Domain Search MCP

Fast, local-first domain availability checks for MCP clients. Works with zero configuration using public RDAP/WHOIS, and optionally enriches results with registrar pricing via a backend you control.

🆕 v1.10.0: GoDaddy public endpoint integration! Enhanced fallback chain (RDAP → GoDaddy → WHOIS) with premium/auction domain detection. Circuit breaker pattern ensures resilience.

🤖 v1.9.0+: AI-powered domain suggestions work out of the box! No API keys needed - suggest_domains_smart uses our public fine-tuned Qwen 7B-DPO model. Plus: Redis distributed caching and /metrics endpoint for observability.

Built on the Model Context Protocol for Claude, Codex, VS Code, Cursor, Cline, and other MCP-compatible clients.

Features

| Feature | Description | |---------|-------------| | 🔍 Multi-TLD Search | Check one name across .com, .io, .dev, .ai and 500+ TLDs | | 📦 Bulk Check | Validate up to 100 domain names in a single call | | 💎 Premium Detection | Identify premium and auction domains via GoDaddy | | 🤖 AI Suggestions | Generate brandable names with fine-tuned Qwen 7B-DPO | | 💰 Price Comparison | Compare pricing across Porkbun, Namecheap | | 🌐 Social Handle Check | Verify username availability on GitHub, Twitter, etc. | | 🔌 Dual Transport | Works via stdio (Claude) or HTTP/SSE (ChatGPT Actions) | | ⚡ Zero Config | Works instantly - no API keys required for availability |

What It Does

• Check a single name across multiple TLDs.
• Bulk-check up to 100 names for one TLD.
• Compare registrar pricing (uses backend when configured).
• Suggest names and validate social handles.
• Detect premium/auction signals for search_domain.

How It Works

Availability and pricing are intentionally separated:

Availability Chain (zero-config):
┌─────────┐     ┌─────────┐     ┌─────────┐
│  RDAP   │ ──► │ GoDaddy │ ──► │  WHOIS  │
│ (fast)  │     │(premium)│     │(fallback│
└─────────┘     └─────────┘     └─────────┘

• Availability (default, no keys needed):
  • RDAP: Primary source - fast, unlimited, public registry data
  • GoDaddy: Secondary - adds premium/auction detection (30 req/min, circuit breaker protected)
  • WHOIS: Last resort fallback for edge cases
• Pricing (optional):
  • Recommended: PRICING_API_BASE_URL (backend with Porkbun keys)
  • Optional BYOK: Porkbun/Namecheap only when backend is not configured

This keeps the server zero-config while letting power users enable pricing.

Pricing Verification

Responses include price_check_url (registrar checkout/search link) and may include price_note when a price is estimated. Always verify the final price on the registrar checkout page before purchase.

If an auction/premium signal is detected, results include an aftermarket block with links to marketplace pages when available. Taken domains may include Sedo auction hints (public feed) and nameserver-based marketplace hints (Sedo/Dan/Afternic).

Quick Start

Option 1: npx (Recommended)

No installation needed - run directly:

npx -y domain-search-mcp@latest

Option 2: From Source

... [View full README on GitHub](https://github.com/dorukardahan/domain-search-mcp#readme)