mobile-developer

mobile-developer is an agent for Claude Code from HermeticOrmus/claude-code-game-development. It costs 52 tokens per session (1,553 once invoked), scanned A, a copy of mobile-developer, MIT.

A specialist for building mobile applications with React Native, Flutter, or native iOS and Android technologies.

In plain words
What is it for?
Use it to build or optimize mobile features, migrate React Native architecture, connect native modules, improve bundling, support offline synchronization, or prepare apps for distribution.
Why use it?
It helps developers handle mobile architecture, performance, platform-specific integrations, and code shared across platforms.

Agent for Claude Code

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

Part of the frontend-mobile-development plugin — 1 command, 1 agent shipped together

Good fit Use it to build or optimize mobile features, migrate React Native architecture, connect native modules, improve bundling, support offline synchronization, or prepare apps for distribution.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/hermeticormus/claude-code-game-development/mobile-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/HermeticOrmus/claude-code-game-development

Made for: Claude Code.

Or install frontend-mobile-development, the plugin that ships this one along with the rest of its 1 command, 1 agent.

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-developer

README.md
[![agentmods](https://agentmods.dev/badge/agents/hermeticormus/claude-code-game-development/mobile-developer/github.svg)](https://agentmods.dev/agents/hermeticormus/claude-code-game-development/mobile-developer)
Your own site
<a href="https://agentmods.dev/agents/hermeticormus/claude-code-game-development/mobile-developer"><img src="https://agentmods.dev/badge/agents/hermeticormus/claude-code-game-development/mobile-developer/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 mobile-developer

Your own site · 80×15
<a href="https://agentmods.dev/agents/hermeticormus/claude-code-game-development/mobile-developer"><img src="https://agentmods.dev/badge/agents/hermeticormus/claude-code-game-development/mobile-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,553 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 100% copy Near-identical to another mod 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 $0.00052 $0.01553
Opus 5.5 $0.00021 $0.00621
Sonnet 5.5 $0.00010 $0.00311
Haiku 4.5 $0.00005 $0.00155

Measured 1mo ago against content hash 922033891903, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mobile-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 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.

Origin

This is a copy

100% identical to mobile-developer — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/frontend-mobile-development/agents/mobile-developer.md · 185 lines

How it starts

The opening of the file, as written. The whole thing — 185 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a mobile development expert specializing in cross-platform and native mobile application development.

Purpose

Expert mobile developer specializing in React Native, Flutter, and native iOS/Android development. Masters modern mobile architecture patterns, performance optimization, and platform-specific integrations while maintaining code reusability across platforms.

Capabilities

Cross-Platform Development

  • React Native with New Architecture (Fabric renderer, TurboModules, JSI)
  • Flutter with latest Dart 3.x features and Material Design 3
  • Expo SDK 50+ with development builds and EAS services
  • Ionic with Capacitor for web-to-mobile transitions
  • .NET MAUI for enterprise cross-platform solutions
  • Xamarin migration strategies to modern alternatives
  • PWA-to-native conversion strategies

React Native Expertise

  • New Architecture migration and optimization
  • Hermes JavaScript engine configuration
  • Metro bundler optimization and custom transformers
  • React Native 0.74+ features and performance improvements
  • Flipper and React Native debugger integration
  • Code splitting and bundle optimization techniques
  • Native module creation with Swift/Kotlin
  • Brownfield integration with existing native apps

Flutter & Dart Mastery

  • Flutter 3.x multi-platform support (mobile, web, desktop, embedded)
  • Dart 3 null safety and advanced language features
  • Custom render engines and platform channels
  • Flutter Engine customization and optimization
  • Impeller rendering engine migration from Skia
  • Flutter Web and desktop deployment strategies
  • Plugin development and FFI integration
  • State management with Riverpod, Bloc, and Provider

Native Development Integration

  • Swift/SwiftUI for iOS-specific features and optimizations
  • Kotlin/Compose for Android-specific implementations
  • Platform-specific UI guidelines (Human Interface Guidelines, Material Design)
  • Native performance profiling and memory management
  • Core Data, SQLite, and Room database integrations
  • Camera, sensors, and hardware API access
  • Background processing and app lifecycle management

Read the full file on GitHub · 185 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. 1mo ago First seen · 185 lines · 52 tokens per session scan A 922033891903

Subscribe to this mod's changes

mobile-developer is an agent published in the GitHub repository HermeticOrmus/claude-code-game-development (72 stars, last pushed 15d ago), licensed MIT. It adds 52 tokens to every session and 1,553 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to mobile-developer, differing in 0 lines, and is treated as a copy.

Related

Other agents, from other repositories

Demonstrate

Agent for demonstrating VS Code features.

microsoft/vscode · 10 tokens

playwright-test-generator

Use this agent when you need to create automated browser tests using Playwright Examples: Context: User wants to generate a test for the test plan item.

microsoft/playwright · 151 tokens

.NET-Notebook-Migration-Agent

Expert .NET and documentation transformation agent that migrates Polyglot Jupyter notebooks into clean Markdown and companion .NET sample code.

microsoft/ai-agents-for-beginners · 33 tokens

AVM Owner Triage

Triage open GitHub issues across the Azure Verified Modules (AVM) repos an owner maintains. Splits the backlog into a Copilot-delegatable pile and a human pile, produces a report with a delegation ratio, and never comments or assigns without explicit user approval.

github/awesome-copilot · 61 tokens

Ultimate Transparent Thinking Beast Mode

Agent "Ultimate Transparent Thinking Beast Mode" from github/awesome-copilot, covering quantum cognitive architecture, phase 2: adversarial intelligence & red-team analysis, phase 3: implementation & iterative refinement and phase 4: comprehensive verification & completion.

github/awesome-copilot · 11 tokens

code-reviewer

Performs thorough code reviews for the Notebooks in the Cookbook repo, focusing on Python/Jupyter best practices, and project-specific standards. Use this agent proactively after writing any significant code changes, especially when modifying notebooks, Github Actions, and scripts.

anthropics/claude-cookbooks · 52 tokens