---
title: "NSPerformService(_:_:)"
framework: appkit
role: symbol
role_heading: Function
path: "appkit/nsperformservice(_:_:)"
---

# NSPerformService(_:_:)

Programmatically invokes a Services menu service.

## Declaration

```swift
func NSPerformService(_ itemName: String, _ pboard: NSPasteboard?) -> Bool
```

## Parameters

- `itemName`: Specifies a Services menu item, in any language. If the requested service is from a submenu of the Services menu, the value must contain a slash (for example, “Mail/Selection”).
- `pboard`: The pasteboard containing the data required by the service. This data must be present for the service to succeed. On output, this pasteboard contains the data returned by the service provider.

## Return Value

Return Value true if the service was successfully performed or false if it was not.

## Discussion

Discussion Use this function to programmatically invoke a service found in the application’s Services menu.