android-development

android-development is a skill for Claude Code from MonumentalSystems/Atlas-Agent-Teams. It costs 14 tokens per session (609 once invoked), scanned A, original, MIT.

A guide to building Android apps with Kotlin, Jetpack Compose, and Android's supporting libraries. It also covers common app structures, data storage, background work, navigation, and Material Design.

In plain words
What is it for?
Use it when designing Android architecture, building user interfaces, adding local storage or background tasks, and implementing features such as camera access or biometric login.
Why use it?
It helps developers make Android code more consistent, maintainable, testable, and compatible across devices.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the mobile-dev plugin — 4 skills, 1 command, 5 agents shipped together

Good fit Use it when designing Android architecture, building user interfaces, adding local storage or background tasks, and implementing features such as camera access or biometric login.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/monumentalsystems/atlas-agent-teams/android-development
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add MonumentalSystems/Atlas-Agent-Teams --skill android-development
Clone the repo
git clone --depth 1 https://github.com/MonumentalSystems/Atlas-Agent-Teams

Made for: Claude Code.

Or install mobile-dev, the plugin that ships this one along with the rest of its 4 skills, 1 command, 5 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for android-development

README.md
[![agentmods](https://agentmods.dev/badge/skills/monumentalsystems/atlas-agent-teams/android-development.svg)](https://agentmods.dev/skills/monumentalsystems/atlas-agent-teams/android-development)
Your own site
<a href="https://agentmods.dev/skills/monumentalsystems/atlas-agent-teams/android-development"><img src="https://agentmods.dev/badge/skills/monumentalsystems/atlas-agent-teams/android-development.svg" alt="Measured on agentmods" height="20"></a>
Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 609 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00014 $0.00609
Opus 5 $0.00007 $0.00304
Sonnet 5 $0.00003 $0.00122
Haiku 4.5 $0.00001 $0.00061

Measured 4d ago against content hash a1005748524c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

android-development scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

teams/mobile-dev/skills/android-development/SKILL.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Android Development Guidelines

Kotlin and Jetpack Compose Fundamentals

  • Use Kotlin 1.9+ with modern language features
  • Prefer Jetpack Compose for new UI components
  • Use Compose state management (@State, @Remember, @ViewModel)
  • Leverage Kotlin Coroutines for asynchronous operations
  • Use Kotlin Flow for reactive streams
  • Follow Kotlin coding conventions

Android Architecture Patterns

  • MVVM: Use with ViewModel and LiveData/StateFlow
  • Clean Architecture: Separate data, domain, and presentation layers
  • Repository Pattern: Abstract data sources
  • Implement dependency injection with Hilt
  • Separate business logic from UI code
  • Use interfaces for abstraction and testing

Android Jetpack Libraries

  • Room: Use for local database persistence
  • WorkManager: Use for background tasks
  • Navigation Component: Use for app navigation
  • DataStore: Use for key-value storage
  • Paging 3: Use for paginated data
  • CameraX: Use for camera functionality
  • BiometricPrompt: Use for biometric authentication
  • AppCompat: Use for backward compatibility

Material Design 3 Guidelines

  • Follow Material Design 3 principles
  • Use Material 3 components and theming
  • Implement proper elevation and shadows
  • Use Material Icons for consistency
  • Support different screen sizes and densities
  • Implement responsive layouts
  • Support Dark Theme properly
  • Use motion and animations appropriately

Android Permissions and Security

  • Request runtime permissions properly
  • Use permission best practices
  • Implement proper certificate pinning
  • Use Android Keystore for secure storage
  • Follow security best practices
  • Implement proper network security configuration
  • Use ProGuard/R8 for code obfuscation

Google Play Store Submission

  • Follow Google Play Developer Policies
  • Prepare app bundle (AAB) for upload
  • Prepare screenshots and store listing
  • Test with Internal and Closed Testing tracks
  • Handle app updates and versioning properly
  • Comply with privacy and data collection policies
  • Use Play Console for distribution and analytics

Read the full file on GitHub · 80 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 80 lines · 14 tokens per session scan A a1005748524c

Subscribe to this mod's changes

android-development is a skill published in the GitHub repository MonumentalSystems/Atlas-Agent-Teams (21 stars, last pushed 27d ago), licensed MIT. It adds 14 tokens to every session and 609 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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