains Leads API
Domain conversations and messaging between buyers and sellers (requires authentication)
Unstoppable Domains marketplace API
Browse and search the Unstoppable Domains secondary marketplace. Retrieve paginated listings of domains available for purchase from existing owners, with filtering by TLD and so...
Unstoppable Domains operations API
All asynchronous processes handled by the API are represented as Operations. This includes registering a domain, updating a domain's records, changing a domain's owner, returnin...
Unstoppable Domains Owner API
The Owner API from Unstoppable Domains — 1 operation(s) for owner.
Unstoppable Domains owners API
Search for owned domains
Unstoppable Domains Portfolio API
Manage owned domains (requires authentication)
Unstoppable Domains pricing API
Retrieve pricing information for domain registration, renewal, transfer, and restoration by domain name or TLD.
Unstoppable Domains Reverse API
The Reverse API from Unstoppable Domains — 2 operation(s) for reverse.
Unstoppable Domains Rpc Proxy API
The Rpc Proxy API from Unstoppable Domains — 2 operation(s) for rpc proxy.
Unstoppable Domains search API
Search for owned entities
Unstoppable Domains Session API
Generate authenticated browser URLs for account and checkout flows that require web handoff.
Unstoppable Domains Status API
The Status API from Unstoppable Domains — 2 operation(s) for status.
Unstoppable Domains suggestions API
Suggestions for finding available domains
Unstoppable Domains tlds API
Browse available top-level domains (TLDs), their details, and DNS security configuration.
Unstoppable Domains wallets API
Manage custody wallets used for storing and managing domains without any signature collection. These wallets provide the most streamlined way to interact with domains since the ...
Unstoppable Domains webhooks API
Manage webhooks used for asynchronous updates to your server. You can follow our getting started guide here: [Webhooks in the Partner API](https://docs.unstoppabledomains.com/do...
Scroll within the panel for all 33 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Unstoppable Domains Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Unstoppable Domains — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 1
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/unstoppable-domains · machine-readable index on apis.io