Domain Availability Check

Batch-check domain availability via whois.com with anti-bot/CAPTCHA assist.

Quick Start

# Setup (first time)
cd $SKILL_DIR && npm run setup

# Check domains from command line
node run.js scripts/domain-check.js --domains "example.ai,myapp.io" --nslookup

# Check domains from file
node run.js scripts/domain-check.js --file domains.txt --out results.json --nslookup

File format: one domain per line, # for comments. See examples/domains.txt.

Options

Option	Description	Default
--domains	Comma-separated domain list	-
--file	Path to domain list file	-
--out	Output JSON file path	stdout
--nslookup	Corroborate with DNS lookup	false
--user-data-dir	Persistent browser profile (reduces CAPTCHA)	-
--challenge-wait	Max CAPTCHA wait time (ms)	120000
--delay	Delay between checks (ms)	900

Behavior

• Opens visible browser (headless=false) for CAPTCHA handling.
• On Security Check / CAPTCHA: brings browser to front, waits for manual completion.
• Classification rules:
  • Looks like this domain has not been registered yet -> available
  • Domain Information / Registrar Information -> registered
  • WHOIS patterns like No match for, Domain not found -> available
• --nslookup: NXDOMAIN suggests unregistered DNS (corroboration only).

Output

JSON array with domain, status (available|registered|unknown|error), nslookup.

Tips

• Use --user-data-dir ./profile to reduce repeated CAPTCHA challenges.
• Run sequentially to minimize anti-bot triggers.