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Lulu-The-Narwhal

domain-rdap-mcp

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
MCP_TRANSPORTNoTransport protocol for the MCP server. Set to 'http' for self-hosting over HTTP.
DOMAIN_LOCAL_DEVNoSet to '1' to enable local development mode.

Capabilities

Features and capabilities supported by this server

CapabilityDetails
tools
{
  "listChanged": true
}
logging
{}
prompts
{
  "listChanged": false
}
resources
{
  "subscribe": false,
  "listChanged": false
}
extensions
{
  "io.modelcontextprotocol/ui": {}
}
experimental
{}

Tools

Functions exposed to the LLM to take actions

NameDescription
check_domainA

Check whether a domain name is registered, using real-time RDAP data (the IETF-standardized successor to WHOIS). Use for "is domain-x.com available/registered", "who is domain-x.com registered with", or "when does domain-x.com expire" style questions.

domain is a bare domain like "example.com" -- no protocol prefix, no path, no spaces.

If the domain is NOT registered, returns {"domain": ..., "registered": false} -- this is a normal, meaningful answer (the domain is available), not an error.

If the domain IS registered, returns {"domain", "registered": true, "status", "registered_date", "expiration_date", "last_changed_date", "registrar"}. status is a list of RDAP status codes (e.g. "active", "client transfer prohibited"). Dates are ISO 8601. registrar is the registrar's name, or null if the registry redacts it for privacy.

For obviously malformed input (not a domain -- e.g. missing a dot, has spaces, or includes a protocol like "https://"), returns a clean {"error": ...} instead of calling the API.

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription
sponsored_card
result_widget_check_domain

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