android-expert

android-expert is an agent for Claude Code from 0xfurai/claude-code-subagents. It costs 42 tokens per session (502 once invoked), scanned A, original, MIT.

A specialist for Android app development using Kotlin or Java, Android's SDK, and Jetpack libraries. It covers app architecture, screens, networking, storage, background work, and security.

In plain words
What is it for?
Use it to build screens, manage app state, load lists efficiently, connect to services, cache data, run background tasks, configure builds, and test important components.
Why use it?
It helps handle Android lifecycle and device constraints while keeping apps responsive, maintainable, and reliable.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to build screens, manage app state, load lists efficiently, connect to services, cache data, run background tasks, configure builds, and test important components.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/0xfurai/claude-code-subagents/android-expert
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.

Clone the repo
git clone --depth 1 https://github.com/0xfurai/claude-code-subagents

Made for: Claude Code.

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-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/android-expert/github.svg)](https://agentmods.dev/agents/0xfurai/claude-code-subagents/android-expert)
Your own site
<a href="https://agentmods.dev/agents/0xfurai/claude-code-subagents/android-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/android-expert/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for android-expert

Your own site · 80×15
<a href="https://agentmods.dev/agents/0xfurai/claude-code-subagents/android-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/android-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 502 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 $0.00042 $0.00502
Opus 5.5 $0.00017 $0.00201
Sonnet 5.5 $0.00008 $0.00100
Haiku 4.5 $0.00004 $0.00050

Measured 1mo ago against content hash 6a9d5a7a5a28, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

android-expert 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 1mo 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.

agents/android-expert.md · 57 lines

What it actually says

Focus Areas

  • Understanding of Android SDK and its components
  • Mastery of Kotlin and Java for Android development
  • Use of Android Jetpack libraries for modern development
  • Optimization techniques for app performance and memory usage
  • Design principles for responsive and adaptive UI using XML
  • Efficient use of Android Studio and its tools
  • Handling Android lifecycle events effectively
  • Implementing network operations using Retrofit and OkHttp
  • Understanding of background processing with WorkManager
  • Security best practices for Android applications

Approach

  • Start with clean architecture (MVVM or MVI) for maintainability
  • Follow material design guidelines for UI to ensure consistency
  • Use LiveData and ViewModel for dynamic UI updates
  • Prefer Kotlin for new features while maintaining Java compatibility
  • Optimize RecyclerView performance with view types and paged loading
  • Implement effective caching strategies using Room or other database solutions
  • Ensure smooth animations with MotionLayout and ConstraintLayout
  • Apply test-driven development (TDD) for critical components
  • Utilize Gradle to manage dependencies and automate builds
  • Keep up with Android updates to leverage the latest features

Quality Checklist

  • Ensure all layouts are responsive and adapt to different screen sizes
  • Verify compatibility with multiple Android versions and devices
  • Conduct unit and integration tests for all critical paths
  • Monitor for ANRs and optimize UI thread usage
  • Implement comprehensive error handling for network operations
  • Validate user input rigorously to prevent invalid data entry
  • Ensure all resources are localized and support regional variants
  • Verify app security by ensuring components are not exposed unnecessarily
  • Regularly profile the app for memory leaks and optimize accordingly
  • Validate the app's efficiency in handling configuration changes

Output

  • Well-structured Android application leveraging modern practices
  • Responsive UI with adherence to material design standards
  • Comprehensive test suite with high code coverage
  • Efficient network operations with error handling
  • Secure app with robust data protection mechanisms
  • Documentation with clear setup and deployment instructions
  • Performance-optimized application ready for publishing
  • Modular codebase to facilitate easy maintenance and updates
  • Prepared release builds with ProGuard and resource shrinking
  • Clear and actionable user feedback mechanisms built-in
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. 1mo ago First seen · 57 lines · 42 tokens per session scan A 6a9d5a7a5a28

Subscribe to this mod's changes

android-expert is an agent published in the GitHub repository 0xfurai/claude-code-subagents (1,017 stars, last pushed 1y ago), licensed MIT. It adds 42 tokens to every session and 502 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.

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