MCPInstall

json-render-shadcn

Pre-built shadcn/ui components for json-render. Use when working with @json-render/shadcn, adding standard UI components to a catalog, or building web UIs with Radix UI + Tailwind CSS components.

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/vercel-labs/json-render --skill json-render-shadcn
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads json-render-shadcn automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

@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

FAQ

What does the json-render-shadcn skill do?

Pre-built shadcn/ui components for json-render. Use when working with @json-render/shadcn, adding standard UI components to a catalog, or building web UIs with Radix UI + Tailwind CSS components.

How do I install json-render-shadcn?

Run npx skills add https://github.com/vercel-labs/json-render --skill json-render-shadcn in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/json-render-shadcn/ (personal) or .claude/skills/json-render-shadcn/ (project).

Which AI agents can use json-render-shadcn?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is json-render-shadcn safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains json-render-shadcn?

It is published by vercel-labs in vercel-labs/json-render, and it is an official skill from the maker of the technology it covers. It has 167 recorded installs.

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