feat: add new OpenSpec skills for change management and onboarding
- Created `openspec-ff-change` skill for fast-forward artifact creation. - Introduced `openspec-new-change` skill for structured change creation. - Developed `openspec-onboard` skill for guided onboarding through OpenSpec workflow. - Added `openspec-sync-specs` skill for syncing delta specs to main specs. - Implemented `openspec-verify-change` skill for verifying implementation against change artifacts. - Updated `.gitignore` to exclude OpenSpec generated files. - Added `skills-lock.json` to manage skill dependencies.
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---
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name: shadcn
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description: Manages shadcn components and projects — adding, searching, fixing, debugging, styling, and composing UI. Provides project context, component docs, and usage examples. Applies when working with shadcn/ui, component registries, presets, --preset codes, or any project with a components.json file. Also triggers for "shadcn init", "create an app with --preset", or "switch to --preset".
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user-invocable: false
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---
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# shadcn/ui
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A framework for building ui, components and design systems. Components are added as source code to the user's project via the CLI.
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> **IMPORTANT:** Run all CLI commands using the project's package runner: `npx shadcn@latest`, `pnpm dlx shadcn@latest`, or `bunx --bun shadcn@latest` — based on the project's `packageManager`. Examples below use `npx shadcn@latest` but substitute the correct runner for the project.
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## Current Project Context
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```json
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!`npx shadcn@latest info --json 2>/dev/null || echo '{"error": "No shadcn project found. Run shadcn init first."}'`
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```
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The JSON above contains the project config and installed components. Use `npx shadcn@latest docs <component>` to get documentation and example URLs for any component.
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## Principles
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1. **Use existing components first.** Use `npx shadcn@latest search` to check registries before writing custom UI. Check community registries too.
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2. **Compose, don't reinvent.** Settings page = Tabs + Card + form controls. Dashboard = Sidebar + Card + Chart + Table.
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3. **Use built-in variants before custom styles.** `variant="outline"`, `size="sm"`, etc.
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4. **Use semantic colors.** `bg-primary`, `text-muted-foreground` — never raw values like `bg-blue-500`.
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## Critical Rules
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These rules are **always enforced**. Each links to a file with Incorrect/Correct code pairs.
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### Styling & Tailwind → [styling.md](./rules/styling.md)
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- **`className` for layout, not styling.** Never override component colors or typography.
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- **No `space-x-*` or `space-y-*`.** Use `flex` with `gap-*`. For vertical stacks, `flex flex-col gap-*`.
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- **Use `size-*` when width and height are equal.** `size-10` not `w-10 h-10`.
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- **Use `truncate` shorthand.** Not `overflow-hidden text-ellipsis whitespace-nowrap`.
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- **No manual `dark:` color overrides.** Use semantic tokens (`bg-background`, `text-muted-foreground`).
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- **Use `cn()` for conditional classes.** Don't write manual template literal ternaries.
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- **No manual `z-index` on overlay components.** Dialog, Sheet, Popover, etc. handle their own stacking.
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### Forms & Inputs → [forms.md](./rules/forms.md)
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- **Forms use `FieldGroup` + `Field`.** Never use raw `div` with `space-y-*` or `grid gap-*` for form layout.
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- **`InputGroup` uses `InputGroupInput`/`InputGroupTextarea`.** Never raw `Input`/`Textarea` inside `InputGroup`.
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- **Buttons inside inputs use `InputGroup` + `InputGroupAddon`.**
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- **Option sets (2–7 choices) use `ToggleGroup`.** Don't loop `Button` with manual active state.
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- **`FieldSet` + `FieldLegend` for grouping related checkboxes/radios.** Don't use a `div` with a heading.
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- **Field validation uses `data-invalid` + `aria-invalid`.** `data-invalid` on `Field`, `aria-invalid` on the control. For disabled: `data-disabled` on `Field`, `disabled` on the control.
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### Component Structure → [composition.md](./rules/composition.md)
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- **Items always inside their Group.** `SelectItem` → `SelectGroup`. `DropdownMenuItem` → `DropdownMenuGroup`. `CommandItem` → `CommandGroup`.
