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# MTRBaseClusterContentAppObserver

Cluster Content App Observer

```
class MTRBaseClusterContentAppObserver
```

## Overview

This cluster provides an interface for sending targeted commands to an Observer of a Content App on a Video Player device such as a Streaming Media Player, Smart TV or Smart Screen. The cluster server for Content App Observer is implemented by an endpoint that communicates with a Content App, such as a Casting Video Client. The cluster client for Content App Observer is implemented by a Content App endpoint. A Content App is informed of the NodeId of an Observer when a binding is set on the Content App. The Content App can then send the ContentAppMessage to the Observer (server cluster), and the Observer responds with a ContentAppMessageResponse.

## Relationships

### Conforms To

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`Equatable`](/documentation/Swift/Equatable)

[`CVarArg`](/documentation/Swift/CVarArg)

[`Hashable`](/documentation/Swift/Hashable)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

### Inherits From

[`MTRGenericBaseCluster`](/documentation/Matter/MTRGenericBaseCluster)

---

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