Domain & Company Intel MCP — by SelfLabbs

Domain and company intelligence for AI agents. Give an agent a domain or email address and it can vet the company, qualify the lead, or map the target — all from free public data, no API keys.

Tools

Tool	What it does	Source
domain_intel	Registrar, creation/expiry dates, domain age, EPP status, nameservers, DNSSEC, abuse contact	RDAP
dns_lookup	A, AAAA, MX, NS, TXT, CNAME, SOA records	Cloudflare DoH
email_deliverability	MX presence, SPF/DMARC posture, free vs. disposable provider, verdict	Cloudflare DoH
tech_stack	Web server, CMS/framework, CDN, analytics, security headers, page title	Live fetch
subdomains	Subdomain discovery from Certificate Transparency logs	crt.sh
domain_report	One call returns a full dossier: registration + DNS + email deliverability + tech stack, combined	all-in-one

No API keys required for any tool.

Quick start (hosted)

Claude Code

claude mcp add --transport http domain-intel https://domain.selflabbs.com/mcp

Claude Desktop / other clients

{
  "mcpServers": {
    "domain-intel": {
      "command": "npx",
      "args": ["mcp-remote", "https://domain.selflabbs.com/mcp"]
    }
  }
}

Example agent workflows

• "Is acme.com a real, established business? When was it registered?" → domain_intel
• "This lead's email is @acme.io — can it receive mail, is it a throwaway?" → email_deliverability
• "What's competitor.com built on?" → tech_stack
• "Map the public subdomains of target.com" → subdomains

Pricing

The hosted endpoint is freemium:

• Free — all six tools work, results capped at 10 items per call. No key required.
• Builder — $19/mo — uncapped results, 5,000 tool calls/mo, priority endpoint.
• Team — $49/mo — uncapped results, 25,000 tool calls/mo, usage dashboard.

Subscribe → — one subscription unlocks Pro on every SelfLabbs server.

Using your Pro key

After subscribing you receive a license key beginning with SELFLABBS-. Pass it as a Bearer token and the free-tier caps are removed:

claude mcp add --transport http --header "Authorization: Bearer SELFLABBS-XXXX-XXXX" domain-intel https://domain.selflabbs.com/mcp

The key is validated against Polar on each request (cached briefly). Cancel anytime — access reverts to the free tier automatically.

Self-host (Cloudflare Workers, free tier)

Create a Worker, paste worker.js, deploy. Optional SERVER_API_KEY env var gates access behind Authorization: Bearer <key>. No other configuration needed.

License

MIT. Data from RDAP, Cloudflare DNS, and crt.sh under their respective terms.