CLI Overview

vx provides a comprehensive command-line interface for managing development tools, project environments, and development workflows.

Basic Syntax

# Subcommand mode
vx [OPTIONS] <COMMAND> [ARGS]

# Direct execution mode (transparent proxy)
vx [OPTIONS] <TOOL> [TOOL_ARGS]

Global Options

Option	Description
--verbose, -v	Enable verbose output
--debug	Enable debug output
--use-system-path	Use system PATH instead of vx-managed tools
--no-auto-install	Disable auto-installation of missing tools
--help, -h	Show help
--version, -V	Show version

Commands at a Glance

Tool Management

Command	Alias	Description
install	i	Install tool versions (vx install node@22 python@3.12)
uninstall	—	Remove an installed tool version
list	ls	List installed tools and available runtimes
versions	—	Show available versions for a tool
which	where	Show the path of the currently active tool
switch	—	Switch to a different installed version
search	—	Search for available tools
test	—	Test runtime availability and provider functionality
global	g	Manage globally installed packages (isolated)

Project Management

Command	Alias	Description
init	—	Initialize a new vx.toml for the project
add	—	Add a tool requirement to vx.toml
remove	rm	Remove a tool from vx.toml
sync	—	Sync project tools with vx.toml
lock	—	Generate/update vx.lock for reproducible environments
check	—	Check version constraints and tool availability
bundle	—	Offline development environment packaging
analyze	—	Analyze project dependencies, scripts, and tools

Scripts & Environment

Command	Description
run	Run scripts defined in vx.toml
dev	Enter development environment (interactive shell)
setup	Install all project tools and run setup hooks
env	Manage virtual environments

Configuration & Shell

Command	Alias	Description
config	cfg	Manage global and project configuration
shell	—	Shell integration (init, completions)

Extensions & Plugins

Command	Alias	Description
ext	extension	Manage vx extensions
x	—	Execute extension commands
plugin	—	Manage provider plugins

System & Maintenance

Command	Description
info	Show system information, capabilities, and diagnostics
metrics	View execution performance metrics
cache	Cache management (info, list, prune, purge)
self-update	Update vx itself
version	Show vx version
migrate	Migrate configuration and data formats
hook	Manage lifecycle hooks
services	Development service management
container	Container/Dockerfile management
auth	Authentication management

Direct Tool Execution

Run any managed tool by using it as the command:

vx node --version        # Run Node.js
vx python script.py      # Run Python script
vx go build ./...        # Build Go project
vx cargo test            # Run Rust tests
vx uv run pytest         # Run Python tests via uv

Tools are automatically installed on first use. Dependencies are resolved and installed as well (e.g., vx npm install ensures Node.js is available).

Package Execution Syntax

Execute packages on-demand using the unified syntax:

vx <ecosystem>[@runtime_version]:<package>[@version][::executable] [args...]

Examples

# Run package executables
vx npm:typescript::tsc --version     # TypeScript compiler
vx pip:httpie::http GET example.com  # HTTPie client
vx cargo:ripgrep::rg "pattern" .     # ripgrep search

# Scoped npm packages
vx npm:@biomejs/biome::biome check .

# With version pinning
vx npm:typescript@5.3::tsc --version
vx pip:ruff@0.3 check .

# With runtime version
vx npm@20:typescript::tsc --version  # Use Node.js 20

Supported Ecosystems

Ecosystem	Runtime	Example
npm	Node.js	vx npm:typescript::tsc
pip / uv	Python	vx pip:httpie::http
cargo	Rust	vx cargo:ripgrep::rg
go	Go	vx go:golangci-lint
bun	Bun	vx bun:typescript::tsc
yarn / pnpm	Node.js	vx yarn:typescript::tsc

Use :: when the package name differs from the executable name.

Exit Codes

Code	Meaning
0	Success
1	General error
2	Command not found
3	Tool not installed
4	Configuration error

Environment Variables

Variable	Description
VX_HOME	Override vx data directory
VX_ENV	Current environment name
VX_AUTO_INSTALL	Enable/disable auto-install (true/false)
VX_VERBOSE	Enable verbose output
VX_DEBUG	Enable debug output
VX_CDN_ENABLED	Enable CDN acceleration

Getting Help

# General help
vx --help

# Command-specific help
vx install --help
vx env --help
vx global --help