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domaincheck

domaincheck

Local
github.com/CloudCorpRecordsBusiness & Marketing0Updated 1w ago
Repository

About domaincheck

domaincheck wraps Just Domain domain and trademark lookups in a local stdio server and CLI for teams assessing names. It checks registration availability and pricing, transfer constraints, and US, EU, and Israeli trademark records; it does not register domains or provide legal advice.

Key features

  1. 01Check domain availability and registration prices
  2. 02Precheck domain transfer conditions and costs
  3. 03Search US, EU, and Israeli trademark registers
  4. 04Return upstream results as JSON
  5. 05CLI and stdio MCP support

Use cases

  1. 01Compare registration prices for candidate domains
  2. 02Check restrictions before transferring a domain
  3. 03Search trademark registers for a proposed name

MCP support

It provides a stdio MCP server that forwards lookups to the Just Domain MCP service and returns its results.

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "cloudcorprecords-domaincheck": {
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/domaincheck"
      ]
    }
  }
}
Run commandnpx -y @reneturcios/domaincheck

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
npm@reneturcios/domaincheck0.1.0
ocighcr.io/cloudcorprecords/domaincheck:0.1.0

Tools

3

Saved tool list · updated 1w ago

ParameterTypeRequiredDescription
querystringNoFree text: one or more names, comma- or space-separated. Names given without a TLD are expanded to com/io/ai/co/net. Ignored when domains is supplied.
domainsarrayNo1-200 fully-qualified domain names, each including its TLD (e.g. ["acme.com", "acme.io"]). The tool checks exactly these names. Preferred over query.

Details

From the project README

domaincheck

Before you build on a name, check the name. domaincheck wraps the public Just Domain MCP service in a local stdio server and a small CLI, with three read-only lookups:

  • search_domains — is the domain available, and what does one full registration term cost (plus the renewal price and, for available names, a checkout URL)?
  • check_domain_transfer — for a domain you already own elsewhere: what would block a transfer in, would DNS survive the move, and what is the full-term transfer price?
  • check_trademark — one proposed name against the US, EU and Israeli trademark registers read by Open Trademarks.

Prices are term totals, never per-year rates — on .ai the term is two years, so a quoted .ai figure covers two years. Nothing here places an order, files anything, or takes a payment: registration and transfer happen only in a browser on justdomain.ai, and a trademark register search is not legal advice and never clears a name.

How it works

Each call is forwarded as a JSON-RPC tools/call POST to https://mcp.justdomain.ai/ (no authentication), and the upstream's answer — SSE-framed, first data: line — is returned unchanged. Set JUSTDOMAIN_MCP_URL to use a different endpoint.

CLI

npx @reneturcios/domaincheck search acme.com acme.io
npx @reneturcios/domaincheck transfer acme.com
npx @reneturcios/domaincheck trademark "Acme Roasters"
npx @reneturcios/domaincheck --version

Output is the upstream's result as JSON. Exit codes: 0 on success, 1 on a runtime error (including an upstream failure), 2 on a usage error.

MCP server

npx -y @reneturcios/domaincheck mcp

MCP client config:

{
  "mcpServers": {
    "domaincheck": {
      "command": "npx",
      "args": ["-y", "@reneturcios/domaincheck", "mcp"]
    }
  }
}
Tools
  • search_domains — availability and pricing lookup.
    • domains (array of strings, preferred) — 1-200 fully-qualified names, each including its TLD
    • query (string, fallback) — free text; names without a TLD expand to com/io/ai/co/net. Ignored when domains is supplied. One of the two must be given; the server errors honestly when both are absent.
  • check_domain_transfer — transfer precheck for one domain.
    • domain (string, required) — one fully-qualified domain owned at another registrar
  • check_trademark — one name against the trademark registers.
    • name (string, required) — the proposed name, 2-120 characters
    • goods (string, optional) — what the name is for
    • classes (array of integers, optional) — Nice classes, each 1-45
    • registers (array of us/eu/il, optional) — all three when left out

Docker

docker run -i ghcr.io/cloudcorprecords/domaincheck
docker run --rm ghcr.io/cloudcorprecords/domaincheck search acme.com

Development

npm install
npm run build   # tsc -> dist/
npm test        # tsx --test test/*.test.ts (fake fetch, no network)
npm run dev     # run the CLI from source

License

MIT — Copyright (c) 2026 Rene Turcios

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