---
title: MarketplaceExtension
framework: MarketplaceKit
role: symbol
role_heading: Protocol
platforms: [iOS 17.4+, iPadOS 17.4+]
path: marketplacekit/marketplaceextension
---

# MarketplaceExtension

## Declaration

```swift
protocol MarketplaceExtension : AppExtension, Sendable
```

## Topics

### Instance Methods

- [additionalHeaders(for:account:)](marketplacekit/marketplaceextension/additionalheaders(for:account:).md)
- [automaticUpdates(for:)](marketplacekit/marketplaceextension/automaticupdates(for:).md)
- [availableAppVersions(forAppleItemIDs:)](marketplacekit/marketplaceextension/availableappversions(forappleitemids:).md)
- [requestFailed(with:)](marketplacekit/marketplaceextension/requestfailed(with:).md)

## Relationships

### Inherits From

- [AppExtension](extensionfoundation/appextension.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Deprecations

- [MarketplaceExtensionConfiguration](marketplacekit/marketplaceextensionconfiguration.md)