# Webiny API Cms Content Models

Creating Headless CMS content models via code using the ModelFactory pattern.

- Repository: https://github.com/webiny/webiny-js (8051 stars)
- Category: Design
- License: see repository
- Last updated: 2026-10-30
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add webiny/webiny-js --skill webiny-api-cms-content-models -g -a claude-code -y`
Codex: `npx skills add webiny/webiny-js --skill webiny-api-cms-content-models -g -a codex -y`
Cursor: `npx skills add webiny/webiny-js --skill webiny-api-cms-content-models -g -a cursor -y`
Gemini CLI: `npx skills add webiny/webiny-js --skill webiny-api-cms-content-models -g -a gemini-cli -y`

## Description

Creating Headless CMS content models via code using the ModelFactory pattern. Use this skill when the developer wants to create, modify, or understand content model definitions, define fields and validators, set up reference fields between models, configure field layouts (including nested layouts inside object or dynamicZone fields), pick the correct Admin UI renderer for a field type (textInput/textInputs, lexicalEditor/lexicalEditors, file/files, objectAccordionSingle/objectAccordionMultiple, etc.), or work with the ModelFactory builder API. Also covers field types (text, longText, number, boolean, datetime, asset, file, ref, object, richText, dynamicZone), list (array) fields via .list() and the singular-vs-plural renderer rule, the mandatory datetime subtype (dateOnly/timeOnly/withTimezone/withoutTimezone), validation (required, unique, email, pattern, minLength, maxLength, gte, predefinedValues), single-entry (singleton) models via .singleEntry(), model/field tags via .tags(), and field rules via .rules() for access-control and conditional visibility/editability. Includes the correct `fields` projection syntax when querying entries via the SDK: `ref` fields use double-`values.` nesting (e.g. `values.author.values.name`) because they resolve to another entry, while `object` and `dynamicZone` sub-fields are inline and use a single `values.` (e.g. `values.author.name`), getting this wrong silently returns null.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Creating Content Models via Code

## TL;DR

Content models are created using the `ModelFactory` pattern. You define a class implementing `ModelFactory.Interface`, use the fluent `ModelFactory.Builder` API to declare fields, validators, layout, and API names, then export with `ModelFactory.createImplementation()`. Register in `webiny.config.tsx` as `<Api.Extension>`.

## The ModelFactory Pattern

Every code-based content model follows the same structure:

```typescript
import { ModelFactory } from "webiny/api/cms/model";

class MyModelImpl implements ModelFactory.Interface {
  async execute(builder: ModelFactory.Builder) {
    return [
      builder
        .public({ modelId: "myModel", name: "My Model", group: "ungrouped" })
        .description("Description of the model")
        .fields(fields => ({
          // field definitions here
        }))
        .layout([/* row definitions */])
        .titleFieldId("fieldId")
        .singularApiName("MyModel")
        .pluralApiName("MyModels")
    ];
  }
}

export default ModelFactory.createImplementation({
  implementation: MyModelImpl,
  dependencies: []
});
```

Register in `webiny.config.tsx`:

```tsx
<Api.Extension src={"/extensions/MyModel.ts"} />
```

**YOU MUST include the full file path with the `.ts` extension in the `src` prop.** For example, use `src={"/extensions/MyModel.ts"}`, NOT `src={"/extensions/MyModel"}`. Omitting the file extension will cause a build failure.

**YOU MUST use `export default` for the `createImplementation()` call** when the file is targeted directly by an Extension `src` prop. Using a named export (`export const MyModel = ...`) will cause a build failure. Named exports are only valid inside files registered via `createFeature`.

## Model Configuration Methods

The rest: https://github.com/webiny/webiny-js/blob/HEAD/skills/user-skills/content-models/SKILL.md