> For clean Markdown of any page, append .md to the page URL.
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> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://contentful.com/_mcp/server.

`AppDetails` is an entity for storing additional information about an app.

This information is used to provide presentational and non-functional information about the app, such as specifying a custom icon.

The entity has a 1-to-1 relationship with the `AppDefinition`, but is optional and must be created manually.

**Limitations:**

* Custom icons cannot be larger than 128px x 128px and can only be in png or jpg format.
* Using the endpoints, icons can only be uploaded as base64 strings.

## App details

[Create or update app details](/references/content-management-api/app-details/create-or-update-app-details)

[Get app details](/references/content-management-api/app-details/get-app-details)

[Delete app details](/references/content-management-api/app-details/delete-app-details)


## API Docs

- App Details [Get app details](https://contentful.com/developers/docs/references/content-management-api/app-details/get-app-details.md)
- App Details [Create or update app details](https://contentful.com/developers/docs/references/content-management-api/app-details/create-or-update-app-details.md)
- App Details [Delete app details](https://contentful.com/developers/docs/references/content-management-api/app-details/delete-app-details.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://contentful.com/developers/docs/openapi.json)
- [OpenAPI YAML](https://contentful.com/developers/docs/openapi.yaml)