--- title: "Expired Domain API, MCP Server and Webhooks" description: "Build on hunter.domains: a REST API for vetted expired domains, an MCP server for Claude, ChatGPT and Cursor, and signed webhooks. Works on the free plan." url: https://hunter.domains/docs language: en --- # Build on the daily hunt Every day we scan about two million expiring domains and keep the few with clean history and real authority. The API, the MCP server and webhooks put that list inside your own tools. ## Three ways in **[REST API](https://hunter.domains/docs/api).** JSON over HTTPS with an API key. Pull the live list with filters, read the full report of a domain, order a report for any domain, manage alert rules and run registry lookups. One `curl` gets you started. **[MCP server](https://hunter.domains/docs/mcp).** Connect Claude, ChatGPT, Cursor or any MCP client to `https://hunter.domains/mcp` and ask in plain words: "find me a clean gardening domain under $100". The assistant searches the list, reads the reports and explains what it found. There is also a free server at `https://hunter.domains/mcp/free` that needs no account. **[Webhooks](https://hunter.domains/docs/webhooks).** When a new domain matches one of your alert rules, we send a signed POST to your endpoint within about a minute. Send it on to Slack, a spreadsheet, an n8n flow or a script that places the backorder. ## What you get The data is the same data the site shows, not a raw feed: - **Vetted domains only.** Every domain on the list has passed an authority pre-filter, a link-network and blacklist check, and a review of its Wayback Machine history. Domains with gambling, pharma or adult spam, or signs of a takeover, never reach it. - **A score and the reasons behind it.** A 0–100 Hunter score with its breakdown, Ahrefs Domain Rating, Majestic Trust Flow and Citation Flow, referring domains, archive years and every risk flag. - **Three lists.** The live list (auctions and pending drops that have not ended), Available now (dropped and unregistered, re-checked against the registry every two hours) and the archive. - **The revival kit.** The old site's most archived URLs with Wayback links and the archived text, so you know which pages to rebuild. - **Reports on demand.** The same report for any domain you name, listed or not, in about two minutes. - **Registry lookups.** RDAP registration data with a drop-date estimate, bulk availability, DNS records and Domain Rating. ## Quick start 1. [Create a free account](https://hunter.domains/register) and confirm your email address. 2. Open [API in your account](https://hunter.domains/account/api) and create a key. It is shown once. 3. Make a request: ``` curl "https://hunter.domains/api/v1/domains?min_dr=30" \ -H "Authorization: Bearer hd_…" ``` ``` { "data": [ { "domain": "example.org", "tld": "org", "status": "listed", "score": 78, "verdict": "ok", "flags": [], "topic": "Home", "language": "en", "title": "Seasonal planting guides for small gardens", "metrics": { "domain_rating": 46, "referring_domains": 412, "archive_years": 17, "archive_first_year": 2006, "archive_last_year": 2025, "trust_flow": 28, "citation_flow": 31 }, "listing": { "source": "godaddy", "type": "bid", "price_usd": 25, "bids": 3, "ends_at": "2026-10-09T17:30:00Z", "url": "https://auctions.godaddy.com/trpItemListing.aspx?domain=example.org" }, "found_at": "2026-10-06T16:42:10Z", "open": true, "detail": "full", "report_url": "https://hunter.domains/domain/example.org" } ], "meta": { "list": "live", "total": 5, "page": 1, "per_page": 25, "pages": 1, "plan": "free", "locked": 57, "locked_note": "57 more matching domains are on the Pro list.", "upgrade_url": "https://hunter.domains/pricing" } } ``` `meta.locked` says how many more domains match on the Pro list. The [API guide](https://hunter.domains/docs/api) covers every endpoint. ## Plans and limits The API follows your plan. A key sees exactly what your account sees on the site. | | Free | Pro | | --- | --- | --- | | Requests | 30 a minute, 1,000 a day | 120 a minute, 20,000 a day | | Live list | The day's 5 open domains | Every domain, by name | | Available now | — | Yes | | Archive | Yes | Yes | | Detailed report and revival kit | Open domains | Every domain | | Alert rules | — | 10 rules | | Webhooks | — | 3 endpoints | | Domain checks | First one free, then packs of 10 | 30 a month included | | Registry, DNS and DR lookups | 200 domains an hour | 600 domains an hour | | MCP server | Yes | Yes | Pro is $9.99 a month, or $5.99 a month billed yearly. See [pricing](https://hunter.domains/pricing). ## Fair use Build tools for yourself, your team and your clients. Do not republish the list or resell the data as a feed or a competing service, and do not share one account's key between unrelated people; the [terms](https://hunter.domains/terms) have the details. Metrics such as Domain Rating and Trust Flow belong to their providers and are shown for evaluation. ## Frequently asked questions ### Is the expired domain API free? Yes, on the free plan. A free key returns the day's 5 open domains with their full reports, the whole archive, the registry, DNS and Domain Rating lookups, and one free domain check. The full list by name, Available now, alert rules and webhooks are part of Pro. ### Do I need a separate API subscription? No. There is no separate API plan and no per-request price. The API, the MCP server and webhooks are part of the plan you already have. ### Is there an SDK? Not yet. The API is plain JSON over HTTPS, and the [OpenAPI file](https://hunter.domains/api/v1/openapi.json) describes every endpoint, so you can generate a client for your language or hand the file to a coding assistant. ### Can an AI assistant use it without me writing code? Yes. Add the [MCP server](https://hunter.domains/docs/mcp) to Claude, ChatGPT or Cursor and the assistant calls the same functions for you. ### How fresh is the data? The scan runs once a day and each domain is published the moment its review finishes. Prices, bids and end times are refreshed with every scan; the Available now list is re-checked against the registries every two hours. ### Where do I report a problem? Write to [hello@hunter.domains](mailto:hello@hunter.domains). Include the request and the `code` of the error you received. Updated: 6 October 2026 ## Get a key, make your first request A free account can create API keys and connect the MCP server to an assistant. No card needed. [Create a free account](https://hunter.domains/register) ## Don't miss the next good domain. Set your rule and leave the rest to us. You hear the moment a matching domain is found. [Get started free](https://hunter.domains/register)