optimizely-model

name	optimizely-model
description	This skill should be used when the user asks to "create a content type", "model a BlogPage", "define a display template", "create a contract", "set up SEO fields", "convert JSON schema to TypeScript", "make an Article type", "add a Hero component", "model a Card display template", or mentions content type modeling, display templates, or contracts for Optimizely CMS.

Optimizely Content Modeling

This skill helps you create content type definitions, display templates, and contracts for Optimizely CMS projects.

When to Use This Skill

Use this skill when the user wants to:

• Create a new content type (page, component/block, experience, folder, media)
• Create a new display template for visual variations
• Create a new contract (reusable property set that content types can extend)
• Model content based on existing CMS definitions (content types, display templates, or contracts retrieved via config pull)

Before You Start: Locate the Components Directory

The first step is to find where content type files should be created. Do this by reading optimizely.config.mjs:

1. Search for optimizely.config.mjs in the project root
2. Look for the components field in the config - this tells you where to create files
3. If the config file doesn't exist, stop and tell the user:

   "I need an optimizely.config.mjs file to determine where to create content types. You can either:

   • Use the optimizely-setup skill to set up the full Optimizely SDK configuration
   • Create the config file manually with a components field pointing to your components directory"

Example config structure:

import { buildConfig } from '@optimizely/cms-sdk';

export default buildConfig({
  components: ['./src/components/**.tsx'],
});

Creating Content Types

Content types are created using the contentType() function from @optimizely/cms-sdk.

File Structure

Create a file named after the content type (e.g., Article.tsx, BlogPage.tsx) in the components directory:

import { contentType } from '@optimizely/cms-sdk';

export const ArticleContentType = contentType({
  key: 'Article',
  displayName: 'Article',
  baseType: '_page',
  properties: {
    heading: {
      type: 'string',
      displayName: 'Article Heading',
      group: 'content',
      indexingType: 'searchable',
    },
    body: {
      type: 'richText',
      displayName: 'Article Body',
      group: 'content',
    },
  },
});

Base Types

Choose the appropriate baseType: '_page', '_component', '_experience', '_folder', '_image', '_media', or '_video'. See references/base-types.md for detailed information.

Property Types

Common property types include 'string', 'richText', 'boolean', 'integer', 'float', 'dateTime', 'url', 'content', 'contentReference', 'array', and 'component'.

Numeric types ('integer' and 'float') support minimum and maximum constraints:

price: {
  type: 'float',
  minimum: 0.01,
  maximum: 999.99
}

See references/property-types.md for the complete list with examples.

Property Metadata Fields

CRITICAL: All properties support these metadata fields - use them when specified by the user:

Field	Description	Example
displayName	Label in CMS UI	'Article Title'
description	Help text for editors	'The main heading for this article'
group	Tab/section in editor	'content', 'seo'
sortOrder	Display order in group	1, 5, 10
isRequired	Must have a value	true, false
isLocalized	Different value per language	true, false
indexingType	Search indexing behavior	'searchable', 'queryable'

When user says → Use this field:

• "display name", "label" → displayName
• "description", "help text" → description
• "localized", "culture specific", "per language" → isLocalized: true
• "sort order", "sort index", "order" → sortOrder
• "group", "tab" → group
• "searchable" → indexingType: 'searchable'
• "required", "mandatory" → isRequired: true

Example with metadata:

title: {
  type: 'string',
  displayName: 'Article Title',
  description: 'The main heading displayed at the top',
  isLocalized: true,
  group: 'content',
  sortOrder: 1,
  indexingType: 'searchable',
  isRequired: true,
  maxLength: 100
}

Recognizing Property Intent from User Requests

CRITICAL: When users describe properties, recognize the intended UI control and use the correct pattern:

User Says	Property Type	Required Fields
"dropdown", "select one", "choice", "pick one from..."	String with selectOne	type: 'string', format: 'selectOne', enum: [...]
"select list", "multi-select", "select many", "checkboxes", "pick multiple from..."	Array with selectMany	type: 'array', format: 'selectMany', items: { type: 'string', enum: [...] }
"URL to document", "document link", "URL to doc"	URL with DocumentUrl	type: 'url', format: 'DocumentUrl'
"URL to image", "image link", "image URL"	URL with ImageUrl	type: 'url', format: 'ImageUrl'
"short string", "single-line text", "title", "name"	String with shortString	type: 'string', format: 'shortString'
"long string", "multi-line text", "description"	String (no format)	type: 'string'
"GUID", "unique identifier", "UUID"	String with guid	type: 'string', format: 'guid'
"rich text", "formatted text", "WYSIWYG"	RichText	type: 'richText'
"image", "picture", "photo"	ContentReference	type: 'contentReference', allowedTypes: ['_image']
"list of tags", "array of strings"	Array	type: 'array', items: { type: 'string' }

