CatchDoms — Expired Domains API & MCP Server

CatchDoms exposes an Expired Domains API and an MCP (Model Context Protocol) server that aggregate expired domains from 16 auction platforms (Dynadot, GoDaddy, DropCatch, SnapNames, Catched, Gname, BloomUp, UKBackorder, DomainLore, and 7 more) plus 100,000+ aged ccTLD domains available at registration price. Every domain is enriched with Trust Flow, Citation Flow, Domain Authority, backlinks count, referring domains, and Wayback history.

Use the REST API to integrate expired domain data into your tools, scripts, or pipelines. Use the MCP server to let Claude, Cursor, Windsurf, or any MCP-compatible AI assistant search expired domains conversationally — find drop-catches, check auction prices, and surface high-value aged domains programmatically.

Quick Start (Free — no API key needed)

Try it instantly — no signup required:

{
  "mcpServers": {
    "catchdoms": {
      "url": "https://catchdoms.com/mcp/catchdoms/free",
      "transport": "sse"
    }
  }
}

Free tier includes: Top 50 domains per search, first 10 names visible, basic SEO metrics. Trust Flow, Citation Flow, and GMB detection require Pro.

Pro (full access)

{
  "mcpServers": {
    "catchdoms": {
      "url": "https://catchdoms.com/mcp/catchdoms",
      "transport": "sse",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Get your API key: Sign up for free → API Settings → See pricing

Feature	Free	Pro	Authority
Domains per search	50	Unlimited	Unlimited
Visible domain names	10	All	All
Trust Flow / Citation Flow	Hidden	Yes	Yes
GMB detection	Hidden	Yes	Yes
`get_domain` tool	No	Yes	Yes
Aged domains (regfee, 100k+)	No	No	Yes
Rate limit	3 req/min	15 req/min	60 req/min

Tools

`search_domains`

Search for domains with filters. Returns up to 100 results sorted by quality.

Parameters:

Parameter	Type	Description
`source`	string	Filter by platform: `dynadot`, `catched`, `dropcatch`, `godaddy`, `gname`, `snapnames`, `ukdroplists`, `subreg`, `webexpire`, `parkio`, `bloomup`, `seodomains`, `nameshift`, `nicsell`, `gnews-domains`, `backorders-domains`, `regfree` (Authority only)
`tld`	string	Filter by TLD (`.com`, `.fr`, `.de`). Comma-separated for multiple.
`score_min`	integer	Minimum quality score (0-100). 50+ = good, 70+ = excellent.
`age_min`	integer	Minimum domain age in years (Wayback first snapshot).
`language`	string	Detected language code (`EN`, `FR`, `DE`, `ES`, etc.).
`contains`	string	Keyword the domain name must contain.
`has_bids`	boolean	Only domains with active auction bids.
`has_backlinks`	boolean	Only domains with referring domains.
`has_gmb`	boolean	Only domains with a Google Business listing.
`has_edu_gov`	boolean	Only domains with .edu or .gov backlinks.
`da_min`	integer	Minimum Domain Authority (0-100).
`rd_min`	integer	Minimum referring domains count.
`tf_min`	integer	Minimum Trust Flow (0-100).
`cf_min`	integer	Minimum Citation Flow (0-100).
`categories`	string	TTF topic categories, comma-separated (e.g., `Business,Health`).
`price_min`	number	Minimum price/bid (USD).
`price_max`	number	Maximum price/bid (USD).
`snapshots_min`	integer	Minimum Wayback Machine snapshots.
`limit`	integer	Results to return (1-100, default 50).

Example prompt:

Find me French .fr domains with a quality score above 50, at least 10 years old, under $500

`get_domain`

Get full details for a specific domain.

Parameter	Type	Description
`domain_id`	integer	Domain ID
`domain_name`	string	Domain name (e.g., `example.com`)

`list_filters`

Get available filter options with counts — sources, TLDs, and languages.

No parameters.

`get_stats`

Get platform statistics — total domains, new today, by source, SEO coverage.

No parameters.

Domain Sources

16 auction & marketplace sources, refreshed daily:

Source	Type
Dynadot	Closeouts (fixed $5-$30) + auctions
GoDaddy	Expiring auctions + closeouts
DropCatch	Auctions (Dropped, Pre-Release)
Catched	Auctions + backorder
Gname	Auctions + buy now
SnapNames	Pre-release + closeout
UK Backorder	UK dropping/expired
Subreg	Expiring auctions
WebExpire	French .fr auctions
Park.io	Premium auctions
BloomUp	French .fr auctions + buy now
SEO.Domains	Buy now with SEO metrics
NameShift	Premium buy-now / make offer
Nicsell	European ccTLD auctions (top-auktionen)
Gnews Domains	Hand-curated premium news domains, buy-now
Backorders Domains	Niche ccTLD auctions (.ie, .si, .paris, .tw, .ph, .mx…)

Authority-only: Regfee Database

100k+ aged ccTLD domains across 60+ TLDs (.fr, .de, .it, .co.uk, .nl, .id, .kz and dozens more) available at registration price. No auction, no bidding war. Same SEO enrichment (TF/CF/DA/backlinks/Wayback) on every entry. Use source=regfree from the MCP search_domains tool with an Authority API key.

SEO Metrics

Every domain is enriched with:

Quality Score (0-100) — composite score based on age, authority, backlinks, name quality
Domain Authority (0-100) — from DataForSEO
Trust Flow / Citation Flow (0-100) — from Majestic via SEObserver
TTF Topic — topical category (e.g., Business/Marketing)
Referring Domains — unique linking domains count
Backlinks — total backlink count
PageRank (0-10) — Open PageRank
Domain Age — from Wayback Machine first snapshot
Language — detected from archived content
Google Business — GMB listing detection

Response Format

Each domain includes:

{
  "id": 12345,
  "name": "example.fr",
  "tld": ".fr",
  "source": "webexpire",
  "type": "auction",
  "score": 72,
  "price": 150.00,
  "max_bid": 210.00,
  "bids_count": 4,
  "auction_end_date": "2026-04-07T15:00:00+00:00",
  "age": 19,
  "domain_authority": 28,
  "trust_flow": 22,
  "citation_flow": 16,
  "ttf_topic": "Business/Marketing",
  "referring_domains": 216,
  "backlinks_count": 2000,
  "language": "FR",
  "has_gmb": false,
  "purchase_url": "https://www.webexpire.com/...",
  "purchase_platform": "WebExpire"
}

REST API

CatchDoms also offers a REST API at https://catchdoms.com/api/domains. Full documentation.

License

MIT