WHOIS MCP Server - install, status & alternatives [2026]

01 · Install WHOIS

before you install - you'll need

Set WHOIS_REDIS_ADDR, WHOIS_BOOTSTRAP_INTERVAL, WHOIS_AUTH_KEYS before connecting.

Claude Code

claude mcp add kincaidyang-whois --transport http https://whois.ddnsip.cn/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "kincaidyang-whois": {
      "url": "https://whois.ddnsip.cn/mcp"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://whois.ddnsip.cn/mcp

transport: streamable-http

endpoint alive - responded to MCP initialize · probed 2026-08-25

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as remote - your agent's requests go to whois.ddnsip.cn

endpoint auth accepted our unauthenticated MCP initialize - no credentials needed to connect

license MIT - declared in the repository

registry namespace io.github.KincaidYang is GitHub-verified and matches the repo owner

03 · What WHOIS can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v1.3.0 · 2026-08-22

安全：构建改用 Go 1.27.0（原 1.26.5）。govulncheck 实证 1.26.5 构建出的二进制有五条可达的标准库公告，全部在 1.26.6 修复并带进 1.27.0：GO-2026-6089（net/http 对明文 HTTP/2 探测没有应用 ReadHeaderTimeout，客户端可以把连接按住超过头部超时，本服务的 ListenAndServe 可达）、GO-2026-6218（net/url…

v1.2.0 · 2026-07-26

新增：纯内存模式 - - redis.addr 留空即彻底禁用 Redis，不建客户端、不尝试连接、/health 报 memory 后端。此前留空会去连隐式的 localhost:6379 再失败回退。WHOIS_REDIS_ADDR 区分「未设置」（沿用配置文件）与「显式为空」（禁用 Redis），容器部署不挂配置文件也能用；cache.requireRedis: true 配空地址属自相矛盾，启动即报错 · 修复：TLD 既无…

v1.1.0 · 2026-07-11

新增 linux/loong64（龙芯 LoongArch，新世界 ABI）预编译二进制 · 内置 IANA 服务器列表全量刷新：对全部 1437 个根区 TLD 逐一核实，收录 Tucows 系迁移 registry.click、中国 gTLD 整合 zdns.cn/rdap.ngtld.cn、.link/.music 等注册局变更，新增 .merck，RDAP 补 RIPE 三个新 ASN 段 · 安全：Go 1.26.5…

04 · Who maintains WHOIS

WHOIS is maintained by kincaidyang. It's the only MCP server we track from this author; the repo dates to Sep 2023.

05 · Facts

repository: github.com/kincaidyang/whois
website: https://github.com/KincaidYang/whois
category: cloud infrastructure - ranked #86 of 141 actively-maintained cloud infrastructure servers as of 2026-08-25.
release cadence: 8 releases in the last 90 days (latest 2026-08-22)
registry: io.github.KincaidYang/whois (active, first published 2026-07-11 · 3 versions)

06 · WHOIS FAQ

What is WHOIS?

基于 Golang 实现的域名 Whois 查询工具，支持所有允许公开查询的 TLD 后缀的域名、IPv4/v6、ASN 的 Whois 信息查询。根据 ICANN 《通用顶级域名注册数据临时政策细则（Temporary Specification for gTLD Registration Data）》和欧盟《通用数据保护条例》合规要求，在查询域名信息时，程序只返回了部分必要的信息（详见下方返回结果示例），不会返回所有者的联系方式、地址、电话、邮箱等字段。. It is available as a remote MCP endpoint.

Is WHOIS still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-22 and it shipped 8 releases in the last 90 days. We re-verify nightly.

How do I install WHOIS?

Run `claude mcp add kincaidyang-whois --transport http https://whois.ddnsip.cn/mcp`. The README documents 3 environment variables (WHOIS_REDIS_ADDR, WHOIS_BOOTSTRAP_INTERVAL, WHOIS_AUTH_KEYS) to set first. Set WHOIS_REDIS_ADDR, WHOIS_BOOTSTRAP_INTERVAL, WHOIS_AUTH_KEYS before connecting. You can also paste the ready-made client config above.

Does WHOIS require authentication?

No - the endpoint accepted our unauthenticated MCP initialize when probed on 2026-08-25; you can connect without credentials.

07 · Alternatives to WHOIS

Alternatives to WHOIS

Maintained cloud infrastructure servers if WHOIS isn't the fit.

Pairs well with

Servers that cover what WHOIS doesn't - only shown when the pairing reason fits the companion.

More cloud infrastructure MCP servers · Rogue Binary MCP · Yaver · Kubently · Artifacts · Docker MCP Server (l337-org)

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