Domain RDAP MCP
Free, keyless domain registration lookup via RDAP: registered, available, registrar, expiration.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"domain-rdap-mcp": {
"url": "https://ads.getlulu.dev/domain/mcp"
}
}
}Remote endpoints
https://ads.getlulu.dev/domain/mcpstreamable-httpWhat it can do
Tool inventory
Tools (1)
🟢check_domain(domain)
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.
Input Schema
{
"type": "object",
"properties": {
"domain": {
"type": "string"
}
},
"required": [
"domain"
],
"additionalProperties": false
}Output Schema
{
"type": "object",
"additionalProperties": true
}Community
Evidence