Android Agent Skills

Android Agent Skills

A production-ready Agent Skill framework for Android Kotlin development with Clean Architecture, Jetpack Compose, and AI-powered code generation.

When to use this skill

Use this skill when:

• Building Android apps with Kotlin
• Implementing Clean Architecture (ViewModel → UseCase → Repository)
• Creating Jetpack Compose UIs with proper stability
• Generating ViewModels, Repositories, UseCases, or Compose Screens
• Writing Agent Skills (pure Kotlin modules)
• Implementing validation, error handling, or state management
• Reviewing code for architecture compliance

Quick Start

1. Read context first: skills/​AI_CONTEXT.md
2. Use generation commands: @gen-viewmodel, @gen-skill, @gen-screen
3. Follow templates: skills/​templates/
4. Check quality: @analyze-skill, @review

Available Commands

Code Generation

Analysis & Review

Quick Access

Critical Rules (Never Break)

// 1. ALWAYS rethrow CancellationException
catch (e: CancellationException) { throw e }

// 2. State: private mutable, public immutable
private val _state = MutableStateFlow(UiState())
val state: StateFlow<UiState> = _state.asStateFlow()

// 3. Events use Channel, NOT SharedFlow
private val _events = Channel<Event>()

// 4. Mark all state classes @Immutable
@Immutable data class UiState(...)

// 5. Architecture: ViewModel → UseCase → Repository
// NEVER: ViewModel → Repository directly

Key References

Templates

Architecture Overview

┌─────────────────────────────────────────────────────┐
│                    UI Layer                         │
│  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐  │
│  │   Screen    │  │   Route     │  │  ViewModel  │  │
│  │ (Stateless) │◄─│ (Stateful)  │◄─│   (MVI)     │  │
│  └─────────────┘  └─────────────┘  └──────┬──────┘  │
└───────────────────────────────────────────┼─────────┘
                                            │
┌───────────────────────────────────────────┼─────────┐
│                 Domain Layer              │         │
│  ┌─────────────┐  ┌─────────────┐  ┌──────▼──────┐  │
│  │   Skill     │  │  UseCase    │◄─│  Interface  │  │
│  │ (Pure Kotlin)│  │ invoke()   │  │ Repository  │  │
│  └─────────────┘  └─────────────┘  └──────┬──────┘  │
└───────────────────────────────────────────┼─────────┘
                                            │
┌───────────────────────────────────────────┼─────────┐
│                  Data Layer               │         │
│  ┌─────────────┐  ┌─────────────┐  ┌──────▼──────┐  │
│  │   Remote    │  │   Local     │  │  Repository │  │
│  │ DataSource  │  │ DataSource  │◄─│    Impl     │  │
│  └─────────────┘  └─────────────┘  └─────────────┘  │
└─────────────────────────────────────────────────────┘

Guides (35 available)

All guides in skills/​guides/:

Validation Quick Reference

// Top 5 validation functions
requireNotBlank(input.name, "name")
requireValidEmail(input.email, "email")
requireInRange(input.age, 13..150, "age")
requireNotEmpty(input.items, "items")
require(a < b) { "a must be < b" }

File Structure

android-agent-skills/
├── SKILL.md                    # This file - entry point
├── skills/
│   ├── AI_CONTEXT.md           # Quick reference (read first)
│   ├── AGENT_SUMMARY.md        # Core rules & patterns
│   ├── AI_PROMPTS.md           # All @gen-* prompts
│   ├── guides/                 # 35 detailed guides
│   └── templates/              # Code templates & examples
├── *_CHEAT_SHEET.md            # Quick reference sheets
└── README.md                   # GitHub documentation