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.

Links

• Website: catchdoms.com
• API Docs: catchdoms.com/api/docs
• Pricing: catchdoms.com/pricing

License

MIT