Why can't I just split the domain by dots?

Because TLDs like .co.uk, .com.br, and .org.au have multiple parts. Splitting by dots would incorrectly identify the root domain. The PSL has 9,000+ entries.

Does it handle cloud provider domains?

Yes. Domains like *.amazonaws.com, *.azurewebsites.net, and *.cloudfront.net are in the PSL and handled correctly.

Can I pass a full URL with protocol and path?

Yes. The engine automatically strips the protocol (http/https), path, and query parameters before parsing.

Public Suffix Extractor MCP Connector for Claude

Extract the true root domain, TLD, and subdomain from any URL using the official Mozilla Public Suffix List.

1 tools Official Updated Jun 28, 2026 Official Vinkius Partner

More Details Connect to Claude

When an analytics agent processes URLs, it cannot guess that in app.vinkius.co.uk the TLD is .co.uk (not .uk). This MCP uses the official Mozilla Public Suffix List to fragment hostnames with 100% accuracy.

The Superpowers

Official List: Uses the same Public Suffix List maintained by Mozilla and used by every major browser.
Complex TLDs: Correctly handles .co.uk, .com.br, .org.au, .amazonaws.com, and 9,000+ other suffixes.

url-parsingtld-extractiondomain-analysisdata-normalizationbrowser-standards

Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_LmUqJapaOSRBG8u0znMC3iVKUNjgZCM8mbyDzszm/mcp

② Claude Code (terminal)

claude mcp add --transport http public-suffix-extractor https://edge.vinkius.com/vk_preview_LmUqJapaOSRBG8u0znMC3iVKUNjgZCM8mbyDzszm/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "public-suffix-extractor": {
      "url": "https://edge.vinkius.com/vk_preview_LmUqJapaOSRBG8u0znMC3iVKUNjgZCM8mbyDzszm/mcp"
    }
  }
}

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