shadcn

作成者: vercel

json-render用のビルトインshadcn/uiコンポーネント。@json-render/shadcnを使用する際、カタログに標準UIコンポーネントを追加する際、またはWeb UIを構築する際に使用します。

npx skills add https://github.com/vercel-labs/json-render --skill shadcn

@json-render/shadcn

Pre-built shadcn/ui component definitions and implementations for json-render. Provides 36 components built on Radix UI + Tailwind CSS.

Two Entry Points

Entry PointExportsUse For
@json-render/shadcn/catalogshadcnComponentDefinitionsCatalog schemas (no React dependency, safe for server)
@json-render/shadcnshadcnComponentsReact implementations

Usage Pattern

Pick the components you need from the standard definitions. Do not spread all definitions -- explicitly select what your app uses:

import { defineCatalog } from "@json-render/core";
import { schema } from "@json-render/react/schema";
import { shadcnComponentDefinitions } from "@json-render/shadcn/catalog";
import { defineRegistry } from "@json-render/react";
import { shadcnComponents } from "@json-render/shadcn";

// Catalog: pick definitions
const catalog = defineCatalog(schema, {
  components: {
    Card: shadcnComponentDefinitions.Card,
    Stack: shadcnComponentDefinitions.Stack,
    Heading: shadcnComponentDefinitions.Heading,
    Button: shadcnComponentDefinitions.Button,
    Input: shadcnComponentDefinitions.Input,
  },
  actions: {},
});

// Registry: pick matching implementations
const { registry } = defineRegistry(catalog, {
  components: {
    Card: shadcnComponents.Card,
    Stack: shadcnComponents.Stack,
    Heading: shadcnComponents.Heading,
    Button: shadcnComponents.Button,
    Input: shadcnComponents.Input,
  },
});

State actions (setState, pushState, removeState) are built into the React schema and handled by ActionProvider automatically. No need to declare them.

Extending with Custom Components

Add custom components alongside standard ones:

const catalog = defineCatalog(schema, {
  components: {
    // Standard
    Card: shadcnComponentDefinitions.Card,
    Stack: shadcnComponentDefinitions.Stack,

    // Custom
    Metric: {
      props: z.object({
        label: z.string(),
        value: z.string(),
        trend: z.enum(["up", "down", "neutral"]).nullable(),
      }),
      description: "KPI metric display",
    },
  },
  actions: {},
});

const { registry } = defineRegistry(catalog, {
  components: {
    Card: shadcnComponents.Card,
    Stack: shadcnComponents.Stack,
    Metric: ({ props }) => <div>{props.label}: {props.value}</div>,
  },
});

Available Components

Layout

  • Card - Container with optional title, description, maxWidth, centered
  • Stack - Flex container with direction, gap, align, justify
  • Grid - Grid layout with columns (number) and gap
  • Separator - Visual divider with orientation

Navigation

  • Tabs - Tabbed navigation with tabs array, defaultValue, value
  • Accordion - Collapsible sections with items array and type (single/multiple)
  • Collapsible - Single collapsible section with title
  • Pagination - Page navigation with totalPages and page

Overlay

  • Dialog - Modal dialog with title, description, openPath
  • Drawer - Bottom drawer with title, description, openPath
  • Tooltip - Hover tooltip with content and text
  • Popover - Click-triggered popover with trigger and content
  • DropdownMenu - Dropdown with label and items array

Content

  • Heading - Heading text with level (h1-h4)
  • Text - Paragraph with variant (body, caption, muted, lead, code)
  • Image - Image with alt, width, height
  • Avatar - User avatar with src, name, size
  • Badge - Status badge with text and variant (default, secondary, destructive, outline)
  • Alert - Alert banner with title, message, type (success, warning, info, error)
  • Carousel - Scrollable carousel with items array
  • Table - Data table with columns (string[]) and rows (string[][])

Feedback

  • Progress - Progress bar with value, max, label
  • Skeleton - Loading placeholder with width, height, rounded
  • Spinner - Loading spinner with size and label

Input

  • Button - Button with label, variant (primary, secondary, danger), disabled
  • Link - Anchor link with label and href
  • Input - Text input with label, name, type, placeholder, value, checks
  • Textarea - Multi-line input with label, name, placeholder, rows, value, checks
  • Select - Dropdown select with label, name, options (string[]), value, checks
  • Checkbox - Checkbox with label, name, checked, checks, validateOn
  • Radio - Radio group with label, name, options (string[]), value, checks, validateOn
  • Switch - Toggle switch with label, name, checked, checks, validateOn
  • Slider - Range slider with label, min, max, step, value
  • Toggle - Toggle button with label, pressed, variant
  • ToggleGroup - Group of toggles with items, type, value
  • ButtonGroup - Button group with buttons array and selected

Built-in Actions (from @json-render/react)

These are built into the React schema and handled by ActionProvider automatically. They appear in prompts without needing to be declared in the catalog.

  • setState - Set a value at a state path ({ statePath, value })
  • pushState - Push a value onto an array ({ statePath, value, clearStatePath? })
  • removeState - Remove an array item by index ({ statePath, index })
  • validateForm - Validate all fields, write { valid, errors } to state ({ statePath? })

Validation Timing (validateOn)

All form components support validateOn to control when validation runs:

  • "change" — validate on every input change (default for Select, Checkbox, Radio, Switch)
  • "blur" — validate when field loses focus (default for Input, Textarea)
  • "submit" — validate only on form submission

Important Notes

  • The /catalog entry point has no React dependency -- use it for server-side prompt generation
  • Components use Tailwind CSS classes -- your app must have Tailwind configured
  • Component implementations use bundled shadcn/ui primitives (not your app's components/ui/)
  • All form inputs support checks for validation (type + message pairs) and validateOn for timing
  • Events: inputs emit change/submit/focus/blur; buttons emit press; selects emit change/select

vercelのその他のスキル

vercel
vercel
ローカル開発およびテスト用のエミュレートされたVercel REST API。ユーザーがローカルでVercel APIエンドポイントとやり取りしたり、Vercel統合をテストしたりする必要がある場合に使用します。
cron-jobs
vercel
Vercel Cron Jobsの設定とベストプラクティス。vercel.jsonでスケジュールタスクを追加、編集、デバッグする際に使用します。
codegen
vercel
json-renderのコード生成ユーティリティ。UI仕様からコードを生成する際、カスタムコードエクスポーターの構築、仕様の走査、プロパティのシリアライズなどに使用します。
next-best-practice
vercel
Next.jsのベストプラクティス - ファイル規約、RSC境界、データパターン、非同期API、メタデータ、エラーハンドリング、ルートハンドラ、画像/フォント最適化、…
benchmark-sandbox
vercel
Vercel Sandbox上でvercel-pluginの評価シナリオを実行し、ローカルのWezTermパネルの代わりに使用します。Claude Codeとプラグインがプリインストールされた一時的なマイクロVMをプロビジョニングします…
write-guide
vercel
現実世界のユースケースを段階的な例を通じて教える技術ガイドを作成します。概念は読者が必要とするタイミングでのみ導入されます。
benchmark-testing
vercel
ベンチマークテストプロジェクトを作成し、起動して、現実的なシナリオ全体でvercel-pluginスキルインジェクションを実行します。隔離されたディレクトリを設定し、インストールし…
ai-gateway
vercel
Vercel AI Gatewayの専門的なガイダンス。モデルルーティング、プロバイダーのフェイルオーバー、コスト追跡、または統一された方法で複数のAIプロバイダーを管理する際に使用します。