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domain-research

Check domain availability individually or in batches, and search a keyword across domain endings such as .com and .dev. Look up registration details, expiry dates, and nameservers using public registration services, without API keys.

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Free domain research and availability checking. No API keys or credentials required. Uses RDAP (1195+ TLDs) with whois CLI fallback for universal coverage. Checks if domains are available, searches keywords across TLDs, performs WHOIS/RDAP lookups, checks expiry dates, and finds nameservers. Use when the agent needs to: check if a domain is available, search for domains, find who owns a domain, check domain expiration, get nameservers, bulk check domains, or do any domain research. Triggers on: 'check domain', 'is domain available', 'search domains', 'domain availability', 'who owns this domain', 'whois', 'domain expiry', 'when does domain expire', 'nameservers for', 'domain research', 'find domains for', 'domain ideas', 'bulk domain check'.

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适用场景

  • Check availability for several domain candidates
  • Search a name across multiple domain endings
  • Look up registration details and expiry dates
  • Check a list of domains from a file

包含的文件(2)

  • SKILL.md3.3 KB
  • scripts/domain-lookup.py27.9 KB

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

Domain Research

Free domain availability checking and WHOIS/RDAP lookup. Zero credentials. Works out of the box.

How it works: RDAP protocol (1195+ TLDs, JSON, fast) with whois CLI fallback for TLDs RDAP doesn't cover (.io, .co, .me, .sh, .gg, .so, etc). Parallel lookups for speed.


CLI Script

SCRIPT="skills/domain-research/scripts/domain-lookup.py"

No env vars, no API keys, no setup. Just run it.


Commands

Check availability

# Single or multiple domains (comma-separated)
python3 "$SCRIPT" check "example.com"
python3 "$SCRIPT" check "myproject.com,myproject.io,myproject.ai,myproject.dev"

Search keyword across TLDs

# Default: .com .net .org .io .co .ai .dev .app .xyz .me .tech .cloud + more
python3 "$SCRIPT" search "myproject"

# Custom TLDs
python3 "$SCRIPT" search "myproject" --tlds ".com,.io,.ai,.dev,.app,.co"

WHOIS / RDAP lookup

# Full registration details (registrar, dates, status, nameservers, contacts)
python3 "$SCRIPT" whois google.com
python3 "$SCRIPT" whois kortix.ai

Expiry check

# When does it expire? How many days left?
python3 "$SCRIPT" expiry kortix.ai

Nameservers

python3 "$SCRIPT" nameservers google.com

Bulk check from file

# File with one domain per line
python3 "$SCRIPT" bulk domains.txt

How it works internally

  1. RDAP first -- queries rdap.org/domain/{domain}. HTTP 200 = taken, 404 = available. Returns structured JSON.
  2. whois fallback -- for TLDs without RDAP support, runs whois CLI and pattern-matches response.
  3. Parallel -- uses thread pool (8 workers) for batch checks.
  4. Rate-aware -- bulk mode pauses between batches.

RDAP coverage (1195+ TLDs)

.com, .net, .org, .ai, .dev, .app, .xyz, .tech, .cloud, .gay, .wtf, .bot, .news, .space, .capital, and 1180+ more gTLDs.

whois fallback covers

.io, .co, .me, .sh, .gg, .so, and other ccTLDs that RDAP doesn't support yet.


Rules

  • No credentials needed. Just run the script.
  • Present results clearly. Highlight available domains. Show method used (RDAP/whois).
  • For keyword search, default to common TLDs unless the user specifies otherwise.
  • For WHOIS lookups, show registrar, dates, status, nameservers. Contacts are often redacted (GDPR).
  • Rate limits: RDAP has no documented limit but be reasonable. whois registries may throttle after ~50 queries/minute.
  • Cannot register/buy domains. This is research only. Direct the user to a registrar to purchase.

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