appfunctions

Declaring dependencies

To add a dependency on appfunctions, you must add the Google Maven repository to your project. Read Google's Maven repository for more information.

Add the dependencies for the artifacts you need in the build.gradle file for your app or module:

dependencies {
    implementation "androidx.appfunctions:appfunctions:1.0.0-alpha03"
    implementation "androidx.appfunctions:appfunctions-service:1.0.0-alpha03"
    implementation "androidx.appfunctions:appfunctions-compiler:1.0.0-alpha03"
}

dependencies {
    implementation("androidx.appfunctions:appfunctions:1.0.0-alpha03")
    implementation("androidx.appfunctions:appfunctions-service:1.0.0-alpha03")
    implementation("androidx.appfunctions:appfunctions-compiler:1.0.0-alpha03")
}

For more information about dependencies, see Add build dependencies.

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Version 1.0

Version 1.0.0-alpha03

August 13, 2025

androidx.appfunctions:appfunctions-*:1.0.0-alpha03 is released. Version 1.0.0-alpha03 contains these commits.

New Features

• Use KDoc(s) as AppFunction descriptions
• Restrict values for Int and String types using AppFunctionIntValueConstraint and AppFunctionStringValueConstraint annotations, respectively.
• Specify a natural language description for large language models and a user visible description displayed within agent apps.
• Automatically grant permissions to URI(s) returned from an app function using AppFunctionUriGrant class.
• Write Robolectric tests using AppFunctionTestRule for testing your app function setup.

API Changes

• Add AppFunctionStringValueConstraint (I10e3f)
• Add AppFunctionIntValueConstraint (Ifda13)
• Refactor AppFunctionPrimitiveTypeMetadata to specific data type classes. (I1a3b2)
• Add description field in AppFunctionResponseMetadata (I2332b)
• Remove permission requirement from setAppFunctionEnabled API (I1b92a)
• Add description field in AppFunctionParameterMetadata (I40a67)
• Add AppFunctionUriGrant (I67ca9)
• Add resolveAppFunctionAppMetadata API. (I17408)
• Add isDescribedByKdoc in @AppFunctionSerializable annotation (Ie14e7)
• Add description field in AppFunctionDataTypeMetadata (I1bcac)
• Return AppPackageMetadata from observeAppFunctions API. (I68c7e)
• Add description field in AppFunctionMetadata (I060e2)
• Add AppFunctionTestRule (Id5ed0)
• Add isDescribedByKdoc in @AppFunction annotation (Ia84d2)

Bug Fixes

• AppFunctionManagerCompat only supports U+ devices (Ifa8d0)
• Add property descriptions of shared serializable types in AppFunction's metadata xml (I2aab2)
• Add a description element in generated AppFunction's metadata xml (Ie5bf6)

Version 1.0.0-alpha02

June 4, 2025

androidx.appfunctions:appfunctions:1.0.0-alpha02, androidx.appfunctions:appfunctions-compiler:1.0.0-alpha02, and androidx.appfunctions:appfunctions-service:1.0.0-alpha02 are released. Version 1.0.0-alpha02 contains these commits.

New Features

• Support Android 16 API(s).
• Better support for parameterized AppFunctionSerializable(s) at compile time.

API Changes

• Introduced AppFunctionSchemaDefinition API, enabling agents to define their own predefined function schemas.

Bug Fixes

• Error handling for missing runtime enabled state of AppFunctions.
• Minor bugfix in observeAppFunctions API to observe changes in AppFunctionComponentMetadata.
• Additional error logs.

Version 1.0.0-alpha01

May 7, 2025

androidx.appfunctions:appfunctions:1.0.0-alpha01, androidx.appfunctions:appfunctions-compiler:1.0.0-alpha01, and androidx.appfunctions:appfunctions-service:1.0.0-alpha01 are released. Version 1.0.0-alpha01 contains these commits.

New Features

The AppFunctions Jetpack library is built on top of android.app.appfunctions platform APIs. This library simplifies exposing your app's functionality to the Assistant and allows the Assistant to interact with the app's exposed functions.

• androidx.appfunctions:appfunctions: Core client APIs for managing (enable/disable) and interacting with (search/execute) AppFunctions.
• androidx.appfunctions:appfunctions-service: Service-side APIs to easily expose your app's functionalities as AppFunctions.
• androidx.appfunctions:appfunctions-compiler: Required KSP compiler to generate necessary code for exposing AppFunctions.