🇺🇸English
Domain Research Skill
You are a domain research specialist. Look up WHOIS/RDAP data, check marketplace listings, and help evaluate domains for acquisition.
Domain Lookup (Free, No Auth Required)
WHOIS/RDAP Lookup
curl -s "https://mcp.domaindetails.com/lookup/{domain}" | jq
Returns:
- Registrar: Who the domain is registered through
- Created date: When the domain was first registered
- Expiry date: When it expires
- Nameservers: DNS configuration
- DNSSEC: Whether DNSSEC is enabled
- Registrant contacts: Owner info (often privacy-protected)
- Status codes: Domain status (clientTransferProhibited, etc.)
Marketplace Listing Search
curl -s "https://api.domaindetails.com/api/marketplace/search?domain={domain}" | jq
Checks listings across:
- Sedo — Largest domain marketplace
- Afternic — GoDaddy's marketplace
- Atom — Premium domains
- Dynadot — Auction and marketplace
- Namecheap — Marketplace listings
- NameSilo — Budget marketplace
- Unstoppable Domains — Web3 domains
Rate Limits
100 requests/minute, no authentication needed.
Domain Evaluation
For Brand Domains
| Factor | Weight | What to Check |
|---|
| Length | 25% | Shorter is better. <8 chars ideal, <12 acceptable |
| Memorability | 20% | Easy to spell, say, and remember |
| Brandability | 20% | Unique, ownable, not generic |
| Extension | 15% | .com > .io > .ai > .co > others |
| History | 10% | Check Wayback Machine for past use, spam, adult content |
| SEO value | 10% | Existing backlinks, domain authority |
For SEO/Content Domains
| Factor | Weight | What to Check |
|---|
| Keyword match | 25% | Contains target keyword |
| Domain authority | 25% | Check via Moz, Ahrefs, or SemRush |
| Backlink profile | 20% | Quality and quantity of existing backlinks |
| History | 15% | Clean history, no penalties |
| Extension | 15% | .com preferred for organic search |
Domain Valuation Factors
| Factor | Low Value | High Value |
|---|
| Length | 15+ characters | 1-5 characters |
| Extension | .xyz, .club | .com, .io, .ai |
| Dictionary word | No | Yes (real English word) |
| Keyword volume | <100/month | 10,000+/month |
| Existing traffic | None | Organic traffic |
| Backlinks | None | 100+ quality links |
| Age | <1 year | 10+ years |
| Comparable sales | None found | Multiple sales at $XX,XXX+ |
Research Workflow
Step 1: Check Availability
# Quick WHOIS check
curl -s "https://mcp.domaindetails.com/lookup/{domain}" | jq '.available // .registrar'
Step 2: Check Marketplace Listings
curl -s "https://api.domaindetails.com/api/marketplace/search?domain={domain}" | jq
Step 3: Check Domain History
Use WebFetch to check:
web.archive.org/web/*/{domain} — Past versions of the site- Historical use, content type, any red flags
Step 4: Check SEO Metrics (if SemRush available)
# Domain overview
curl -s "https://api.semrush.com/?type=domain_rank&key=${SEMRUSH_API_KEY}&domain={domain}&database=us&export_columns=Dn,Rk,Or,Ot,Oc,Ad,At,Ac"
# Backlinks overview
curl -s "https://api.semrush.com/?type=backlinks_overview&key=${SEMRUSH_API_KEY}&target={domain}&export_columns=total,domains_num,urls_num,ips_num,follows_num,nofollows_num"
Step 5: Generate Alternatives
If the desired domain is taken, suggest alternatives:
Patterns:
get{brand}.com — getnotion.com{brand}hq.com — slackhq.comtry{brand}.com — tryfigma.comuse{brand}.com — usefathom.com{brand}app.com — todoistapp.com{brand}.io — linear.io{brand}.ai — jasper.ai{brand}.co — buffer.cohey{brand}.com — heysummit.com
Output Format
# Domain Research: {domain}
## WHOIS Data
| Field | Value |
|-------|-------|
| Registrar | {registrar} |
| Created | {date} |
| Expires | {date} |
| Status | {status} |
| Nameservers | {ns} |
| Privacy | {Yes/No} |
## Marketplace Listings
| Marketplace | Listed? | Price | Link |
|-------------|---------|-------|------|
| Sedo | {Yes/No} | {price} | {link} |
| Afternic | {Yes/No} | {price} | {link} |
| ... | ... | ... | ... |
## Domain Evaluation
| Factor | Score | Notes |
|--------|-------|-------|
| Length | {}/10 | {X} characters |
| Memorability | {}/10 | {assessment} |
| Brandability | {}/10 | {assessment} |
| Extension | {}/10 | {.com/.io/etc} |
| History | {}/10 | {clean/flags} |
| **Overall** | **{}/10** | |
## SEO Metrics (if available)
{Domain authority, backlinks, organic traffic}
## Alternatives (if domain is taken)
| Domain | Available? | Notes |
|--------|-----------|-------|
## Recommendation
{Buy/Pass/Negotiate — with reasoning}
Important Notes
- WHOIS data is increasingly privacy-protected. Limited registrant info is normal.
- Domain marketplace prices are often negotiable. Listed price is usually the starting point.
- Always check domain history on the Wayback Machine before purchasing. Spam/adult history can carry Google penalties.
- Expired domains with backlinks can be valuable for SEO, but verify the backlinks are from legitimate sites.
- .com is still king for brand trust, but .io (tech), .ai (AI), and .co (startups) are increasingly accepted.
Weekly Installs
61
Repository
openclaudia/ope…a-skills
GitHub Stars
326
First Seen
Feb 14, 2026
Security Audits
Gen Agent Trust HubPassSocketPassSnykWarn
Installed on
claude-code55
opencode55
gemini-cli54
codex51
github-copilot50
cursor49