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- **Use `asChild` (radix) or `render` (base) for custom triggers.** Check `base` field from `npx shadcn@latest info`. → [base-vs-radix.md](./rules/base-vs-radix.md)
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- **Dialog, Sheet, and Drawer always need a Title.** `DialogTitle`, `SheetTitle`, `DrawerTitle` required for accessibility. Use `className="sr-only"` if visually hidden.
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- **Use full Card composition.** `CardHeader`/`CardTitle`/`CardDescription`/`CardContent`/`CardFooter`. Don't dump everything in `CardContent`.
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- **Button has no `isPending`/`isLoading`.** Compose with `Spinner` + `data-icon` + `disabled`.
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- **`TabsTrigger` must be inside `TabsList`.** Never render triggers directly in `Tabs`.
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- **`Avatar` always needs `AvatarFallback`.** For when the image fails to load.
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### Use Components, Not Custom Markup → [composition.md](./rules/composition.md)
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- **Use existing components before custom markup.** Check if a component exists before writing a styled `div`.
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- **Callouts use `Alert`.** Don't build custom styled divs.
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- **Empty states use `Empty`.** Don't build custom empty state markup.
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- **Toast via `sonner`.** Use `toast()` from `sonner`.
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- **Use `Separator`** instead of `<hr>` or `<div className="border-t">`.
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- **Use `Skeleton`** for loading placeholders. No custom `animate-pulse` divs.
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- **Use `Badge`** instead of custom styled spans.
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### Icons → [icons.md](./rules/icons.md)
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- **Icons in `Button` use `data-icon`.** `data-icon="inline-start"` or `data-icon="inline-end"` on the icon.
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- **No sizing classes on icons inside components.** Components handle icon sizing via CSS. No `size-4` or `w-4 h-4`.
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- **Pass icons as objects, not string keys.** `icon={CheckIcon}`, not a string lookup.
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### CLI
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- **Never decode or fetch preset codes manually.** Pass them directly to `npx shadcn@latest init --preset <code>`.
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## Key Patterns
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These are the most common patterns that differentiate correct shadcn/ui code. For edge cases, see the linked rule files above.
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```tsx
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// Form layout: FieldGroup + Field, not div + Label.
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<FieldGroup>
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<Field>
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<FieldLabel htmlFor="email">Email</FieldLabel>
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<Input id="email" />
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</Field>
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</FieldGroup>
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// Validation: data-invalid on Field, aria-invalid on the control.
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<Field data-invalid>
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<FieldLabel>Email</FieldLabel>
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<Input aria-invalid />
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<FieldDescription>Invalid email.</FieldDescription>
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</Field>
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// Icons in buttons: data-icon, no sizing classes.
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<Button>
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<SearchIcon data-icon="inline-start" />
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Search
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</Button>
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// Spacing: gap-*, not space-y-*.
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<div className="flex flex-col gap-4"> // correct
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<div className="space-y-4"> // wrong
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// Equal dimensions: size-*, not w-* h-*.
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<Avatar className="size-10"> // correct
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<Avatar className="w-10 h-10"> // wrong
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// Status colors: Badge variants or semantic tokens, not raw colors.
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<Badge variant="secondary">+20.1%</Badge> // correct
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<span className="text-emerald-600">+20.1%</span> // wrong
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```
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## Component Selection
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| Need | Use |
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| -------------------------- | --------------------------------------------------------------------------------------------------- |
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| Button/action | `Button` with appropriate variant |
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| Form inputs | `Input`, `Select`, `Combobox`, `Switch`, `Checkbox`, `RadioGroup`, `Textarea`, `InputOTP`, `Slider` |
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| Toggle between 2–5 options | `ToggleGroup` + `ToggleGroupItem` |
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| Data display | `Table`, `Card`, `Badge`, `Avatar` |
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| Navigation | `Sidebar`, `NavigationMenu`, `Breadcrumb`, `Tabs`, `Pagination` |
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| Overlays | `Dialog` (modal), `Sheet` (side panel), `Drawer` (bottom sheet), `AlertDialog` (confirmation) |
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| Feedback | `sonner` (toast), `Alert`, `Progress`, `Skeleton`, `Spinner` |
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| Command palette | `Command` inside `Dialog` |
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| Charts | `Chart` (wraps Recharts) |
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| Layout | `Card`, `Separator`, `Resizable`, `ScrollArea`, `Accordion`, `Collapsible` |
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| Empty states | `Empty` |
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| Menus | `DropdownMenu`, `ContextMenu`, `Menubar` |
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| Tooltips/info | `Tooltip`, `HoverCard`, `Popover` |
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## Key Fields
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The injected project context contains these key fields:
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- **`aliases`** → use the actual alias prefix for imports (e.g. `@/`, `~/`), never hardcode.
