CatchDoms — Expired Domains API & MCP Server

CatchDoms exposes an Expired Domains API and an MCP (Model Context Protocol) server that aggregate 22 sources: 21 auction and marketplace platforms (Dynadot, GoDaddy, DropCatch, SnapNames, Catched, Gname, Namecheap, NameSilo, Sedo, BloomUp, UKDroplists, DomainLore, Rakko, and more) plus an aged ccTLD database of 183,537 domains available at registration price. Authority+ adds a weekly pending-delete inventory of domains about to drop. 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	Authority+
Domains per search	50	Unlimited	Unlimited	Unlimited
Visible domain names	10	All	All	All
Trust Flow / Citation Flow	Hidden	Yes	Yes	Yes
GMB detection	Hidden	Yes	Yes	Yes
get_domain tool	No	Yes	Yes	Yes
Aged ccTLD domains (regfree, 183,537)	No	No	Yes	Yes
search_pending_delete_domains tool	No	No	No	Yes
MCP rate limit	3 req/min	15 req/min	15 req/min	15 req/min
REST API rate limit	n/a	15 req/min	60 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, namesilo, namecheap, sedo, nicsell, gnews-domains, backorders-domains, domainlore, rakkodomain, regfree (Authority subscription required), namepros (brandable marketplace)
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.

search_pending_delete_domains

Authority+ only. Search the weekly pending-delete inventory: domains about to drop, WHOIS-classified, with a predicted drop date.

Parameter	Type	Description
tld	string	Filter by TLD (fr, de, com). With or without the dot. Comma-separated for multiple.
whois_status	string	Comma-separated: pendingDelete, redemptionPeriod, serverHold, clientHold, transition, quarantine.
pipeline_source	string	oi-diff (ccTLDs, weekly) or czds-daily (gTLDs, daily).
week_end	string	Snapshot week (YYYY-MM-DD, a Monday) or all for the combined view. Default all.
drops_within_days	integer	Only rows dropping within N days (1-60).
contains	string	Substring the domain name must contain (case-insensitive).
no_hyphens	boolean	Exclude second-level domains containing a hyphen.
no_digits	boolean	Exclude second-level domains containing a digit.
include_past_drops	boolean	Include rows whose drop date has already passed. Default false.
limit	integer	Results to return (1-100, default 50). For pagination use the REST API at /api/pending-delete.

Example prompt:

Which .io domains drop in the next 10 days, no hyphens, no digits?

Domain Sources

21 auction and 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
Namecheap	Marketplace auctions with pre-filled Ahrefs DR, Majestic TF/CF, Estibot valuation
NameSilo	Registrar expired-domain auctions
Sedo	Expiring domains
UKDroplists	UK dropping/expired
DomainLore	UK auctions (Spotlight, Hidden Gems, SEO)
Subreg	Expiring auctions + closeouts
WebExpire	French .fr auctions
BloomUp	French .fr auctions + buy now
Park.io	Premium auctions
Nicsell	European ccTLD auctions (top-auktionen)
Rakko	Japanese expired marketplace with pre-filled DR/DA/TF/CF
SEO.Domains	Buy now with SEO metrics
NameShift	Premium buy-now / make offer
Gnews Domains	Hand-curated premium news domains, buy-now
Backorders Domains	Niche ccTLD auctions (.ie, .si, .tw, .ph, .mx…)

Authority: aged ccTLD database (regfree)

183,537 aged ccTLD domains across 84 country extensions (.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.

Authority+: weekly pending-delete inventory

205,679 actionable domains in the latest weekly batch, across 144+ ccTLDs and gTLDs, WHOIS-classified (pendingDelete, redemptionPeriod, serverHold, clientHold, transition, quarantine) with predicted drop dates 5 to 45 days out. ccTLDs come from a weekly OpenINTEL snapshot, gTLDs from a daily feed. Use the search_pending_delete_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
• TTF Topic — topical category (e.g., Business/Marketing)
• Referring Domains — unique linking domains count
• Backlinks — total backlink count
• 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": "2027-01-15T15:00:00+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, plus https://catchdoms.com/api/pending-delete for the Authority+ inventory. Full documentation and an OpenAPI spec.

Links

• Website: catchdoms.com
• API Docs: catchdoms.com/docs
• OpenAPI spec: catchdoms.com/openapi.json
• Pricing: catchdoms.com/pricing

License

MIT