com.modernmustardseed/domain-health

up checked 2026-11-11T00:37:58.389Z

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Publisher-provided title

Domain Health

Publisher-provided description

Domain checks: SPF, DKIM, DMARC, BIMI, MTA-STS, SSL/TLS and HTTP security headers.

Summary by lookupd

Checks a domain's email authentication, SSL/TLS, HTTP security headers, and registration records to audit its security posture.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http domain-health https://mcp.modernmustardseed.com/domain-health

Codex, remote (streamable-http)

codex mcp add domain-health --url https://mcp.modernmustardseed.com/domain-health

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "domain-health": {
      "url": "https://mcp.modernmustardseed.com/domain-health"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (5 tools)

Publisher-provided text

• check_email_auth Explain in plain words whether email from a domain will reach the inbox and whether others can forge it. Checks MX, SPF with every include expanded and counted
• check_ssl Check the HTTPS certificate and TLS setup of a domain on port 443: issuer, expiry date and days left, whether the chain is complete and trusted, whether the cer
• check_security_headers Read the HTTP security headers a domain's homepage sends, as a browser receives them, and grade each: Strict-Transport-Security, Content-Security-Policy, clickj
• check_domain_registration Read a domain's public registration record from its registry over RDAP (no WHOIS scraping): registrar, creation, expiry and last-change dates, status locks such
• full_domain_report Run every Domain Health check on one domain at once (email authentication, SSL and TLS, security headers, registration and DNSSEC) and answer three questions in

Details

• Version: 1.0.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 653 ms
• First indexed: 2026-11-01T08:55:26.321Z
• Last seen in registry: 2026-11-01T08:55:26.321Z
• Website: https://mcp.modernmustardseed.com/docs/domain-health

Badge for your README

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[![lookupd status](https://lookupd.com/badge/com.modernmustardseed/domain-health.svg)](https://lookupd.com/servers/com.modernmustardseed/domain-health)

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• API base: https://api.lookupd.com
• MCP URL: https://api.lookupd.com/mcp