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- **`isRSC`** → when `true`, components using `useState`, `useEffect`, event handlers, or browser APIs need `"use client"` at the top of the file. Always reference this field when advising on the directive.
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- **`tailwindVersion`** → `"v4"` uses `@theme inline` blocks; `"v3"` uses `tailwind.config.js`.
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- **`tailwindCssFile`** → the global CSS file where custom CSS variables are defined. Always edit this file, never create a new one.
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- **`style`** → component visual treatment (e.g. `nova`, `vega`).
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- **`base`** → primitive library (`radix` or `base`). Affects component APIs and available props.
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- **`iconLibrary`** → determines icon imports. Use `lucide-react` for `lucide`, `@tabler/icons-react` for `tabler`, etc. Never assume `lucide-react`.
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- **`resolvedPaths`** → exact file-system destinations for components, utils, hooks, etc.
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- **`framework`** → routing and file conventions (e.g. Next.js App Router vs Vite SPA).
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- **`packageManager`** → use this for any non-shadcn dependency installs (e.g. `pnpm add date-fns` vs `npm install date-fns`).
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See [cli.md — `info` command](./cli.md) for the full field reference.
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## Component Docs, Examples, and Usage
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Run `npx shadcn@latest docs <component>` to get the URLs for a component's documentation, examples, and API reference. Fetch these URLs to get the actual content.
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```bash
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npx shadcn@latest docs button dialog select
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```
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**When creating, fixing, debugging, or using a component, always run `npx shadcn@latest docs` and fetch the URLs first.** This ensures you're working with the correct API and usage patterns rather than guessing.
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## Workflow
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1. **Get project context** — already injected above. Run `npx shadcn@latest info` again if you need to refresh.
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2. **Check installed components first** — before running `add`, always check the `components` list from project context or list the `resolvedPaths.ui` directory. Don't import components that haven't been added, and don't re-add ones already installed.
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3. **Find components** — `npx shadcn@latest search`.
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4. **Get docs and examples** — run `npx shadcn@latest docs <component>` to get URLs, then fetch them. Use `npx shadcn@latest view` to browse registry items you haven't installed. To preview changes to installed components, use `npx shadcn@latest add --diff`.
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5. **Install or update** — `npx shadcn@latest add`. When updating existing components, use `--dry-run` and `--diff` to preview changes first (see [Updating Components](#updating-components) below).
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6. **Fix imports in third-party components** — After adding components from community registries (e.g. `@bundui`, `@magicui`), check the added non-UI files for hardcoded import paths like `@/components/ui/...`. These won't match the project's actual aliases. Use `npx shadcn@latest info` to get the correct `ui` alias (e.g. `@workspace/ui/components`) and rewrite the imports accordingly. The CLI rewrites imports for its own UI files, but third-party registry components may use default paths that don't match the project.
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7. **Review added components** — After adding a component or block from any registry, **always read the added files and verify they are correct**. Check for missing sub-components (e.g. `SelectItem` without `SelectGroup`), missing imports, incorrect composition, or violations of the [Critical Rules](#critical-rules). Also replace any icon imports with the project's `iconLibrary` from the project context (e.g. if the registry item uses `lucide-react` but the project uses `hugeicons`, swap the imports and icon names accordingly). Fix all issues before moving on.
