API access

One Word Domains API

The Unique Domains API is built for teams that want search, one-domain lookup, filter metadata, TLD and sector catalogs, plus webhook-ready workspace automation.

AuthAPI keyFormatJSON over HTTPSPlanAPI accessLimits10k period + 1/s

Start free trial Request access

cURLComing soon

curl -X POST "/api/v1/domains" \
  -H "Authorization: Apikey YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "limit": 25,
    "rules": {
      "op": "AND",
      "rules": [
        { "filterId": "tld", "op": "IN",
          "value": [".com", ".ai"] },
        { "filterId": "price_range",
          "op": "<=", "value": 1500 }
      ]
    }
  }'

Quick start

Try for free

Download a Postman collection that calls the public demo endpoints with ?data=demo. Responses are explicitly marked as demo data.

Download Postman demo

Install (demo data)

Paste the integration prompt into your coding agent so it can inspect your codebase, create a typed client, and verify demo-mode responses marked with _meta.demo=true before you add a real key.

Integrate with real data

Use /api/v1 with an API key when you are ready to call private endpoints and production data.

Start free trial

Endpoint reference.

Endpoint descriptions, request and response examples, demo calls, and copy-paste snippets. Demo mode is public: append ?data=demo to any documented endpoint.

Basics

API keys, request behavior, search, and one-domain lookup.

GUIDEAuthenticationApikey header scheme

GUIDEAPI limitsPlan-based quotas + 1/s

POST/domainsSearch domains

POST/domains/statsSearch stats

GET/domains/{domainId}Get one domain

GET/domains/{domainId}/pricingRegistrar offers

GET/domains/{domainId}/technicalDNS + Whois

GET/domains/{domainId}/analysisBeta

Metadata

Discover the filter registry plus the TLD and sector catalogs used to drive search and browse surfaces.

GET/meta/filtersFilter registry

GET/meta/navigationTop TLDs + sectors

GET/meta/tldsTLD catalog

GET/meta/sectorsSector catalog

GET/stats/generalPlatform stats

WorkspaceComing soon

Planned workspace APIs for radars, watchlists, and holdings, plus webhook deliveries for downstream automation.

GET/radarsList radars

POST/radarsCreate radar

PATCH/radars/{radarId}Update radar

GET/watchlistsList watchlists

Continue with Unique Domains

API questions, answered.

Current availability, demo boundaries, and where API workflows connect to the product.

Is the public REST API available now?

Not yet. The customer-facing REST API is currently marked coming soon. The documentation and explicit demo responses remain available so teams can prepare an integration without treating sample data as live data.

Use live MCP access through Claude

Can I test responses without an API key?

Yes. Documented demo-capable endpoints accept ?data=demo and identify every response as demo data. Private live data still requires valid access when the API opens.

What can the API automate?

The documented contract covers structured search, domain evidence, metadata, public statistics, exports, and workspace objects. Coming-soon operations return an explicit error instead of simulated success.

See how structured Search works

Can I browse public domain data without an integration?

Yes. The public Screener and readiness-backed TLD, sector, and preset pages expose sanitized previews without an API key or private account data.

Explore the public one-word domain Screener

Ask AI about Unique Domains