Example: If user says "add a dropdown with Red, Green, Blue options", create:

colorChoice: {
  type: 'string',
  format: 'selectOne',
  enum: [
    { value: 'Red', displayName: 'Red' },
    { value: 'Green', displayName: 'Green' },
    { value: 'Blue', displayName: 'Blue' }
  ],
  displayName: 'Color Choice'
}

Important Patterns

Content References: Control what can be referenced using allowedTypes, restrictedTypes, or contentType:

// Using allowedTypes (whitelist)
featuredImage: {
  type: 'contentReference',
  allowedTypes: ['_image', '_video'],  // Base types as strings
  displayName: 'Featured Media'
}

relatedArticle: {
  type: 'contentReference',
  allowedTypes: [ArticleContentType],  // Custom types as object references (NOT strings)
  restrictedTypes: [DraftContentType], // Can combine with restrictedTypes
  displayName: 'Related Article'
}

// Using contentType (single specific type)
heroSection: {
  type: 'contentReference',
  contentType: HeroContentType,  // Object reference
  displayName: 'Hero Section'
}

CRITICAL - Object References vs Strings:

• Base types (start with underscore: _page, _component, _image, etc.) → use as strings: ['_image']
• Custom types (no underscore: ArticleContentType, AllowedContentType, etc.) → use as object references: [ArticleContentType]
• When using custom type objects, import them at the top of the file

How to determine:

// Starts with underscore → string
allowedTypes: ['_image']

// No underscore → object reference + import
allowedTypes: [ArticleContentType]
import { ArticleContentType } from './Article';

// Mixed
allowedTypes: ['_image', ArticleContentType]
import { ArticleContentType } from './Article';

CRITICAL - Mutual Exclusivity: ⚠️ Cannot use contentType together with allowedTypes/restrictedTypes - they are mutually exclusive. If user specifies both, use only contentType and warn the user.

When user says:

• "allowedType is X" → Check if X starts with underscore:
  • If X starts with _ (e.g., _image) → allowedTypes: ['_image'] (string)
  • If X does NOT start with _ (e.g., ArticleContentType) → allowedTypes: [ArticleContentType] (object) + import
• "restrictedType is X" → restrictedTypes: [XContentType] (object, never string) + import
• "reference type is X" → contentType: XContentType (object, singular, not array) + import

Examples of type name recognition:

User says: "allowedType is AllowedContentType"
→ AllowedContentType (no underscore) = custom type
→ allowedTypes: [AllowedContentType]  // Object reference
→ import { AllowedContentType } from './AllowedContentType';

User says: "allowedType is _image"
→ _image (starts with underscore) = base type
→ allowedTypes: ['_image']  // String

User says: "restrictedType is RestrictContentType"
→ RestrictContentType (no underscore) = custom type
→ restrictedTypes: [RestrictContentType]  // Object reference
→ import { RestrictContentType } from './RestrictContentType';

Arrays: Specify what type of items the array contains. CRITICAL: Constraints on individual items go inside the items object:

// Simple array
tags: {
  type: 'array',
  items: { type: 'string' },
  displayName: 'Tags',
  minItems: 1,    // Array-level: min number of items
  maxItems: 10,   // Array-level: max number of items
}

// Array with constraints on each item
validatedTags: {
  type: 'array',
  items: {
    type: 'string',
    minLength: 1,      // Item-level: each string min length
    maxLength: 20,     // Item-level: each string max length
    pattern: '^test'   // Item-level: each string must start with "test"
  },
  minItems: 1,
  maxItems: 10
}

// Array of numbers with range per item
prices: {
  type: 'array',
  items: {
    type: 'float',
    minimum: 0.01,   // Item-level: each price >= 0.01
    maximum: 999.99  // Item-level: each price <= 999.99
  }
}

// Array of content references with type restrictions per item
relatedArticles: {
  type: 'array',
  items: {
    type: 'content',
    allowedTypes: [ArticleContentType]  // Item-level: each must be Article
  }
}

When user says "each item must...", "per item", "every item should..." → add constraints inside items object.

Dropdown Properties (Select One):

CRITICAL: For dropdown/select-one properties, you MUST include both format: 'selectOne' AND an enum array.

color: {
  type: 'string',
  format: 'selectOne',
  enum: [
    { value: 'Red', displayName: 'Red' },
    { value: 'Green', displayName: 'Green' },
    { value: 'Blue', displayName: 'Blue' }
  ],
  displayName: 'Color'
}

Common mistake: Omitting format or enum will result in a plain text field instead of a dropdown.

