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Domain Checker MCP Server

@unitythemaker

リポジトリ

基本情報

カテゴリ

その他

ライセンス

MIT license

トランスポート

stdio

作者

unitythemaker

Domain Checker MCP Server について

MCP server for checking domain availability using RDAP and WHOIS with support for bulk checking multiple domains in parallel.

#domain-checker#domain-availability#mcp-server

Domain Checker MCP Server の設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "domain-checker": {
      "command": "npx",
      "args": [
        "-y",
        "domain-checker-mcp"
      ]
    }
  }
}

Domain Checker MCP Server のツール

4

Check if a domain is available for registration

Check availability of multiple domains in parallel

Check availability of a single name with multiple extensions

Check availability of multiple names with multiple extensions

概要

What is Domain Checker MCP?

An MCP (Model Context Protocol) server that checks domain availability using RDAP (Registration Data Access Protocol) with WHOIS fallback.

How to use Domain Checker MCP?

Install globally from npm (npm install -g domain-checker-mcp) or from source, then run pnpm start. Configure your MCP client with the domain-checker server using either the npx command or a direct path to the built index.js. Four tools are available: check_domain, check_domains_batch, check_name_extensions, and check_names_extensions, each with optional parameters for concurrency and raw response inclusion.

Key features of Domain Checker MCP

  • Checks single domain availability
  • Batch checks multiple domains in parallel
  • Prioritizes RDAP with WHOIS fallback
  • Configurable parallel workers (default 4)
  • Retry with exponential backoff for rate limits
  • Detects statuses: available, taken, unknown, rate_limited
  • Extracts registrar, expiration, and days until expiration
  • Raw RDAP/WHOIS data excluded by default for speed

Use cases of Domain Checker MCP

  • Verify if a domain is available for registration
  • Batch check many domains at once for inventory or analysis
  • Check a name across multiple TLDs (e.g., .com, .net, .org)
  • Monitor domain expiration dates for renewals
  • Integrate domain lookup capabilities into MCP-powered assistants

よくある質問

1

How do I configure Domain Checker MCP in my client?

Add the server to your MCP client configuration JSON using either the npx command (`npx -y domain-checker-mcp`) or a local path to the built index.js.

2

What tools does Domain Checker MCP provide?

Four tools: `check_domain` (single domain), `check_domains_batch` (multiple domains), `check_name_extensions` (one name across multiple extensions), and `check_names_extensions` (multiple names across multiple extensions). All accept an optional `includeRawResponse` parameter.

3

How can I include raw RDAP/WHOIS data in responses?

Set `includeRawResponse` to `true` (default is `false`). Raw responses are automatically included for suspicious cases (unknown status, rate limits, errors).

4

What is the default concurrency for batch checks?

The default concurrency is 4 parallel workers, configurable between 1 and 10.

5

How does Domain Checker MCP handle domain lookups?

It prioritizes RDAP and falls back to WHOIS when RDAP is unavailable. It also uses a retry mechanism with exponential backoff for rate‑limited responses.

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