CatchDoms Expired Domains API & MCP Server

CatchDoms exposes an Expired Domains API and an MCP (Model Context Protocol) server that aggregate 27 sources: 26 auction and marketplace platforms (Dynadot, GoDaddy, DropCatch, SnapNames, Catched, Gname, Namecheap, NameSilo, Porkbun, Sedo, BloomUp, UKDroplists, DomainLore, Rakko, and the official CZ.NIC, WHC.ca, Internet.ee and Aftermarket.pl registries) plus an aged ccTLD database of 180k+ 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

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.

search_pending_delete_domains

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

Example prompt:

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

Domain Sources

26 auction and marketplace sources, refreshed daily. Row counts are live measurements taken in production on 2026-11-10:

Authority: aged ccTLD database (regfree)

183,214 aged ccTLD domains across 106 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. The server requires at least one narrowing filter alongside it, with a non-zero value (tld, score_min, contains, language, age_min, da_min, rd_min, tf_min, cf_min, categories, snapshots_min, has_backlinks, has_edu_gov, has_gmb): score_min=0 or da_min=0 does not count. The result set is capped at 5,000 rows.

Authority+: weekly pending-delete inventory

437,634 domains carry a predicted drop date still ahead, across 143 ccTLDs and gTLDs, refreshed weekly (175,636 rows in the batch of 2026-11-09). 866,049 more are classified but have no computable date yet, and the default view returns both, 1,303,683 rows in all; rows whose predicted date has already passed are hidden unless you ask for them. 12 weekly snapshots are retained, 2,142,061 rows in total. Every row is WHOIS-classified (pendingDelete, redemptionPeriod, serverHold, clientHold, transition, quarantine), and the predicted dates that exist fall 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