io.github.cyanheads/whois-mcp-server
Domain registration, availability, DNS records, and IP/ASN resolution via RDAP and DNS-over-HTTPS.
MCP server · by cyanheads
About
io.github.cyanheads/whois-mcp-server is an MCP server published by cyanheads. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-11 and have recorded no change since. As of our marketplace pass on 2026-10-12.
What it asks for
- Runs on your machine
- Settings: 10
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Package
npm @cyanheads/whois-mcp-server (@cyanheads/whois-mcp-server on npm)
- npm downloads/week: 92 (2026-10-12)
- npm downloads/month: 878 (2026-10-12)
- Latest version on npm: 0.1.6, published 2026-09-30
npm facts come from the public npm registry (registry.npmjs.org, api.npmjs.org). Each figure is the registry's own and is never added to another. A registry that publishes no figure shows none: no number is not zero.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a local MCP server: npm package
Built from what Official MCP Registry declares.
claude mcp add --transport stdio whois-mcp-server -- npx -y @cyanheads/whois-mcp-server[mcp_servers.whois-mcp-server]
command = "npx"
args = ["-y", "@cyanheads/whois-mcp-server"]{
"mcpServers": {
"whois-mcp-server": {
"command": "npx",
"args": [
"-y",
"@cyanheads/whois-mcp-server"
]
}
}
}Optional settings it also lists: DOH_MAX_RETRIES, DOH_TIMEOUT_MS, MCP_AUTH_MODE, MCP_HTTP_ENDPOINT_PATH, MCP_HTTP_HOST, MCP_HTTP_PORT, MCP_LOG_LEVEL, MCP_PUBLIC_URL, RDAP_MAX_RETRIES, RDAP_TIMEOUT_MS.
We do not store launch arguments. If the server needs any, its own documentation names them.
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 0.1.6 | Downloads/month (npm): 878 Downloads/week (npm): 92 Forks (GitHub): 0 Stars (GitHub): 1 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
Nothing has moved on this plugin since we started watching it.
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
domain-checker-mcp io.github.WeAreBraveLabs/domain-checker-mcp
Fast domain availability checker. DNS + RDAP/WHOIS verification.
-
Domain WHOIS, DNS records, SSL certificates, and availability checks.
-
dns io.github.ofershap/dns
MCP server for DNS lookups, reverse DNS, WHOIS, and domain checks — zero auth, zero config
-
Check domain name availability via RDAP. Single, bulk, and smart suggestions. No API key needed.
-
Domain intelligence for DNS, WHOIS/RDAP, TLS, reputation, valuation, and brand protection.
-
Query WHOIS/RDAP information for domains, IP addresses, CIDR prefixes and ASNs. Self-hostable.
-
WHOIS, DNS, SSL, and domain availability lookups for AI assistants
-
WhoisXML MCP — wraps WhoisXML API (whoisxmlapi.com)
-
WHOIS/RDAP lookup, IP geolocation and Punycode conversion. 1400+ TLDs incl. IDN. No API key.
-
mcp-ip2whois io.github.ip2whois/mcp-ip2whois
WHOIS domain MCP server that query the WHOIS information using IP2WHOIS API.
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
nodebench io.github.HomenShum/nodebench
260 MCP tools across 49 domains. AI Flywheel, quality gates, research, web scraping.
-
agent-discover io.github.keshrath/agent-discover
Find, install and enable MCP servers mid-session on any host, with consent and tool pinning
-
Ask your AI coding agent if a domain is free — and get a real answer. Works for any TLD, including .de / .eu / .at / .ch where most checkers give up. Plugin for Claude Code. Pure…
-
Convert MCP servers to token-efficient CLI tools with auto-generated SKILL.md files for Claude Code agents
-
Real-time security filter for MCP tool communications. Works as a Claude Code hook to inspect all data sent to and received from MCP servers. Detects prompt injection, API key…
Has a listing on Claude Code: claude-plugins-official (5)
-
Connect Claude to a private MCP server through an Anthropic MCP tunnel. The /create-docker-mcp-tunnel command drives the Docker Compose quickstart end to end: certificates, proxy…
-
Dynatrace observability skills: DQL query patterns, application and infrastructure monitoring, log analysis, problem investigation, and incident response workflows, with the…
-
Search companies and contacts, enrich leads, find lookalikes, and get AI-ranked contact recommendations. Pre-built skills chain multiple ZoomInfo tools into complete B2B sales…
-
Skills for the Cloudflare developer platform: Workers, Durable Objects, Agents SDK, MCP servers, Wrangler CLI, and web performance.
