@whoisjson/mcp-server
OfficialServer Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| WHOISJSON_API_KEY | Yes | API key from WhoisJSON dashboard (sign up at whoisjson.com) |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| whois_lookupA | 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. |
| dns_lookupA | 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. |
| ssl_checkA | 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. |
| domain_availabilityA | 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. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
TDQS
Scored across 4 tools
Each tool targets a distinct aspect of domain investigation: WHOIS registration data, DNS records, SSL certificate validity, and availability check. There is no overlap or ambiguity in their purposes.
All names use snake_case and follow a clear pattern, but the verb usage is slightly inconsistent: whois_lookup and dns_lookup share the 'lookup' suffix, ssl_check uses 'check', and domain_availability is a noun phrase. Still readable and predictable.
Four tools form a focused, well-scoped set for domain diagnostics. Each tool addresses a core need (WHOIS, DNS, SSL, availability) without redundancy or excess.
Covers the primary domain lookup operations thoroughly. Minor gaps like reverse DNS or certificate transparency logs are not present, but the included tools handle typical domain investigation workflows without dead ends.