// MCP TOOL REFERENCE

WHOISJSON TOOLS

4 tools from the WhoisJSON MCP Server, categorised by risk level.

READ TOOLS

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, S... domain_availability Check whether a domain name is available for registration. Returns a boolean indicating if the domain is available. Useful for finding an unregiste... ssl_check Retrieve and validate the SSL/TLS certificate details for a domain. Returns the issuer, validity period (valid_from / valid_to), whether the certif... whois_lookup Retrieve WHOIS registration data for a domain name. Returns registrar details, creation/expiration dates, nameservers, contact information, DNSSEC ...

// FAQ

How many tools does the WhoisJSON MCP server have? +

The WhoisJSON MCP server exposes 4 tools across 1 categories: Read.

How do I enforce policies on WhoisJSON tools? +

Use Intercept, the open-source MCP proxy. Write YAML rules for each tool — rate limits, argument validation, or deny rules — then run Intercept in front of the WhoisJSON server.

What risk categories do WhoisJSON tools fall into? +

WhoisJSON tools are categorised as Read (4). Each category has a recommended default policy.

Enforce policies on WhoisJSON

Open source. One binary. Zero dependencies.

npx -y @policylayer/intercept

github.com/policylayer/intercept →