---
title: FSClient
framework: FSKit
role: symbol
role_heading: Class
platforms: [macOS 15.4+]
path: fskit/fsclient
---

# FSClient

An interface for apps and daemons to interact with FSKit.

## Declaration

```swift
class FSClient
```

## Overview

Overview FSClient is the primary management interface for FSKit. Use this class to discover FSKit extensions installed on the system, including your own. important: Don’t subclass FSClient.

## Topics

### Obtaining the shared instance

- [shared](fskit/fsclient/shared.md)

### Discovering installed extensions

- [fetchInstalledExtensions(completionHandler:)](fskit/fsclient/fetchinstalledextensions(completionhandler:).md)
- [FSModuleIdentity](fskit/fsmoduleidentity.md)

### Performing single-volume mounting

- [mountSingleVolume(resource:bundleID:options:completionHandler:)](fskit/fsclient/mountsinglevolume(resource:bundleid:options:completionhandler:).md)
- [FSResource](fskit/fsresource.md)

### Accessing file system extension settings

- [openFileSystemExtensionsSettings()](fskit/fsclient/openfilesystemextensionssettings().md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)