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Getting started — Instant Domain Search MCP

Introduction

Connect your AI assistant to domain search and indexed USPTO trademark records. Search names across extensions, find .com alternatives, check registration status, and look up trademarks.

Available for Claude (Web & Desktop), ChatGPT (developer mode), and Cursor, the MCP eliminates the back-and-forth between AI suggestions and manual domain checking. Your AI can now check domain availability instantly while generating ideas, keeping your entire workflow in one place.

Claude using the Instant Domain Search MCP to find domains for a Brooklyn matcha cafe

How It Works

Domain status comes from our search index, rebuilt daily from registry zone files and DNS observations. Checks do not make live registry queries. Uncovered extensions can have unknown status. Confirm availability with the registrar before purchase.

Available 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 or by how close it is in meaning to the original.
  • check_domain_availability — Check registration status for up to 50 full domain names from the daily index. Uncovered extensions have unknown status. Results include registration links; 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.

Privacy & Security

Domain checks use our own index instead of a live query to a retail registrar. No account or API key is required for the MCP server.

Supported Platforms

Check out each of our guides for the following platforms:

Technical Implementation

The MCP server endpoint is:

https://mcp.instantdomainsearch.com/mcp

The server uses Streamable HTTP and requires no authentication. Every tool listed above is available through this endpoint.

Need Help?

Next Steps

  1. Choose your platform from the guides above
  2. Complete the setup (typically under 2 minutes)
  3. Start searching with natural language queries like:
    • "Find an available domain for my coffee shop"
    • "Check if myproject.dev is available"
    • "Generate variations of 'techstartup' that I can register"

The Instant Domain Search MCP transforms your AI chats into an intelligent domain research partner — no browser tabs, no copy-paste, just instant results.