-
Hosted MCP server for AI-assisted Grafana Cloud observability — no local installation required.
Has a listing on Claude: knowledge-work-plugins (5)
-
Search companies and contacts, enrich leads, find lookalikes, and get AI-ranked contact recommendations. Pre-built skills chain multiple ZoomInfo tools into complete B2B sales…
-
Hosted MCP server for AI-assisted Grafana Cloud observability — no local installation required.
-
Use Datadog directly in Claude Code through a preconfigured Datadog MCP server. Query logs, metrics, traces, dashboards, and more through natural conversation. This plugin is in…
-
Deploy, debug, and monitor applications on Render. Includes skills, an agent, slash commands, and a render.yaml validation hook.
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Cloudflare platform plugin with curated skills for Workers, Wrangler, and Agents SDK plus the official Cloudflare API MCP server.
-
Available for US1 customers only. Analyze, investigate, and act on your Datadog telemetry directly from ChatGPT using natural language. Ask questions about your production…
-
CrowdStrike Falcon Foundry development skills for building cybersecurity applications on the Falcon platform. Includes UI development, collections, functions, workflows, API…
-
Codex Security workflows for security scans, analysis, and investigation.
-
CrowdStrike Falcon Fusion skills for authoring, deploying, and executing Fusion workflows. Includes live action discovery, YAML authoring with schema validation, workflow import…
Has a listing on Community GitHub marketplaces (5)
-
4da-mcp-server io.github.4DA-Systems/4da-mcp-server
Upgrade intelligence for AI agents: what an upgrade changes, where it touches your code, CVE scans.
-
cybersec-toolkit io.github.26zl/cybersec-toolkit
Authorization-gated MCP server to discover and run 670+ security tools for CTF, pentest, and DFIR.
-
HTTP/REST client with saved collections, env secrets, and SSRF-safe host allowlisting.
-
WhatsApp MCP. SQLCipher-encrypted, scrubber-CI-gated, draft-and-confirm sends, voice transcription.
-
Dynatrace observability skills: DQL query patterns, application and infrastructure monitoring, log analysis, problem investigation, and incident response workflows, with the…
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Interactive GitHub Copilot canvas for discovering, connecting, and managing hosted MCP servers from an Azure Connector Namespace.
-
Safe BLE diagnostics, evidence workflows, and guarded automation for AI agents.
-
Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. Includes instructions for best…
-
Complete toolkit for building Model Context Protocol (MCP) servers in TypeScript/Node.js using the official SDK. Includes instructions for best practices, a prompt for generating…
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
Build Power Apps Canvas Apps using the Canvas Authoring MCP server.
-
Advanced Security plugin for GitHub Copilot.
-
workiq
Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.
Has a listing on Cursor: cursor/plugins (5)
-
Brainstorm domain names and check availability.
-
Browse and automate the web with TinyFish: run multi-step web automations, search the web, extract clean page content, and drive remote stealth browser sessions.
-
Build apps, scripts, and automations with the TypeScript SDK.
-
CLI-backed repo compatibility scans plus agents that audit startup, validation, and docs against reality.
-
playwright-mcp io.github.microsoft/playwright-mcp
Playwright Tools for MCP
Has a listing on Docker MCP Catalog (5)
-
The Official Model Context Protocol (MCP) server for Kagi Search & other tools.
-
VeyraX MCP is the only connection you need to access all your tools in any MCP-compatible environment.
-
Give your AI agents trusted access to the full Postman platform.
-
Access to Rube's catalog of remote MCP servers.
-
Access the latest documentation on Cloudflare products such as Workers, Pages, R2, D1, KV.
Has a listing on Official MCP Registry (5)
-
domain-checker-mcp io.github.WeAreBraveLabs/domain-checker-mcp
Fast domain availability checker. DNS + RDAP/WHOIS verification.
-
Domain WHOIS, DNS records, SSL certificates, and availability checks.
-
dns io.github.ofershap/dns
MCP server for DNS lookups, reverse DNS, WHOIS, and domain checks — zero auth, zero config
-
Check domain name availability via RDAP. Single, bulk, and smart suggestions. No API key needed.
-
Domain intelligence for DNS, WHOIS/RDAP, TLS, reputation, valuation, and brand protection.
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Is this your plugin?
Add it to your projects and prove you maintain it with a file in its repository, a file on your domain or a DNS record. You get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.