4ai – premium .ai domains
판매 중인 프리미엄 .ai 도메인 254개를 검색하고, 무료 .ai 가치 추정치와 실제 .ai 판매 데이터를 확인하세요. 읽기 전용이며 API 키가 필요하지 않습니다.
호스팅형 MCP 서버
npx add-mcp 'https://4ai.ai/mcp'Claude Code, Codex, Cursor 등에 설치됩니다
문서
4ai for AI agents & developers
Let AI assistants and apps find premium.ai domains for your users. 4ai offers an MCP server, open JSON data, an OpenAPI description and embeddable widgets. Free, read-only, no API key.
MCP server
Connect any MCP client (streamable HTTP) to:
https://4ai.ai/mcp
Tools:
- suggest_domains: describe a project in plain words ("telehealth app for mental health") and get the best-fitting.ai domains, each with the reason it fits.
- search_domains: filter by word, category, type and length.
- similar_domains: alternatives to any.ai name, for example one that is taken.
- get_domain: details, offer link and comparable sales for one domain.
- compare_domains: 2 to 5 names side by side, with estimated value ranges.
- get_offer_link: a link to the offer form with the amount and a note filled in. Nothing is sent; the buyer checks and sends the offer.
- how_buying_works: steps, Escrow.com payment, fees and transfer time.
- estimate_domain_value: free value estimate for any.ai name.
- list_categories and ai_domain_sales: categories and publicly reported.ai sales.
Every domain result includes an offer link, so the assistant can send the user straight to buying.
In Claude, add it as a custom connector (Settings → Connectors → Add custom connector) with the URL above. Other MCP-capable assistants and agent frameworks accept the same URL.
Listed in the official MCP Registry as ai.4ai/domains.
Open data
- /data/domains.json: all 255 domains for sale, with categories, type, what each is good for and offer links.
- /data/ai-domain-sales.json and CSV: publicly reported.ai sales with sources.
- Registrations and Anguilla.ai revenue (CSV).
- /api/suggest?q=<project> and ?similar=<name.ai>: best-fitting domains for a project, or alternatives to a name (JSON).
- /openapi.json: OpenAPI 3.1 description, usable for GPT actions and tool calling.
- /llms.txt and /llms-full.txt: plain-text summaries for language models.
The data is free to reuse under CC BY 4.0 with a link to 4ai.ai.
Deep links
- Name ideas for a keyword: /ai-domain-name-generator/?q=health
- Comparable sales for a name: /ai-domain-value-estimator/?q=agent.ai
- A domain page with offer form:
/domains/<name>-ai/#make-offer - The same form with an amount and note filled in:
/domains/<name>-ai/?offer=5000¬e=…#make-offer(minimum $3,000; the buyer sends it) - Domains for a project description: /ai-domains-for-sale/?q=telehealth app