Domain check skill

Skill simp-lee/domain-check-skill/domain-check-skill

Batch domain availability checker via whois.com with Playwright browser automation. Handles anti-bot/CAPTCHA challenges by bringing browser to foreground for manual verification. Supports any TLD. Use when (1) checking if domains are available for registration, (2) batch-checking multiple domain candidates, (3) verifying domain availability before purchase, or (4) exporting domain check results to JSON.From its SKILL.md

Install

npx -y skills add simp-lee/domain-check-skill --skill domain-check-skill

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

3 things to look at

2 stars2 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.
runs commandsInstructs the agent to run 3 commands, including `cd $SKILL_DIR && npm run setup` and 2 more.
fetches URLsInstructs the agent to fetch 1 URL, including whois.com.

SKILL.md

2.1 KB, 429 tokens by cl100k_base, as published. Nobody here has run it

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.

What ships with it: 4 files

14.2 KB alongside SKILL.md, 2 of them executable

examples/

domains.txt239 B

scripts/

domain-check.jsruns11.5 KB

package.json879 B
run.jsruns1.6 KB