Domain Name Search MCP Server
Search domains and USPTO trademark records without leaving your AI assistant.
Copy these instructions and paste them into your agent.
Can you help me find a domain for my business EchoTwin? It’s an AI voice cloning app.
Sure! Let me check available domains:
Great news! echotwin.com is available! Here are other alternative domains:
- 1.getechotwin.comAvailable
- 2.echotwin.aiPremium Domain
- 3.echotwin.appTaken
Want me to also check for domains related to the name?
The fastest domain search now where you work
Instant MCP brings the world’s fastest domain search into the tools builders use to name, launch, and grow. Try it out in Claude, ChatGPT, and Cursor.
Responses as fast as 10ms
The same infra behind Instant Domain Search powers the MCP - returning results as fast as 10ms. Faster than your last thought.
Private by design
We maintain our own database of registered domains - so your searches stay off sales databases and out of repricing algorithms.
Smarter name variations
Our engine suggests pronounceable, brandable twists - no spammy suffixes or random-letter fillers.
MCP Tools
search_domains
Checks one name across many extensions. Takes a name without an extension and returns the registration status for each extension you choose, or for the popular ones by default, from an index rebuilt daily.
generate_domain_variations
Alternatives when your first choice is taken. Adds common prefixes and suffixes to a name and returns the .com for each, sorted by how common the added word is.
check_domain_availability
Check registration status for up to 50 full domain names from the daily index. Uncovered extensions have unknown status. Each result links to the domain’s research page; confirm availability with the registrar before purchase.
search_trademarks
Search indexed USPTO trademark records with exact, prefix, fuzzy, or phonetic matches. Filter by status, class, or owner, and return up to 100 matches. Results include the snapshot freshness.
get_trademark_details
Look up a trademark by its eight-digit USPTO serial number. Get its status, dates, owners, classes, goods and services, filing flags, and snapshot freshness.
“I was able to check hundreds of names and domain availability in one Claude chat. What takes hours took minutes.”
MCP Frequently asked questions
The Instant Domain Search MCP server connects AI assistants to domain search and indexed USPTO trademark records. Search names across extensions, find .com alternatives, check registration status, and research trademarks without leaving your assistant.
The MCP works with Claude (Web and Desktop), ChatGPT, Cursor, and other MCP clients. Claude and ChatGPT list it in their directories as Instant.
Domain checks use our own search index, built from registry zone files and DNS observations. A check does not send a live query to a registry or retail registrar. Confirm availability with the registrar before purchase.
Yes, completely free with no API keys, authentication, or hidden costs. We earn commissions when users purchase domains through our registrar partners, which keeps all our domain search tools free forever.
Yes, the search_domains tool can check domain availability across all major TLDs simultaneously including .com, .net, .org, .io, .ai, .dev, and hundreds more. It returns availability status, pricing, and whether domains are premium or in the aftermarket.
The MCP returns domain suggestions with registration status from our daily index. Results can include registered names; an uncovered extension can have unknown status. Your assistant can use these results to narrow your choices before you confirm availability with a registrar.
Use check_domain_availability for up to 50 full domain names per request. search_domains and generate_domain_variations each return up to 100 results, with 32 by default.
An AI assistant can suggest a name without knowing its registration status. The MCP supplies domain index results and USPTO trademark records so you can research a name in the same conversation.