WhoisJSON

WHOIS, DNS, SSL, and domain availability lookups for AI assistants

Connector by Whoisjson · GitHub account verified by the MCP Registry

IndexedLicense unknownLocal (stdio)

Chalk Labs

Need help deploying WhoisJSON?

Chalk Labs sets up agents like this inside real teams: connected to your tools, tested on your data, with a human in the loop where it matters.

Book a call

Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/whoisjson-mcp-server

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Get the weekly diff

The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.

About

WHOIS, DNS, SSL, and domain availability lookups for AI assistants

Reviews

Write a review

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools: 4 read · 0 write · 0 deleteRead-only
Secrets: 1 (API keys, tokens or passwords)
Install scripts: Not scanned yet
Runs as: Node.js package

Tools by what they do 4

Read from the source code; the running server may list different tools.

Read 4 · Look things up without changing anything.

dns_lookup
domain_availability
ssl_check
whois_lookup

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

WHOISJSON_API_KEY

Tools (4)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

dns_lookup
Query DNS records for a domain name. Returns all available record types including A (IPv4), AAAA (IPv6), MX (mail), NS (nameservers), TXT, CNAME, SOA, CAA, DMARC, BIMI, MTA-STS, and TLS-RPT records. Useful for diagnosing DNS configuration, verifying mail settings, or auditing domain infrastructure.
domain_availability
Check whether a domain name is available for registration. Returns a boolean indicating if the domain is available. Useful for finding an unregistered domain before attempting to register it.
ssl_check
Retrieve and validate the SSL/TLS certificate details for a domain. Returns the issuer, validity period (valid_from / valid_to), whether the certificate is currently valid, fingerprints, subject alternative names, and full certificate details. Useful for checking certificate expiry, verifying the issuer, or auditing TLS configuration.
whois_lookup
Retrieve WHOIS registration data for a domain name. Returns registrar details, creation/expiration dates, nameservers, contact information, DNSSEC status, and domain age analysis. Useful for checking domain ownership and registration info.

Signals

Stars: 0
Forks: 0
Open issues: 0
Last commit: Apr 9, 2026 (6 months ago)
Last release: Apr 9, 2026 (6 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name: io.github.Whoisjson/mcp-server
Version: 1.0.3
Auth: API key
Packages: npm @whoisjson/mcp-server
License: License unknown
Repository: github.com/Whoisjson/mcp-server
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry github-graphql

Done for you

Rather not set it up yourself?

Chalk Labs scopes, builds and runs agents for your team: the task audit, the eval harness, the integrations and the weekly ops report. Fixed scope, priced before we start.

See how we build AI agents →Read the case studies

Chalk Labs is a two-founder AI and growth studio. We build AI agents, CRMs and MVPs for Web3 and AI companies, and have shipped 50+ product and token launches.

launches shipped: 50+; launches shipped
media placements: 500+; media placements
founders on every account: 2; founders on every account

Press we've placed: Forbes · CoinDesk · Decrypt · Cointelegraph · The Block

Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

Get WhoisJSON running in your business

Tell us what you want to automate. A founder replies within one working day with a plan, not a pitch deck.

Need help deploying WhoisJSON?

Call Get help

Cite this page

WhoisJSON MCP server. Agent Mart. https://agentmart.dev/connectors/whoisjson-mcp-server (last updated 2026-10-24)