/shadcn-ui

name: shadcn-ui
description: Provides complete shadcn/ui component library patterns including installation, configuration, and implementation of accessible React components. Use when setting up shadcn/ui, installing components, building forms with React Hook Form and Zod, customizing themes with Tailwind CSS, or implementing UI patterns like buttons, dialogs, dropdowns, tables, and complex form layouts.
allowed-tools: Read, Write, Bash, Edit, Glob

shadcn/ui Component Patterns

Build accessible, customizable UI components with shadcn/ui, Radix UI, and Tailwind CSS.

Overview

• Components are **copied into your project** — you own and customize the code
• Built on **Radix UI** primitives for full accessibility
• Styled with **Tailwind CSS** and CSS variables for theming
• CLI-based installation: `npx shadcn@latest add <component>`

When to Use

Activate when user requests involve:

• "Set up shadcn/ui", "initialize shadcn", "add shadcn components"
• "Install button/input/form/dialog/card/select/toast/table/chart"
• "React Hook Form", "Zod validation", "form with validation"
• "accessible components", "Radix UI", "Tailwind theme"
• "shadcn button", "shadcn dialog", "shadcn sheet", "shadcn table"
• "dark mode", "CSS variables", "custom theme"
• "charts with Recharts", "bar chart", "line chart", "pie chart"

Quick Reference

Available Components

| Component | Install Command | Description | |-----------|----------------|-------------| | `button` | `npx shadcn@latest add button` | Variants: default, destructive, outline, secondary, ghost, link | | `input` | `npx shadcn@latest add input` | Text input field | | `form` | `npx shadcn@latest add form` | React Hook Form integration with validation | | `card` | `npx shadcn@latest add card` | Container with header, content, footer | | `dialog` | `npx shadcn@latest add dialog` | Modal overlay | | `sheet` | `npx shadcn@latest add sheet` | Slide-over panel (top/right/bottom/left) | | `select` | `npx shadcn@latest add select` | Dropdown select | | `toast` | `npx shadcn@latest add toast` | Notification toasts | | `table` | `npx shadcn@latest add table` | Data table | | `menubar` | `npx shadcn@latest add menubar` | Desktop-style menubar | | `chart` | `npx shadcn@latest add chart` | Recharts wrapper with theming | | `textarea` | `npx shadcn@latest add textarea` | Multi-line text input | | `checkbox` | `npx shadcn@latest add checkbox` | Checkbox input | | `label` | `npx shadcn@latest add label` | Accessible form label |

Instructions

Initialize Project

# New Next.js project
npx create-next-app@latest my-app --typescript --tailwind --eslint --app
cd my-app
npx shadcn@latest init

# Existing project
npm install tailwindcss-animate class-variance-authority clsx tailwind-merge lucide-react
npx shadcn@latest init

# Install components
npx shadcn@latest add button input form card dialog select toast

Basic Component Usage

// Button with variants and sizes
import { Button } from "@/components/ui/button"

<Button variant="default">Default</Button>
<Button variant="destructive" size="sm">Delete</Button>
<Button variant="outline" disabled>Loading...</Button>

Form with Zod Validation

"use client"

import { zodResolver } from "@hookform/resolvers/zod"
import { useForm } from "react-hook-form"
import { z } from "zod"
import { Button } from "@/components/ui/button"
import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from "@/components/ui/form"
import { Input } from "@/components/ui/input"

const formSchema = z.object({
  email: z.string().email("Invalid email"),
  password: z.string().min(8, "Password must be at least 8 characters"),
})

export function LoginForm() {
  const form = useForm<z.infer<typeof formSchema>>({
    resolver: zodResolver(formSchema),
    defaultValues: { email: "", password: "" },
  })

  return (
    <Form {...form}>
      <form onSubmit={form.handleSubmit(console.log)} className="space-y-4">
        <FormField name="email" control={form.control} render={({ field }) => (
          <FormItem>
            <FormLabel>Email</FormLabel>
            <FormControl><Input type="email" {...field} /></FormControl>
            <FormMessage />
          </FormItem>
        )} />
        <FormField name="password" control={form.control} render={({ field }) => (
          <FormItem>
            <FormLabel>Password</FormLabel>
            <FormControl><Input type="password" {...field} /></FormControl>
            <FormMessage />
          </FormItem>
        )} />
        <Button type="submit">Login</Button>
      </form>
    </Form>
  )
}

See [references/forms-and-validation.md](references/forms-and-validation.md) for advanced multi-field forms, contact forms with API submission, and login card patterns.

Dialog (Modal)

import { Button } from "@/components/ui/button"
import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogTrigger } from "@/components/ui/dialog"

<Dialog>
  <DialogTrigger asChild>
    <Button variant="outline">Open</Button>
  </DialogTrigger>
  <DialogContent>
    <DialogHeader>
      <DialogTitle>Edit Profile</DialogTitle>
    </DialogHeader>
    {/* content */}
  </DialogContent>
</Dialog>

Toast Notification

// 1. Add <Toaster /> to app/layout.tsx
import { Toaster } from "@/components/ui/toaster"

// 2. Use in components
import { useToast } from "@/components/ui/use-toast"

const { toast } = useToast()
toast({ title: "Success", description: "Changes saved." })
toast({ variant: "destructive", title: "Error", description: "Something went wrong." })

Bar Chart

import { Bar, BarChart, CartesianGrid, XAxis } from "recharts"
import { ChartContainer, ChartTooltipContent } from "@/components/ui/chart"

const chartConfig = {
  desktop: { label: "Desktop", color: "var(--chart-1)" },
} satisfies import("@/components/ui/chart").ChartConfig

<ChartContainer config={chartConfig} className="min-h-[200px] w-