---
title: "citty"
description: "Composable CLI builder with typed argument definitions, nested subcommands, auto-generated usage output and lazy command loading."
canonical: "https://vibing.inc/library/citty-vg-0964"
category: "Dev Utilities & Vibe-Coding Tooling"
subcategory: "UnJS toolkit"
license: "MIT"
author: "UnJS / Pooya Parsa (@pi0)"
source: "https://unjs.io/packages/citty"
---

# citty
Composable CLI builder with typed argument definitions, nested subcommands, auto-generated usage output and lazy command loading.
## Facts
- Source: https://unjs.io/packages/citty
- Category: Dev Utilities & Vibe-Coding Tooling / UnJS toolkit
- Author: UnJS / Pooya Parsa (@pi0)
- Licence: MIT
- Tags: cli, typescript, unjs, dx
## Why it's a gem
The nicest small CLI framework in JS, hidden inside the UnJS package wall.
---
Listed in The Vibeary: https://vibing.inc/library/citty-vg-0964 · JSON: https://vibing.inc/api/public/library/gems/citty-vg-0964