tldx

Fast CLI to bulk-check domains via RDAP & MCP

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Finding the perfect domain name is often half the battle for any new project. tldx is a blazing-fast, concurrent command-line interface (CLI) tool that efficiently generates and checks domain availability in bulk using the modern RDAP protocol. You can mix keywords, prefixes, suffixes, or even use regular expressions to generate a wide array of options, and then stream the results to stdout, JSON, or CSV for easy analysis. What's more, tldx includes an MCP server, empowering AI agents like Claude to brainstorm and verify domains for you automatically. Install it easily via Homebrew (brew install tldx) and say goodbye to frustrating rate-limits and outdated whois parsing. It is 100 percent Free and Open Source, built robustly in Go.