---
title: book
framework: appintents
role: symbol
role_heading: Instance Property
path: appintents/appschema/booksentity/book
---

# book

An entity schema for a book.

## Declaration

```swift
var book: some AppSchemaEntity { get }
```

## Discussion

Discussion To make your app’s content available to Apple Intelligence, conform your AppEntity to a schema that describes your content to the system. If your app’s functionality aligns with the books domain and its content matches the book schema, you can generate the properties and protocol conformance the schema requires for your app entity implementation with the @AppEntity( .books.book) Swift macro. To make your app work with Siri, see Apple Intelligence and Siri AI. The following example shows an app entity that conforms to the book schema: @AppEntity(schema: .books.book) struct BookEntity {     // MARK: Static

static let defaultQuery = BookEntityQuery()

// MARK: Properties

let id: <#Identifiable.ID#>

var title: String?     var seriesTitle: String?     var author: String?     var genre: String?     var purchaseDate: Date?     var url: URL?

var displayRepresentation: DisplayRepresentation {         <#DisplayRepresentation#>     }

// MARK: Query

struct BookEntityQuery: EntityQuery {         func entities(for identifiers: [BookEntity.ID]) async throws -> [BookEntity] {             <#code#>         }     } } The schema supports the following system experiences: Shortcuts For more information about the App Intents framework and the experiences it supports, see Getting started with the App Intents framework.

## See Also

### Content and parameter types

- [audiobook](appintents/appschema/booksentity/audiobook.md)
- [settings](appintents/appschema/booksentity/settings.md)
- [AppSchema.BooksEntity](appintents/appschema/booksentity.md)