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A design library version contains read-only copies of its items. You can read them once version creation finishes successfully.

For details on taxonomy and associated items, see [How items are included](/developers/docs/references/experience-management-api/design-libraries#how-items-are-included).

> **Info**
>
> To edit an item, update it in the source environment and create a new version.

## Content types

* [List content types](/developers/docs/references/experience-management-api/design-libraries/versions/items/list-design-library-version-content-types): Returns content type metadata.
* [Get content type](/developers/docs/references/experience-management-api/design-libraries/versions/items/get-design-library-version-content-type-payload): Returns the stored content type payload.

## Editor interfaces

Editor interfaces are addressed by their related `contentTypeId`.

* [List editor interfaces](/developers/docs/references/experience-management-api/design-libraries/versions/items/list-design-library-version-editor-interfaces): Returns editor interface metadata.
* [Get editor interface](/developers/docs/references/experience-management-api/design-libraries/versions/items/get-design-library-version-editor-interface-payload): Returns the stored editor interface payload.

## Data assemblies

* [List data assemblies](/developers/docs/references/experience-management-api/design-libraries/versions/items/list-design-library-version-data-assemblies): Returns data assembly metadata.
* [Get data assembly](/developers/docs/references/experience-management-api/design-libraries/versions/items/get-design-library-version-data-assembly-payload): Returns the stored data assembly payload.

## Design tokens

* [List design tokens](/developers/docs/references/experience-management-api/design-libraries/versions/items/list-design-library-version-design-tokens): Returns design token metadata.
* [Get design token](/developers/docs/references/experience-management-api/design-libraries/versions/items/get-design-library-version-design-token-payload): Returns the stored design token payload.

## Components

* [List components](/developers/docs/references/experience-management-api/design-libraries/versions/items/list-design-library-version-components): Returns component metadata.
* [Get component](/developers/docs/references/experience-management-api/design-libraries/versions/items/get-design-library-version-component-payload): Returns the stored component payload.

## Experience templates

* [List experience templates](/developers/docs/references/experience-management-api/design-libraries/versions/items/list-design-library-version-experience-templates): Returns experience template metadata.
* [Get experience template](/developers/docs/references/experience-management-api/design-libraries/versions/items/get-design-library-version-experience-template-payload): Returns the stored experience template payload.