Select List Properties (Select Many):

CRITICAL: For multi-select lists, you MUST use type: 'array', include format: 'selectMany', AND define items.enum.

sizes: {
  type: 'array',
  format: 'selectMany',
  displayName: 'Sizes',
  items: {
    type: 'string',
    enum: [
      { value: 'Small', displayName: 'Small' },
      { value: 'Medium', displayName: 'Medium' },
      { value: 'Large', displayName: 'Large' }
    ]
  }
}

Common mistake: Putting enum at the property level instead of inside items, or omitting format.

Components: Embed a specific component type (use the type object reference, NOT a string):

hero: {
  type: 'component',
  contentType: HeroComponentType, // Reference to the component type object
  displayName: 'Hero Section',
}

IMPORTANT: The contentType field must reference the actual type object (e.g., HeroComponentType), not a string like 'HeroComponentType'.

Container Types: Use mayContainTypes for pages, experiences, and folders:

export const BlogPageContentType = contentType({
  key: 'BlogPage',
  baseType: '_page',
  mayContainTypes: [ArticleContentType, '_self'], // Can contain Articles and other BlogPages
  properties: { /* ... */ },
});

Creating from Existing CMS Definitions

If the user wants to model based on existing content types, display templates, or contracts from CMS:

1. First, pull the definitions as JSON:

   npx @optimizely/cms-cli@latest config pull --json
   

2. Parse the JSON output to understand the structure
3. Convert it to the appropriate TypeScript format:
   • Content types → contentType() format
   • Display templates → displayTemplate() format
   • Contracts → contract() format

Creating Multiple Content Types (Batch Creation)

When creating multiple content types at once (e.g., generating from CMS site data or creating a set of related types):

1. Create all content type files in the components directory
2. IMPORTANT: After creating all files, check if initContentTypeRegistry exists in the project (search for it in layout.tsx or app/layout.tsx)
3. If the registry exists, add all new content types and contracts to it:

   import { ArticleContentType } from '@/components/Article';
   import { BlogPageContentType } from '@/components/BlogPage';
   import { HeroComponentType } from '@/components/Hero';
   import { SEOContract } from '@/components/SEOContract';
   import { initContentTypeRegistry } from '@optimizely/cms-sdk';
   
   initContentTypeRegistry([
     SEOContract, // Contracts first
     ArticleContentType,
     BlogPageContentType,
     HeroComponentType,
   ]);
   

4. If creating a script to generate content types, ensure the script also updates the registry
5. Remind the user to sync with config push after all types are created and registered

Component-Specific Configuration

For component types, you can specify composition behaviors:

export const HeroComponentType = contentType({
  key: 'Hero',
  baseType: '_component',
  compositionBehaviors: ['sectionEnabled', 'elementEnabled'],
  properties: { /* ... */ },
});

Creating Display Templates

Display templates provide visual variations for content types and sections. You can create them from scratch or pull existing ones from CMS using config pull --json.

File Structure

Create display templates in the same components directory:

import { displayTemplate } from '@optimizely/cms-sdk';

export const CardDisplayTemplate = displayTemplate({
  key: 'CardTemplate',
  displayName: 'Card Display',
  isDefault: false,
  contentType: 'Article', // Or use a content type object
  settings: {
    showImage: {
      displayName: 'Show Image',
      editor: 'checkbox',
      sortOrder: 1,
      choices: {
        true: { displayName: 'Yes', sortOrder: 1 },
        false: { displayName: 'No', sortOrder: 2 },
      },
    },
  },
  tag: 'ArticleCard', // Optional: React component name
});

Display Template Variants

A display template must specify one of:

• contentType: 'TypeKey' - For a specific content type
• baseType: '_page' | '_component' | ... - For all types with that base
• nodeType: 'row' | 'column' - For section nodes

Settings Configuration

Settings allow editors to customize the display:

• editor: 'select' | 'checkbox'
• choices - Object mapping choice keys to display names and sort order

Creating Contracts

Contracts are reusable property definitions that multiple content types can extend. They help avoid duplicating common properties across content types. You can create them from scratch or pull existing ones from CMS using config pull --json.

File Structure

Create a file for the contract (e.g., SEOContract.tsx) in the components directory:

import { contract } from '@optimizely/cms-sdk';

export const SEOContract = contract({
  key: 'seo',
  displayName: 'SEO Properties',
  properties: {
    metaTitle: {
      type: 'string',
      displayName: 'Meta Title',
      maxLength: 60,
    },
    metaDescription: {
      type: 'string',
      displayName: 'Meta Description',
      maxLength: 160,
    },
    ogImage: {
      type: 'contentReference',
      allowedTypes: ['_image'],
      displayName: 'Open Graph Image',
    },
  },
});

