CLI

IMPORTANT: Only use the flags documented below. Do not invent or guess flags — if a flag isn’t listed here, it doesn’t exist. The CLI auto-detects the package manager from the project’s lockfile; there is no --package-manager flag.

Contents

• Commands: init, apply, add (dry-run, smart merge), search, view, docs, info, build
• Templates: next, vite, start, react-router, astro
• Presets: named, code, URL formats and fields
• Switching presets

Commands

init — Initialize or create a project

Initializes shadcn/ui in an existing project or creates a new project (when --name is provided). Optionally installs components in the same step.

npx shadcn@latest create is an alias for npx shadcn@latest init.

apply — Apply a preset to an existing project

Applies a preset to an existing project, overwriting preset-driven config, fonts, CSS variables, and detected UI components.

[preset] is a shorthand for --preset <preset>. If both are provided, they must match. If no preset is provided, the CLI offers to open the custom preset builder on ui.shadcn.com/create.

add — Add components

IMPORTANT: To compare local components against upstream or to preview changes, ALWAYS use npx shadcn@latest add <component> --dry-run, --diff, or --view. NEVER fetch raw files from GitHub or other sources manually. The CLI handles registry resolution, file paths, and CSS diffing automatically.

Accepts component names, registry-prefixed names (@magicui/shimmer-button), GitHub item addresses (owner/repo/item), URLs, or local paths.

Dry-Run Mode

Use --dry-run to preview what add would do without writing any files. --diff and --view both imply --dry-run.

When to use dry-run:

• When the user asks “what files will this add?” or “what will this change?” — use --dry-run.
• Before overwriting existing components — use --diff to preview the changes first.
• When the user wants to inspect component source code without installing — use --view.
• When checking what CSS changes would be made to globals.css — use --diff globals.css.
• When the user asks to review or audit third-party registry code before installing — use --view to inspect the source.

npx shadcn@latest add --dry-run vs npx shadcn@latest view: Prefer npx shadcn@latest add --dry-run/--diff/--view over npx shadcn@latest view when the user wants to preview changes to their project. npx shadcn@latest view only shows raw registry metadata. npx shadcn@latest add --dry-run shows exactly what would happen in the user’s project: resolved file paths, diffs against existing files, and CSS updates. Use npx shadcn@latest view only when the user wants to browse registry info without a project context.

Smart Merge from Upstream

See Updating Components in SKILL.md for the full workflow.

search — Search registries

Fuzzy search across registries. Also aliased as npx shadcn@latest list. Supports namespaces (@acme), public GitHub registry sources (owner/repo), and registry catalog URLs. Without -q, lists all items. When no registries are passed, searches every registry configured in components.json.

view — View item details

Displays item info including file contents. Examples: npx shadcn@latest view @shadcn/button, npx shadcn@latest view owner/repo/item.

docs — Get component documentation URLs

Outputs resolved URLs for component documentation, examples, and API references. Accepts one or more component names. Fetch the URLs to get the actual content.

Example output for npx shadcn@latest docs input button:

Some components include an api link to the underlying library (e.g. cmdk for the command component).

diff — Check for updates

Do not use this command. Use npx shadcn@latest add --diff instead.

info — Project information

Displays project info and components.json configuration. Run this first to discover the project’s framework, aliases, Tailwind version, and resolved paths.

Project Info fields:

Components.json fields:

Links fields:

The info output includes a Links section with templated URLs for component docs, source, and examples. For resolved URLs, use npx shadcn@latest docs <component> instead.

build — Build a custom registry

Builds registry.json into individual JSON files for distribution. Default input: ./registry.json, default output: ./public/r.

For authoring rules, include, item definitions, registryDependencies, and GitHub registry behavior, see registry.md.

Templates

All templates support monorepo scaffolding via the --monorepo flag. When passed, the CLI uses a monorepo-specific template directory (e.g. next-monorepo, vite-monorepo). When neither --monorepo nor --no-monorepo is passed, the CLI prompts interactively. Laravel does not support monorepo scaffolding.

Presets

Three ways to specify a preset via --preset:

1. Named: --preset nova or --preset lyra
2. Code: --preset a2r6bw (version-prefixed base62 string, e.g. a2r6bw or b0)
3. URL: --preset "https://ui.shadcn.com/init?base=radix&style=nova&..."

IMPORTANT: Never try to decode, fetch, or resolve preset codes manually. Preset codes are opaque — pass them directly to npx shadcn@latest init --preset <code> and let the CLI handle resolution. Use npx shadcn@latest apply --preset <code> when overwriting an existing project’s preset.

Switching Presets

Ask the user first: overwrite, merge, or skip existing components?

• Overwrite / Re-install → npx shadcn@latest apply --preset <code>. Overwrites all detected component files with the new preset styles. Use when the user hasn’t customized components.
• Merge → npx shadcn@latest init --preset <code> --force --no-reinstall, then run npx shadcn@latest info to get the list of installed components and use the smart merge workflow to update them one by one, preserving local changes. Use when the user has customized components.
• Skip → npx shadcn@latest init --preset <code> --force --no-reinstall. Only updates config and CSS variables, leaves existing components as-is.

Always run preset commands inside the user’s project directory. apply only works in an existing project with a components.json file. The CLI automatically preserves the current base (base vs radix) from components.json. If you must use a scratch/temp directory (e.g. for --dry-run comparisons), pass --base <current-base> explicitly — preset codes do not encode the base.