domain-intel

# Domain Intelligence — Passive OSINT Passive domain reconnaissance using only Python stdlib. **Zero dependencies. Zero API keys. Works on Linux, macOS, and Windows.** ## Helper script This skill includes `scripts/domain_intel.py` — a complete CLI tool for all domain intelligence operations. ```bash # Subdomain discovery via Certificate Transparency logs python3 SKILL_DIR/scripts/domain_intel.py subdomains example.com # SSL certificate inspection (expiry, cipher, SANs, issuer) python3 SKILL_DIR/scripts/domain_intel.py ssl example.com # WHOIS lookup (registrar, dates, name servers — 100+ TLDs) python3 SKILL_DIR/scripts/domain_intel.py whois example.com # DNS records (A, AAAA, MX, NS, TXT, CNAME) python3 SKILL_DIR/scripts/domain_intel.py dns example.com # Domain availability check (passive: DNS + WHOIS + SSL signals) python3 SKILL_DIR/scripts/domain_intel.py available coolstartup.io # Bulk analysis — multiple domains, multiple checks in parallel python3 SKILL_DIR/scripts/domain_intel.py bulk example.com github.com google.com python3 SKILL_DIR/scripts/domain_intel.py bulk example.com github.com --checks ssl,dns ``` `SKILL_DIR` is the directory containing this SKILL.md file. All output is structured JSON. ## Available commands | Command | What it does | Data source | |---------|-------------|-------------| | `subdomains` | Find subdomains from certificate logs | crt.sh (HTTPS) | | `ssl` | Inspect TLS certificate details | Direct TCP:443 to target | | `whois` | Registr...