Using Contracts in Content Types

Content types can extend contracts to inherit their properties:

import { contentType } from '@optimizely/cms-sdk';
import { SEOContract } from './SEOContract';

export const ArticleContentType = contentType({
  key: 'Article',
  displayName: 'Article',
  baseType: '_page',
  extends: SEOContract, // Inherits metaTitle, metaDescription, ogImage
  properties: {
    heading: { type: 'string' },
    body: { type: 'richText' },
  },
});

Common Contract Use Cases

• SEO properties: Meta titles, descriptions, social media tags
• Authoring metadata: Created by, last modified, review date
• Publishing workflow: Draft status, approval flags, scheduled publish date
• Analytics: Tracking codes, campaign parameters
• Accessibility: Alt text requirements, ARIA labels

Multiple Contracts

Content types can extend multiple contracts (pass an array):

export const ArticleContentType = contentType({
  key: 'Article',
  baseType: '_page',
  extends: [SEOContract, AuthorContract, PublishingContract],
  properties: {
    // Article-specific properties
  },
});

Registering Content Types and Contracts

After creating content type or contract files, check if initContentTypeRegistry is used in the project:

1. Search for files importing initContentTypeRegistry (typically in layout.tsx or app/layout.tsx)
2. If found, add the new content types and contracts to the array:

import { ArticleContentType } from '@/components/Article';
import { BlogPageContentType } from '@/components/BlogPage'; // New type
import { SEOContract } from '@/components/SEOContract'; // New contract
import { initContentTypeRegistry } from '@optimizely/cms-sdk';

initContentTypeRegistry([
  SEOContract, // Add new contracts
  ArticleContentType,
  BlogPageContentType, // Add new types
]);

3. If not found, inform the user they may need to set up the registry in their application bootstrap code

Registering Display Templates

After creating display template files, check if initDisplayTemplateRegistry is used in the project:

1. Search for files importing initDisplayTemplateRegistry (typically in layout.tsx or app/layout.tsx)
2. If found, add the new display templates to the array:

import { CardDisplayTemplate } from '@/components/CardDisplayTemplate'; // New template
import { ListDisplayTemplate } from '@/components/ListDisplayTemplate'; // New template
import { initDisplayTemplateRegistry } from '@optimizely/cms-sdk';

initDisplayTemplateRegistry([
  CardDisplayTemplate,
  ListDisplayTemplate, // Add new templates
]);

3. If not found, inform the user they may need to set up the registry in their application bootstrap code

React Components for Display Templates

Display templates define the structure and settings in CMS, but they need corresponding React components for rendering.

After creating display template definitions, always suggest to the user:

Next Step: Create the React rendering component for this display template using the optimizely-model-react skill.

The React component should:

• Match the display template's tag field (if specified) or use the display template key
• Implement the visual variation defined by the template
• Use the template's settings to customize rendering

After Creating Files

After successfully creating content type, display template, or contract files, always do the following:

1. Remind About Syncing to CMS

Immediately remind the user that they need to sync to CMS. Provide the exact command they should run:

Next Step: Sync your changes to the CMS by running:

npx @optimizely/cms-cli@latest config push optimizely.config.mjs

2. Offer to Run the Command

Ask the user if they want you to run the sync command now:

Would you like me to run the sync command for you now?

If they say yes, run the command and report the results. If they say no or later, acknowledge and move on.

3. Suggest React Components (if applicable)

If the user created content types and the project uses React, suggest:

For React rendering components, use the optimizely-model-react skill to generate the component.

File Naming Conventions

Use PascalCase for file names matching the key:

• Content type key Article → file Article.tsx
• Content type key BlogPage → file BlogPage.tsx
• Display template key CardTemplate → file CardTemplate.tsx
• Contract key seo → file SEOContract.tsx

Export with appropriate suffixes:

• export const ArticleContentType = contentType({ ... })
• export const CardDisplayTemplate = displayTemplate({ ... })
• export const SEOContract = contract({ ... })

Common Pitfalls to Avoid

Avoid nested arrays, invalid base types, missing component type fields, forgetting to register types, and adding baseType to contracts. See references/common-pitfalls.md for detailed explanations and solutions.

Summary Workflow

1. Check optimizely.config.mjs for components directory
2. Create the content type, contract, or display template file in that directory
3. Use appropriate contentType(), contract(), or displayTemplate() structure
4. Add to registry if it exists:
   • initContentTypeRegistry (contracts before content types)
   • initDisplayTemplateRegistry (for display templates)
5. Always remind user to run config push and offer to run it for them
6. Suggest optimizely-model-react for React components if applicable

Additional Resources

Reference Files

For detailed information, consult:

• references/property-types.md - Comprehensive property type reference with all types, constraints, and usage examples
• references/base-types.md - Detailed base type explanations and usage patterns for pages, components, experiences, and media
• references/common-pitfalls.md - Common pitfalls and solutions when modeling content types, display templates, and contracts