MCP server

Public Suffix List

io.github.pipeworx-io/public-suffix-list

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Public Suffix List MCP.

From the maker's README Public Suffix List MCP — the Mozilla-maintained catalog of effective TLDs (e.g. co.uk, s3.amazonaws.com, github.io). Used by browsers to decide cookie-domain boundaries. Keyless; cached 24h in-pack. Source

Website Source

At a glance

Type

MCP server

Publisher

pipeworx.io (verified by the MCP Registry)

Status

Working at last check

Tools

46

Token cost

About 26,555 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http public-suffix-list https://gateway.pipeworx.io/public-suffix-list/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.public-suffix-list]
url = "https://gateway.pipeworx.io/public-suffix-list/mcp"

Gemini CLI

{"mcpServers":{"public-suffix-list":{"httpUrl":"https://gateway.pipeworx.io/public-suffix-list/mcp"}}}

Cursor

{"mcpServers":{"public-suffix-list":{"url":"https://gateway.pipeworx.io/public-suffix-list/mcp"}}}

VS Code

{"servers":{"public-suffix-list":{"type":"http","url":"https://gateway.pipeworx.io/public-suffix-list/mcp"}}}

Antigravity

agy mcp add public-suffix-list https://gateway.pipeworx.io/public-suffix-list/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"public-suffix-list","server_url":"https://gateway.pipeworx.io/public-suffix-list/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"public-suffix-list","server_url":"https://gateway.pipeworx.io/public-suffix-list/mcp"}

Tools

• list_version ~38 tokens
  Last refresh + rule count.
• parse ~77 tokens
  Split a domain into (subdomain, registrable_domain, public_suffix).
• public_suffix ~65 tokens
  Just the public suffix.
• registrable_domain ~72 tokens
  Domain + nearest suffix (the "site").

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