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8. **Registry must be explicit** — When the user asks to add a block or component, **do not guess the registry**. If no registry is specified (e.g. user says "add a login block" without specifying `@shadcn`, `@tailark`, etc.), ask which registry to use. Never default to a registry on behalf of the user.
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9. **Switching presets** — Ask the user first: **reinstall**, **merge**, or **skip**?
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- **Reinstall**: `npx shadcn@latest init --preset <code> --force --reinstall`. Overwrites all components.
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- **Merge**: `npx shadcn@latest init --preset <code> --force --no-reinstall`, then run `npx shadcn@latest info` to list installed components, then for each installed component use `--dry-run` and `--diff` to [smart merge](#updating-components) it individually.
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- **Skip**: `npx shadcn@latest init --preset <code> --force --no-reinstall`. Only updates config and CSS, leaves components as-is.
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## Updating Components
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When the user asks to update a component from upstream while keeping their local changes, use `--dry-run` and `--diff` to intelligently merge. **NEVER fetch raw files from GitHub manually — always use the CLI.**
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1. Run `npx shadcn@latest add <component> --dry-run` to see all files that would be affected.
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2. For each file, run `npx shadcn@latest add <component> --diff <file>` to see what changed upstream vs local.
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3. Decide per file based on the diff:
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- No local changes → safe to overwrite.
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- Has local changes → read the local file, analyze the diff, and apply upstream updates while preserving local modifications.
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- User says "just update everything" → use `--overwrite`, but confirm first.
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4. **Never use `--overwrite` without the user's explicit approval.**
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## Quick Reference
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```bash
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# Create a new project.
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npx shadcn@latest init --name my-app --preset base-nova
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npx shadcn@latest init --name my-app --preset a2r6bw --template vite
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# Create a monorepo project.
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npx shadcn@latest init --name my-app --preset base-nova --monorepo
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npx shadcn@latest init --name my-app --preset base-nova --template next --monorepo
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# Initialize existing project.
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npx shadcn@latest init --preset base-nova
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npx shadcn@latest init --defaults # shortcut: --template=next --preset=base-nova
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# Add components.
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npx shadcn@latest add button card dialog
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npx shadcn@latest add @magicui/shimmer-button
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npx shadcn@latest add --all
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# Preview changes before adding/updating.
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npx shadcn@latest add button --dry-run
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npx shadcn@latest add button --diff button.tsx
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npx shadcn@latest add @acme/form --view button.tsx
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# Search registries.
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npx shadcn@latest search @shadcn -q "sidebar"
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npx shadcn@latest search @tailark -q "stats"
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# Get component docs and example URLs.
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npx shadcn@latest docs button dialog select
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# View registry item details (for items not yet installed).
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npx shadcn@latest view @shadcn/button
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```
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**Named presets:** `base-nova`, `radix-nova`
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**Templates:** `next`, `vite`, `start`, `react-router`, `astro` (all support `--monorepo`) and `laravel` (not supported for monorepo)
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**Preset codes:** Base62 strings starting with `a` (e.g. `a2r6bw`), from [ui.shadcn.com](https://ui.shadcn.com).
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## Detailed References
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- [rules/forms.md](./rules/forms.md) — FieldGroup, Field, InputGroup, ToggleGroup, FieldSet, validation states
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- [rules/composition.md](./rules/composition.md) — Groups, overlays, Card, Tabs, Avatar, Alert, Empty, Toast, Separator, Skeleton, Badge, Button loading
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- [rules/icons.md](./rules/icons.md) — data-icon, icon sizing, passing icons as objects
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- [rules/styling.md](./rules/styling.md) — Semantic colors, variants, className, spacing, size, truncate, dark mode, cn(), z-index
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- [rules/base-vs-radix.md](./rules/base-vs-radix.md) — asChild vs render, Select, ToggleGroup, Slider, Accordion
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- [cli.md](./cli.md) — Commands, flags, presets, templates
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- [customization.md](./customization.md) — Theming, CSS variables, extending components
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Block a user