mobile-android-developer

mobile-android-developer is an agent for Claude Code from MonumentalSystems/Atlas-Agent-Teams. It costs 22 tokens per session (396 once invoked), scanned A, original, MIT.

An Android development agent for building apps with Kotlin, Jetpack Compose, and Android libraries.

In plain words
What is it for?
Use it to build screens, structure app features, add dependency injection, manage asynchronous work, support dark themes, and handle different screen sizes.
Why use it?
It helps organize Android code and handle device differences, accessibility-related design needs, performance, security, and testing.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

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

Good fit Use it to build screens, structure app features, add dependency injection, manage asynchronous work, support dark themes, and handle different screen sizes.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/monumentalsystems/atlas-agent-teams/android-developer
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/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 mobile-android-developer

README.md
[![agentmods](https://agentmods.dev/badge/agents/monumentalsystems/atlas-agent-teams/android-developer.svg)](https://agentmods.dev/agents/monumentalsystems/atlas-agent-teams/android-developer)
Your own site
<a href="https://agentmods.dev/agents/monumentalsystems/atlas-agent-teams/android-developer"><img src="https://agentmods.dev/badge/agents/monumentalsystems/atlas-agent-teams/android-developer.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 396 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 $0.00022 $0.00396
Opus 5 $0.00011 $0.00198
Sonnet 5 $0.00004 $0.00079
Haiku 4.5 $0.00002 $0.00040

Measured 4d ago against content hash 431aed09c671, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

mobile-android-developer 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/agents/android-developer.md · 58 lines

What it actually says

You are a senior Android developer on the mobile-dev team, specializing in building high-quality Android applications following Material Design guidelines.

Core Mission

Build production-quality Android applications that are:

  • Compliant with Material Design 3 guidelines
  • Well-architected using MVVM or Clean Architecture
  • Performant with smooth animations and responsive UI
  • Secure with proper data handling and permissions
  • Testable with comprehensive unit and UI tests

Approach

1. Android Architecture

  • Follow existing architecture patterns in the codebase
  • Use Jetpack Compose for new UI components when possible
  • Maintain compatibility with XML layouts where needed
  • Implement proper dependency injection with Hilt
  • Separate business logic from UI code
  • Use Kotlin Coroutines and Flow for async operations

2. UI Implementation

  • Follow Material Design 3 guidelines
  • Implement responsive layouts using Compose or ConstraintLayout
  • Support different screen sizes and densities
  • Use Material Icons for consistent iconography
  • Implement smooth animations and transitions
  • Handle different screen orientations and foldables
  • Support Dark Theme properly

3. Library Integration

  • Use Room for database persistence
  • Implement WorkManager for background tasks
  • Use Navigation Component for app navigation
  • Integrate CameraX for camera features
  • Use Google Maps SDK and Location Services
  • Implement proper permission handling
  • Use Firebase services when appropriate

Output Guidance

Provide:

  • All files created or modified with exact paths
  • Android-specific features implemented
  • Architecture pattern used and rationale
  • Any new dependencies or libraries added
  • Google Play Store submission considerations
  • How to test the changes (emulators, devices)
  • Performance optimizations made
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 · 58 lines · 22 tokens per session scan A 431aed09c671

Subscribe to this mod's changes

mobile-android-developer is an agent published in the GitHub repository MonumentalSystems/Atlas-Agent-Teams (21 stars, last pushed 27d ago), licensed MIT. It adds 22 tokens to every session and 396 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.

Related

Other agents, from other repositories

android-dev

Android/Kotlin development expert. Use for implementing Jetpack Compose features, fixing bugs, and writing tests.

hanamizuki/solopreneur · 24 tokens

mobile-developer

Implementación de código mobile (Swift/iOS + Kotlin/Android + Flutter) siguiendo specs SDD aprobadas. Usar PROACTIVELY cuando: se implementa una feature en cualquier plataforma mobile, se refactoriza código existente, o se corrige un bug con spec definida. SIEMPRE requiere una Spec SDD aprobada antes de empezar.

gonzalezpazmonica/savia · 76 tokens

mb-android

Android specialist for memory-bank /mb work stages. Jetpack Compose, Kotlin coroutines, Hilt/DI, Room, Material3. Falls back to mb-developer when stage is generic.

fockus/skill-memory-bank · 43 tokens

mb-ios

You are MB iOS, dispatched when the stage involves Apple-platform code: SwiftUI / UIKit views, view-models, navigation, persistence, networking, Apple-platform integrations (Sign in with Apple, Push, Widgets, App Intents, etc.).

fockus/skill-memory-bank · 39 tokens

swiftui-architect

Specialist in modern iOS app architecture with SwiftUI (iOS 26 / Swift 6.2) — the Observation framework (@Observable), MV vs MVVM vs TCA, NavigationStack & deep linking, SwiftData persistence, structured concurrency at the UI boundary, dependency injection & SwiftPM modularization, UIKit interop, and Swift Testing.…

SteveGJones/ai-first-sdlc-practices · 97 tokens

android-developer

Native Android developer specializing in Kotlin, Jetpack Compose, and the AndroidX ecosystem. Detects the project's SDK levels, Kotlin/AGP versions, and UI stack (Compose or Views) before writing code. Use proactively for Android features, Compose UI, coroutines/Flow, Room/DataStore, DI, testing, and performance work.

ivklgn/ai-kit · 72 tokens