Quickstart

tldx - Domain Availability Research Tool

Overview

tldx is a domain availability research tool with smart keyword-based permutations and fast concurrent RDAP availability checks. Great for finding available domains for projects and startups.

Quick Start

Check domain availability

sc tldx check domains "keyword1 keyword2"

Show only available domains

sc tldx check available "keyword1 keyword2"

Show available TLD presets

sc tldx show presets

Passthrough to tldx CLI

sc tldx _ <tldx-args>

Key Features

• Smart Permutations: Keyword-based domain permutations with prefixes and suffixes
• Regex Support: Pattern matching for generating domain combinations
• Fast Checks: Concurrent RDAP availability checks
• Multiple Formats: Output in text, json, json-stream, json-array, csv, grouped, grouped-tld
• TLD Presets: Quick selection of common or curated TLD sets
• Length Filtering: Optional filtering by domain length

Installation

go install github.com/brandonyoungdev/tldx@latest

Or via package managers:

• macOS (Homebrew): brew install tldx
• Windows (winget): winget install tldx
• Arch Linux (AUR): Available in AUR

Usage Examples

Basic availability check

tldx myproject

Check specific TLDs

tldx myproject --tlds com,io,ai

Add prefixes and suffixes

tldx project --prefixes get,my,use --suffixes ify,ly

Show only available domains

tldx myproject --only-available

Output as JSON

tldx myproject --format json

Use TLD preset

tldx myproject --tld-preset popular

Notes

• Results stream as they're found for immediate feedback
• Use --show-stats to see statistics at the end
• Supports brace expansion on macOS and Linux
• Great for technical founders and indie hackers