mcp-diagnostics

DNS, SSL, Security, Performance — all from your AI assistant. The only MCP server for website diagnostics.

4 Free Tools 4 Pro Tools
npx mcp-diagnostics


GitHub npm

Free Tools

dns_lookup

Full DNS records: A, AAAA, MX, TXT, NS, CNAME, SOA.

ssl_check

SSL certificate validation, issuer, expiry, days remaining with warnings.

http_headers

Response headers + tech stack detection: Nginx, Cloudflare, Next.js, AWS, Vercel.

ping

Uptime check with response time and rating (Excellent / Good / Slow / Down).

Pro Tools

$4.99/month

security_scan

Security headers audit with A-F grading. HSTS, CSP, X-Frame-Options + 6 more.

whois

Domain WHOIS via RDAP. Registration, expiry, registrar, nameservers.

full_audit

Complete site audit in one call: DNS + SSL + Security + Performance + Tech Stack.

compare_sites

Compare two sites: performance, security grade, SSL, tech stack. Picks a winner.

Get Started

{
  "mcpServers": {
    "mcp-diagnostics": {
      "command": "npx",
      "args": ["-y", "mcp-diagnostics"]
    }
  }
}

Add to Claude Desktop, Cursor, or VS Code.

Get Pro — $4.99/mo