CatchDoms — Expired Domains API

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

Tools

search_domains

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

Parameters:

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.

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:

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