appfunctions

  
TODO
Latest Update Stable Release Release Candidate Beta Release Alpha Release
October 8, 2025 - - - 1.0.0-alpha05

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:

Groovy

dependencies {
    implementation "androidx.appfunctions:appfunctions:1.0.0-alpha05"
    implementation "androidx.appfunctions:appfunctions-service:1.0.0-alpha05"
    // Use Kotlin Symbol Processing (KSP) for the appfunctions compiler plugin.
    // See KSP Quickstart to add KSP to your build
    ksp "androidx.appfunctions:appfunctions-compiler:1.0.0-alpha05"
}

Kotlin

dependencies {
    implementation("androidx.appfunctions:appfunctions:1.0.0-alpha05")
    implementation("androidx.appfunctions:appfunctions-service:1.0.0-alpha05")
    // Use Kotlin Symbol Processing (KSP) for the appfunctions compiler plugin.
    // See KSP Quickstart to add KSP to your build
    ksp("androidx.appfunctions:appfunctions-compiler:1.0.0-alpha05")
}

For more information about dependencies, see Add build dependencies.

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Version 1.0

Version 1.0.0-alpha05

October 08, 2025

androidx.appfunctions:appfunctions-*:1.0.0-alpha05 is released. Version 1.0.0-alpha05 contains these commits.

New Features

  • Enforce required fields are provided when constructing AppFunctionData
  • Validating AppFunctionData against constraint values

API Changes

Bug Fixes

  • Add required field AppFunctionsData check. (I36b16, b/394553462)
  • Fix the issue that parameter optional state was not respected when overriding an interface.
  • Generate an empty XML file even when no AppFunctions are present since AppSearch expects the corresponding file specified in the App manifest.

Version 1.0.0-alpha04

September 10, 2025

androidx.appfunctions:appfunctions-*:1.0.0-alpha04 is released. Version 1.0.0-alpha04 contains these commits.

Bug Fixes

  • Fix R8 issues for release builds.

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.