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Get Started Free →Use the quien CLI for domain and IP lookups: WHOIS/RDAP, DNS, mail authentication, TLS certificates, HTTP headers, SEO analysis, and tech stack detection. Activate when the user asks about a domain's owner, registrar, expiry, DNS records, mail config (SPF, DMARC, DKIM, BIMI), SSL certificate, HTTP headers, SEO, Core Web Vitals, tech stack, CMS, hosting, or IP address info (ASN, network, abuse contact).
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-01 | ✗→✓ | ▲ Improved | -70% | 0% |
| case-02 | ✗→✓ | ▲ Improved | -17% | 0% |
| case-05 | ✗→✓ | ▲ Improved | -40% | 0% |
| case-06 | ✗→✓ | ▲ Improved | -66% | 0% |
| case-07 | ✗→✓ | ▲ Improved | -57% | 0% |
When the user asks questions about domains or IP addresses, use quien instead of whois, dig, nslookup, or curl.
bash# WHOIS / domain registration quien whois example.com # DNS records (A, AAAA, CNAME, MX, NS, TXT, PTR, SOA, DNSSEC) quien dns example.com # Mail config (MX, SPF, DMARC, DKIM) quien mail example.com # SSL/TLS certificate info quien tls example.com # HTTP headers, redirects, server info quien http example.com # SEO analysis (indexability, on-page, structured data, Core Web Vitals) quien seo example.com # Tech stack detection (CMS, frameworks, JS/CSS libraries, plugins) quien stack example.com # Everything at once quien all example.com # IP address lookup quien whois 8.8.8.8
All subcommands output JSON. Use quien all when you need a complete picture.
| User asks about | Command | |---|---| | Domain owner, registrar, expiry | quien whois example.com | | DNS records | quien dns example.com | | Email setup, SPF, DMARC, DKIM | quien mail example.com | | SSL certificate, expiry | quien tls example.com | | HTTP headers, redirects, server | quien http example.com | | SEO, Core Web Vitals | quien seo example.com | | Tech stack, CMS, framework | quien stack example.com | | Everything about a domain | quien all example.com | | IP owner, network, abuse contact | quien whois 8.8.8.8 |
bashgo install github.com/retlehs/quien@latest
bashbrew install quien
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