install

Additional install commands

macOS

Homebrewverified · 100%

brew install tldx

local Homebrew formula metadata

Linux

Nixverified · 92%

nix profile install nixpkgs#tldx

nixpkgs package indexes · pkgs/by-name/tl/tldx/package.nix · source: api.github.com

Windows

Windows Package Managerverified · 92%

winget install --id brandonyoungdev.tldx -e

Windows Package Manager source index · brandonyoungdev.tldx · source: cdn.winget.microsoft.com

overview

Package summary

Domain Availability Research Tool

Project links

Commands and aliases

tldx

history

Project history and usage

tldx is a Go command-line tool for brainstorming available domain names by combining keywords with prefixes, suffixes, TLD sets, regex-generated names, and concurrent RDAP availability checks.

Project history

The author's official introduction, dated 2025-05-31, says tldx was built to make domain-name search faster and less annoying for side projects by running checks locally. The README frames the tool as fast domain brainstorming with keyword permutations and availability filtering.

The ChangeLog shows a rapid first public release cycle around 2025-05-31 and 2025-06-01, followed by v1.1.0 adding formatted output, RDAP as the primary domain-ownership source with whois and DNS fallbacks, and TLD presets. Later releases added file input, MCP support, and custom presets.

Adoption history

tldx is young compared with the other tools in this batch, but it maps neatly to modern terminal culture: indie hackers, technical founders, and developers checking many naming candidates quickly. The official blog explicitly names technical founders, indie hackers, and naming brainstorms as target users.

The supplied package-manager facts show Homebrew, Nix, and winget availability. That package spread makes sense for a single-binary Go CLI intended for quick installation across developer laptops.

How it is used

Users pass one or more keywords and optionally choose prefixes, suffixes, TLDs, presets, regex generation, output format, input file or stdin, and only-available filtering. The README documents text, JSON, JSON stream, JSON array, CSV, and grouped output modes.

For package nerds, tldx is interesting as a purpose-built network CLI that wraps RDAP, DNS, and whois behavior into a composable terminal workflow, with config limited to reusable TLD presets.

Why package nerds care

tldx is significant in a smaller modern-CLI sense: it packages a web-search-adjacent workflow into a local, scriptable binary with structured outputs and package-manager distribution.

Its later MCP server support also shows how recent CLI tools increasingly expose both human terminal workflows and agent-facing command surfaces.

Timeline

2025-05-31: Official introduction published by the author.
2025-06-01: ChangeLog lists 1.0.0.
2025-06-05: ChangeLog lists v1.1.0 with RDAP primary source, output formatting, and TLD presets.
2025-07-18: ChangeLog lists v1.3.0 adding file input.
2026-05-24: ChangeLog lists v1.4.0 adding MCP support.
2026-06-03: ChangeLog lists v1.5.0 adding custom presets.

Related projects

RDAP is the primary availability-checking protocol documented in the README and ChangeLog.
DNS and whois are documented fallback mechanisms for domain ownership checks.
Model Context Protocol support is provided by the tldx mcp command in newer versions.

Sources

https://brandonyoung.dev/blog/introducing-tldx/ official author introduction, motivation, features, target users, and install notes
https://github.com/brandonyoungdev/tldx README for current feature set, usage, formats, presets, and config path
https://github.com/brandonyoungdev/tldx/blob/main/CHANGELOG.md for release chronology and feature additions
source_facts.package-manager for Homebrew, Nix, and winget packaging

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

narrow executable package without higher-risk signals

Signals

metadata:no-higher-risk-signals

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 6 platform targets.
Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

local files

Configuration and credential file locations

These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.

Configuration files

Config paths the tool may read or write during local use.

Unix: ~/.config/tldx/presets.toml
Windows: %APPDATA%\tldx\presets.toml

executables

Installed executables

Command	Kind	Exposure	Note
`tldx`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version1.5.0

manager updated2026-06-03

local dataok

upstreamcurrent

latest detectedv1.5.0

https://github.com/brandonyoungdev/tldx

okNo freshness warnings were generated.

install metadata

Package metadata

Package key	brew:tldx
Version	1.5.0
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/tldx
Homepage	https://brandonyoung.dev/blog/introducing-tldx/
Repository	https://github.com/brandonyoungdev/tldx
Upstream docs	https://github.com/brandonyoungdev/tldx#readme
License	Apache-2.0
Source archive	https://github.com/brandonyoungdev/tldx/archive/refs/tags/v1.5.0.tar.gz
Last updated	2026-06-03T03:53:28Z
Pulse	updated
Build dependencies	go
Bottle	available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	tldx
Version Scheme	0
Revision	0
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Nix95%

tldx

nix profile install nixpkgs#tldx

normalized package name match
Matched by: Tldx

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/tl/tldx/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

winget95%

brandonyoungdev.tldx

winget install --id brandonyoungdev.tldx -e

normalized package name match
Matched by: Tldx

Windows Package Manager source index · cdn.winget.microsoft.com · Windows Package Manager source index: brandonyoungdev.tldx from https://cdn.winget.microsoft.com/cache/source.msix

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/tldx.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated configuration and credential file locations
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install tldx with Homebrew, Nix, winget