IMPORTANT: In July 2025, we stopped releasing new versions of KTX modules, and we removed the KTX libraries from the Firebase Android BoM (v34.0.0). If you use KTX APIs from the previously released KTX modules, we recommend that you migrate your app to use KTX APIs from the main modules instead. For details, see the FAQ about this initiative.

com.google.firebase.functions

Classes

`FirebaseFunctions`	FirebaseFunctions lets you call Cloud Functions for Firebase.
`HttpsCallableOptions`	Options for configuring the callable function.
`HttpsCallableOptions.Builder`	A builder for creating `com.google.firebase.functions.HttpsCallableOptions`.
`HttpsCallableReference`	A reference to a particular Callable HTTPS trigger in Cloud Functions.
`HttpsCallableResult`	The result of calling a `HttpsCallableReference` function.
`StreamResponse`	Represents a response from a Server-Sent Event (SSE) stream.
`StreamResponse.Message`	An event message received during the stream.
`StreamResponse.Result`	The final result of the computation, marking the end of the stream.

Exceptions

FirebaseFunctionsException

The class for all Exceptions thrown by FirebaseFunctions.

Enums

FirebaseFunctionsException.Code

The set of error status codes that can be returned from a Callable HTTPS tigger.

Extension functions summary

`FirebaseFunctions`	`Firebase.functions(app: FirebaseApp, regionOrCustomDomain: String)` Returns the `FirebaseFunctions` instance of a given `FirebaseApp` and `regionOrCustomDomain`.
`FirebaseFunctions`	`Firebase.functions(app: FirebaseApp)` Returns the `FirebaseFunctions` instance of a given `FirebaseApp`.
`FirebaseFunctions`	`Firebase.functions(regionOrCustomDomain: String)` Returns the `FirebaseFunctions` instance of a given `regionOrCustomDomain`.
`HttpsCallableReference`	`FirebaseFunctions.getHttpsCallable(name: String, init: HttpsCallableOptions.Builder.() -> Unit)` Returns a reference to the Callable HTTPS trigger with the given name and call options.
`HttpsCallableReference`	`FirebaseFunctions.getHttpsCallableFromUrl(url: URL, init: HttpsCallableOptions.Builder.() -> Unit)` Returns a reference to the Callable HTTPS trigger with the given URL and call options.

Extension properties summary

FirebaseFunctions

Firebase.functions

Returns the FirebaseFunctions instance of the default FirebaseApp.

Extension functions

functions

fun Firebase.functions(app: FirebaseApp, regionOrCustomDomain: String): FirebaseFunctions

Returns the FirebaseFunctions instance of a given FirebaseApp and regionOrCustomDomain.

functions

fun Firebase.functions(app: FirebaseApp): FirebaseFunctions

Returns the FirebaseFunctions instance of a given FirebaseApp.

functions

fun Firebase.functions(regionOrCustomDomain: String): FirebaseFunctions

Returns the FirebaseFunctions instance of a given regionOrCustomDomain.

getHttpsCallable

fun FirebaseFunctions.getHttpsCallable(name: String, init: HttpsCallableOptions.Builder.() -> Unit): HttpsCallableReference

Returns a reference to the Callable HTTPS trigger with the given name and call options.

getHttpsCallableFromUrl

fun FirebaseFunctions.getHttpsCallableFromUrl(url: URL, init: HttpsCallableOptions.Builder.() -> Unit): HttpsCallableReference

Returns a reference to the Callable HTTPS trigger with the given URL and call options.

Extension properties

functions

val Firebase.functions: FirebaseFunctions

Returns the FirebaseFunctions instance of the default FirebaseApp.