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# ASWebAuthenticationSessionWebBrowserSupportCapabilities

A collection of keys that a browser app uses to declare its ability to handle authentication requests from other apps.

## Discussion

Add a dictionary for this key to your app’s [`Information Property List`](/documentation/BundleResources/Information-Property-List) if your app is a web browser and it supports web authentication. In the dictionary, include the capability keys listed below to indicate your browser app’s capabilities. For more information, see <doc://com.apple.documentation/documentation/AuthenticationServices/supporting-single-sign-on-in-a-web-browser-app>.

## Topics

### Capabilities

[`IsSupported`](/documentation/BundleResources/Information-Property-List/ASWebAuthenticationSessionWebBrowserSupportCapabilities/IsSupported)

A Boolean that indicates whether the app acts as a browser that supports authentication sessions.

[`EphemeralBrowserSessionIsSupported`](/documentation/BundleResources/Information-Property-List/ASWebAuthenticationSessionWebBrowserSupportCapabilities/EphemeralBrowserSessionIsSupported)

A Boolean that indicates whether the app supports ephemeral browsing when conducting authentication sessions.

[`CallbackURLMatchingIsSupported`](/documentation/BundleResources/Information-Property-List/ASWebAuthenticationSessionWebBrowserSupportCapabilities/CallbackURLMatchingIsSupported)

A Boolean that indicates whether the app can handle callbacks to match authentication URLs.

[`AdditionalHeaderFieldsAreSupported`](/documentation/BundleResources/Information-Property-List/ASWebAuthenticationSessionWebBrowserSupportCapabilities/AdditionalHeaderFieldsAreSupported)

A Boolean that indicates whether the app supports additional header fields in requests.


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