Whois MCP server
Domain registry records and status, DNS records, and IP/ASN resolution over RDAP and DoH.
1 stars372 downloads/wk
Reviews
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If you have run it, two minutes of your experience saves the next person an afternoon.
Whois tools
No tool declarations could be read from the package source. They show once the server is installed.
Public scan report
scanner v0.1.10 · 2026-10-30 · same rubric, same numbers if you re-run it
- Code scan34 source files scanned; 34 source files scanned25/25
- –Live reliabilityno gateway calls yet and no remote to proben/a
- –Tool poisoningtools not inspected (local package is not executed); not countedn/a
- Auth qualitylocal package, no credentials required12/15
- Maintenancelast push 13 days ago15/15
- Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
How Whois compares
Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.
- Safety score
- 92/100
- higher than 95% of 48,255 servers
- GitHub stars
- 1
- more than 65% of 28,688 servers
- Downloads a week
- 372
- more than 84% of 12,191 servers with a package
Release history: 5 versions in the registry since 2026-08-21, latest 2026-10-16, typically one every 13 days.
Install Whois in Claude Code, Cursor or VS Code
Runs npx -y @cyanheads/whois-mcp-server on your machine. Read the scan report first; the gateway never runs local packages.
claude mcp add whois-mcp-server -- npx -y @cyanheads/whois-mcp-server
What the publisher says
From the Whois repository's README, as published. We do not edit it. Read it on GitHub
@cyanheads/whois-mcp-server Look up domain registration, check availability, fetch DNS records, and resolve IPs and ASNs via RDAP and DNS-over-HTTPS via MCP. STDIO or Streamable HTTP. 6 Tools
Overview
Domain and network intelligence via RDAP and DNS-over-HTTPS. Look up domain registrations, check availability, fetch DNS records, and resolve IPs and ASNs to their registries — all via public, keyless data sources. Runs as a stdio process or a local Streamable HTTP server.
Tools
Capability reference
whoislookupdomain tool
- RDAP-first via IANA auto-bootstrap — automatically selects the correct registry RDAP server per TLD
- Returns registrar, creation/expiry dates, nameservers, EPP status codes, and DNSSEC delegation flag
- Surfaces registrant_redacted: true when privacy redaction is in effect (standard post-GDPR for gTLDs)
- Throws rdapnocoverage when the TLD has no RDAP server in the IANA bootstrap — use whoischeckavailability instead
- Throws domainnotfound on an RDAP 404 (domain not registered) — use whoischeckavailability to confirm
whoischeckavailability tool
Shortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
Whois: common questions
- Is Whois MCP server safe?
- Yes, by our scan: it is graded A (92/100). Read the Whois safety report
- How do I install Whois?
- It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
- Does Whois need an API key?
- No secret keys are declared. It reads 16 settings from the environment.
- Is Whois maintained?
- The last commit was 17 days ago (2026-10-17). The latest release is v0.2.1.
- What can I use instead of Whois?
- Servers from other publishers that do the same job: Domain Liveness MCP server.
- How does Whois compare with other MCP servers?
- safety score 92/100 (higher than 95% of 48,255 servers); github stars 1 (more than 65% of 28,688 servers); downloads a week 372 (more than 84% of 12,191 servers with a package). Full comparison.
Alternatives to Whois
Same job from other publishers: the closest match first, then the best rated.
- Domain LivenessIs this business's website still there? Checks apex and www, and DNS separately from HTTP.not reviewedEstablishedA
