Appfunctions
Analyzes Android apps to find user workflows to expose as AppFunctions, such as...
Install
npx skills add android/skills --skill appfunctions -g -a claude-code -y- Repository
- android/skills10.2k
- Category
- Design
- Updated
- 6d ago
- License
- Complete terms in LICENSE.txt
- Context cost
- Lightabout 1,165 tokens
- Runs scripts
- No, instructions only
What it does
Analyzes Android apps to find user workflows to expose as AppFunctions, such as creating a note, playing media, or sending a message. AI agents, voice commands, and system shortcuts then run them without opening the app UI. Generates Kotlin code with the androidx.appfunctions library, and refines KDoc and the app description so that agents choose and call functions correctly. Use this skill when discovering, implementing, documenting, testing, or upgrading AppFunctions in an Android app, including @AppFunctionDeclaration, @AppFunctionSerializable, @AppFunctionServiceEntryPoint, AppFunctionService, app_metadata.xml, appfn:instructions, adb shell cmd app_function, and legacy @AppFunction or AppFunctionConfiguration.Provider code. Don't use for building agents that call AppFunctions or for remote MCP servers.
Analyzes Android apps to identify key user workflows to expose as AppFunctions, such as creating a note, playing media, or sending a message, for AI agents, voice commands, and system shortcuts to run without opening the app UI.
Generates Kotlin code to expose these workflows to the Android system, allowing agents to discover and execute them on-device.
Also refines KDoc documentation and the app description so AI agents correctly understand and use the provided functionality.
Prerequisites
The app must targetSdk 36 or newer and use compileSdk 37 or newer as
AppFunctions, part of the Android platform API, are available from Android 16
onwards.
Always use the Jetpack library because it handles backward compatibility.
Use androidx.appfunctions:appfunctions and the KSP compiler
androidx.appfunctions:appfunctions-compiler, version 1.0.0-beta01 or later.
Workflows
This skill enables the caller to discover features that will be provided to system agents, implement these with AppFunctions, improve function description for agents, and use ADB commands for local evaluation and testing.
The full AppFunction development flow consists of these four steps:
