CHATDOMAIN / MCP SESSION
𝕏NEWNow brainstorming on X as @chatdomainβ†’

Your agent
already has a shortlist.

Drop our MCP server into Claude Code and domain discovery becomes a natural part of your build loop β€” price checks, aftermarket lookups and watchlist writes, all from the same session.

$npx skills add https://github.com/madarco/chatdomain-researcher --skill domain-researcher
~/projects/marginalia β€” claude (mcp: chatdomain)⌘K
● claude Β· claude-sonnet-4.5 Β· ~/projects/marginalia
β€Ί Help me find a domain for a calm notes app for researchers. Sub $5k, prefer .com/.ai/.io.
✢ Thinking… brainstorming 8 candidate names, then sweeping TLDs via chatdomain-researcher.
β—† tool chatdomain.sweep_tld
{ names: ["marginalia","folio","quorum","lumen","stacksmith","sidenote","inkwell","pagelet"], tlds: ["com","ai","io"] }
βœ“ 1680 lookups Β· 1,204ms Β· 4 registrars reconciled
DOMAINSTATUSBEST PRICEREGISTRAR
marginalia.comaftermarket$3,800Sedo
marginalia.aitakenβ€”β€”
marginalia.iotakenβ€”β€”
folio.comtakenβ€”β€”
folio.aiopen$74Netim
folio.ioaftermarket$24,500Sedo
quorum.comtakenβ€”β€”
quorum.aiopen$79Vercel
quorum.ioopen$37Netim
lumen.aiopen$79Vercel
marginalia.soopen$48Netim
sidenote.devopen$14Vercel
Three stand out:
β€’ marginalia.so β€” $48/yr via Netim. Poetic, unique, registrable today.
β€’ folio.ai β€” $74/yr via Netim (save $25 vs GoDaddy). Short, on-brand for research.
β€’ quorum.io β€” $37/yr via Netim. Clean + memorable, though .io licensing is shifting.
Want me to open the watchlist on marginalia.com ($3,800 aftermarket, listed on Sedo) in case it drops?
β€Ί
Domains tracked312,480,291across all live registries
TLDs covered1,468gTLDs + ccTLDs + new gTLDs
Aftermarket listings4,812,004refreshed every 6h by Inngest
pitchroom.com+$12Β· Vercel✦lumen.aiβˆ’$4Β· Netim✦folio.dev+$0.50Β· Namecheap✦quorum.io+$3Β· GoDaddy✦stacksmith.coβˆ’$1Β· Vercel✦marginalia.app+$2Β· Vercel✦sidenote.studioβˆ’$0.75Β· Netim✦heron.xyz+$0.10Β· Namecheap✦pitchroom.com+$12Β· Vercel✦lumen.aiβˆ’$4Β· Netim✦folio.dev+$0.50Β· Namecheap✦quorum.io+$3Β· GoDaddy✦stacksmith.coβˆ’$1Β· Vercel✦marginalia.app+$2Β· Vercel✦sidenote.studioβˆ’$0.75Β· Netim✦heron.xyz+$0.10Β· Namecheap✦pitchroom.com+$12Β· Vercel✦lumen.aiβˆ’$4Β· Netim✦folio.dev+$0.50Β· Namecheap✦quorum.io+$3Β· GoDaddy✦stacksmith.coβˆ’$1Β· Vercel✦marginalia.app+$2Β· Vercel✦sidenote.studioβˆ’$0.75Β· Netim✦heron.xyz+$0.10Β· Namecheap✦
Β§ 02Four registrars, one request

One source of truth.
Three price checks.

Vercel tells us whether a domain is actually registrable. GoDaddy, Namecheap and Netim tell us what it would cost you elsewhere. We reconcile the spread so you always know when to switch registrar β€” and when to walk away.

V
Vercel
source of truth
G
GoDaddy
N
Namecheap
Γ‘
Netim
keyword
updated Β· 03s ago
DomainVercelGoDaddyNamecheapNetimΞ”
marginalia.comtaken
$12$14$11$1327%
marginalia.aiaftermarket
β€”β€”β€”β€”β€”
marginalia.iotaken
$39$49$42$3732%
marginalia.devopen
$14●$18$15$14●29%
marginalia.coopen
$28$34$29$27●26%
marginalia.appaftermarket
β€”β€”β€”β€”β€”
● = best price Β· refreshed hourly by Inngest workflowExport as CSV β†’
Β§ 03Aftermarket

The good ones are already taken.

Our Inngest workers crawl Sedo, Afternic and Dan every six hours. When the perfect name changes hands, you hear about it first β€” with a price, a negotiation window, and a history.

SedoAfternicDan+ 4 marketplaces
heron.comaftermarket
listed 21y ago Β· via Sedo Β· traffic: medium
price history
$38,000
buy-now or make offer
folio.aiaftermarket
listed 3y ago Β· via Sedo Β· traffic: low
price history
$24,500
buy-now or make offer
quorum.ioaftermarket
listed 8y ago Β· via Afternic Β· traffic: low
price history
$12,900
buy-now or make offer
lumen.appaftermarket
listed 4y ago Β· via Dan Β· traffic: low
price history
$8,400
buy-now or make offer
stacksmith.coaftermarket
listed 2y ago Β· via Sedo Β· traffic: none
price history
$3,200
buy-now or make offer
marginalia.soaftermarket
listed 1y ago Β· via Dan Β· traffic: none
price history
$1,890
buy-now or make offer
Β§ 04For humans and agents

Your agents
can shop too.

A type-safe oRPC surface, two plain REST endpoints, and a Model Context Protocol server so your Claude session can check availability the moment it suggests a name.

GET
/api/available
Boolean check across 40+ TLDs.
GET
/api/prices
Reconciled pricing from all four registrars.
MCP
/mcp
Drop-in server for Claude Desktop & Code.
live
# Install the chatdomain-researcher skill
$ npx skills add https://github.com/madarco/chatdomain-researcher \
--skill domain-researcher
# Works in Claude Code, Cursor, OpenClaw, Codex, OpenCode, etc.
βœ“ installed domain-researcher@1.4.0
βœ“ registered tools: check Β· prices
Β§ 06Now on X
𝕏
@chatdomain
Brainstorms domains right in your replies.

Tag us. Get a shortlist.
Right in the thread.

Reply to any post with @chatdomain and a one-line brief β€” it pulls the name from context, sweeps 40 TLDs, and posts 10 candidates with live availability in about 20 seconds.

4,128 replies last week ~18s median response Free for everyone
Sara Chen@sarabuilds Β· 2h
launching a scheduling app for podcast guests this month & still can't pick a name 😭
@chatdomain short + brandable, under $100?
↳ replied 18 seconds later
𝕏
ChatDomainβœ“@chatdomain Β· 2h
On it, Sara β€” here are 5 short picks with live availability:
guestcue.comopen$11.99
podpair.comopen$11.99
showmatch.aiopen$69.99
slotcast.ioopen$37
guestly.comaftermarket$2,400
Full thread with 5 more β†’ chatdomain.co/x/s0rAQ
↩ 12⟲ 48β™‘ 312πŸ“Š 18.2K