Caja

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Component Libraries ​

Caja supports importing and exporting reusable components as .cjl (Caja Component Library) files. This enables sharing component sets across projects and teams.

Import & Export ​

Exporting ​

  1. Open the Assets tab in the Layers Panel
  2. Click the + menu → Export Components
  3. Select which components to include
  4. Save as a .cjl file

Importing ​

  1. Open the Assets tab in the Layers Panel
  2. Click the + menu → Import Components
  3. Select a .cjl file
  4. Components are added to your project's catalog

Via MCP ​

Agents can also manage the component library programmatically:

json
// List available components
{ "tool": "list_components" }

// Insert a component instance
{
  "tool": "insert_component",
  "params": {
    "component_id": "comp_button",
    "parent_id": "root",
    "overrides": {
      "label": { "properties": { "content": "Sign Up" } }
    }
  }
}

The .cjl Format ​

A .cjl file is a JSON package containing one or more components with metadata:

json
{
  "name": "My Library",
  "version": "1.0.0",
  "components": [
    {
      "id": "comp_1",
      "name": "Card",
      "tags": ["layout"],
      "frame": { ... }
    }
  ]
}

Each component stores its full frame tree, so instances are self-contained.

Official Libraries ​

Pre-built component libraries for popular design systems. Import them into any Caja project.

Bootstrap ​

A set of common Bootstrap components adapted for Tailwind CSS.

Includes: Button, Card, Navbar, Modal, Alert, Badge, Breadcrumb, Pagination, Form controls.

Coming Soon

This library is currently in development.

Radix ​

Components matching the Radix UI primitives — unstyled, accessible building blocks.

Includes: Dialog, Popover, Dropdown Menu, Tabs, Toggle Group, Accordion, Tooltip, Select.

Coming Soon

This library is currently in development.

Ark ​

Components based on Ark UI — headless, framework-agnostic primitives.

Includes: Accordion, Carousel, Checkbox, Combobox, Date Picker, Dialog, Menu, Slider, Tabs, Toast.

Coming Soon

This library is currently in development.

shadcn/ui ​

Components inspired by shadcn/ui — beautifully designed, copy-paste ready.

Includes: Button, Input, Card, Sheet, Table, Command, Avatar, Calendar, Skeleton.

Coming Soon

This library is currently in development.

Community Libraries ​

Anyone can create and share .cjl files. To submit a community library, open a PR on the Caja repo.