Domain & Company Intel MCP — Claude Code MCP server: domain checks
Lets an agent check a domain or an email address against open data: registration, DNS, mail setup, site stack. No API key.
claude mcp add --transport http domain-dns-whois https://domain.datakoot.com/mcpWhat Domain & Company Intel MCP does
Six tools land in the agent. domain_intel pulls registrar, creation and expiry dates, domain age, EPP statuses, nameservers and an abuse contact out of RDAP. dns_lookup returns A, AAAA, MX, NS, TXT, CNAME and SOA records over Cloudflare DoH, while email_deliverability reads MX presence plus SPF and DMARC posture and judges whether the mailbox belongs to a free or disposable provider. Rounding it out are tech_stack, which inspects a live page response, subdomains, which mines Certificate Transparency logs at crt.sh, and domain_report, a single call that bundles registration, DNS, mail and stack facts.
The hosted endpoint sits at https://domain.datakoot.com/mcp. Point any supported client at that URL and it works. The free tier allows 100 calls per day with no signup and caps result lists at 10 items. Pro lifts the ceiling to 50,000 calls a month, drops the daily limit and returns full lists; you pass the key as a Bearer token in the Authorization header. Only tools/call counts against quota, so connecting and listing tools stays free.
RDAP, Cloudflare DNS and crt.sh supply the data, which means private zones and internal networks return nothing useful. The worker.js file in the repository is a snapshot of the hosted code, not a synced copy — the live endpoint is deployed on its own and can run ahead of it. Self-hosting requires a Cloudflare Workers account.
What it helps with
- find out who registered a domain and when
- check whether a domain's mail is protected against spoofing
- see what a competitor's site is built on
- enumerate a target's public subdomains
- gather a company dossier from its domain in one call
Example prompts for the agent
- Check acme.com: when was it registered, who is the registrar, is it still active?
- Can a mailbox at @acme.io receive mail, and is the provider disposable?
- Pull a full domain report for target.com.
How to install Domain & Company Intel MCP
Platform CLI: remote server
claude mcp add --transport http domain-dns-whois https://domain.datakoot.com/mcpPlatform CLI: remote server
codex mcp add domain-company-intel-mcp --url https://domain.datakoot.com/mcpConfig file
{
"mcpServers": {
"domain-company-intel-mcp": {
"url": "https://domain.datakoot.com/mcp"
}
}
}Config file
{
"servers": {
"domain-company-intel-mcp": {
"type": "http",
"url": "https://domain.datakoot.com/mcp"
}
}
}Platform CLI: remote server
gemini mcp add -t http domain-company-intel-mcp https://domain.datakoot.com/mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about Domain & Company Intel MCP
How do I install Domain & Company Intel MCP in Claude Code?
Run claude mcp add --transport http domain-company-intel-mcp https://domain.datakoot.com/mcp.
What does Domain & Company Intel MCP do?
It gives the agent lookup tools for domains and email addresses: RDAP registration details, DNS records, mail deliverability, site tech stack and subdomains from Certificate Transparency.
Do I need an API key?
Not on the free tier — connect to the endpoint and call tools, up to 100 calls a day. A Pro key removes the daily cap and the 10-item result limit.
