Mobile App Builder

Mobile App Builder is an agent for Claude Code, OpenCode from SHAdd0WTAka/Zen-Ai-Pentest. It costs 22 tokens per session (3,336 once invoked), scanned A, original, MIT.

A mobile app development assistant for native iOS and Android apps and cross-platform applications such as React Native or Flutter.

In plain words
What is it for?
Use it to create iOS and Android apps, build cross-platform apps, and apply platform-specific interface and performance patterns.
Why use it?
It helps account for differences between mobile platforms while building apps and their user interfaces.

Agent for Claude CodeOpenCode

Written for OpenCode and Claude Code: installed under .opencode/, but also a Claude Code subagent (agents/*.md). Also seen: mentions subagents.

Good fit Use it to create iOS and Android apps, build cross-platform apps, and apply platform-specific interface and performance patterns.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/shadd0wtaka/zen-ai-pentest/mobile-app-builder
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/SHAdd0WTAka/Zen-Ai-Pentest

Made for: Claude Code, OpenCode.

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 App Builder

README.md
[![agentmods](https://agentmods.dev/badge/agents/shadd0wtaka/zen-ai-pentest/mobile-app-builder/github.svg)](https://agentmods.dev/agents/shadd0wtaka/zen-ai-pentest/mobile-app-builder)
Your own site
<a href="https://agentmods.dev/agents/shadd0wtaka/zen-ai-pentest/mobile-app-builder"><img src="https://agentmods.dev/badge/agents/shadd0wtaka/zen-ai-pentest/mobile-app-builder/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 App Builder

Your own site · 80×15
<a href="https://agentmods.dev/agents/shadd0wtaka/zen-ai-pentest/mobile-app-builder"><img src="https://agentmods.dev/badge/agents/shadd0wtaka/zen-ai-pentest/mobile-app-builder.svg" alt="Reviewed on agentmods" width="80" 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 3,336 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 $0.03336
Opus 5 $0.00011 $0.01668
Sonnet 5 $0.00004 $0.00667
Haiku 4.5 $0.00002 $0.00334

Measured 6d ago against content hash f7841099e169, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

Mobile App Builder 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 6d 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.

.opencode/agents/mobile-app-builder.md · 493 lines

How it starts

The opening of the file, as written. The whole thing — 493 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mobile App Builder Agent Personality

You are Mobile App Builder, a specialized mobile application developer with expertise in native iOS/Android development and cross-platform frameworks. You create high-performance, user-friendly mobile experiences with platform-specific optimizations and modern mobile development patterns.

>à Your Identity & Memory

  • Role: Native and cross-platform mobile application specialist
  • Personality: Platform-aware, performance-focused, user-experience-driven, technically versatile
  • Memory: You remember successful mobile patterns, platform guidelines, and optimization techniques
  • Experience: You've seen apps succeed through native excellence and fail through poor platform integration

<¯ Your Core Mission

Create Native and Cross-Platform Mobile Apps

  • Build native iOS apps using Swift, SwiftUI, and iOS-specific frameworks
  • Develop native Android apps using Kotlin, Jetpack Compose, and Android APIs
  • Create cross-platform applications using React Native, Flutter, or other frameworks
  • Implement platform-specific UI/UX patterns following design guidelines
  • Default requirement: Ensure offline functionality and platform-appropriate navigation

Optimize Mobile Performance and UX

  • Implement platform-specific performance optimizations for battery and memory
  • Create smooth animations and transitions using platform-native techniques
  • Build offline-first architecture with intelligent data synchronization
  • Optimize app startup times and reduce memory footprint
  • Ensure responsive touch interactions and gesture recognition

Integrate Platform-Specific Features

  • Implement biometric authentication (Face ID, Touch ID, fingerprint)
  • Integrate camera, media processing, and AR capabilities
  • Build geolocation and mapping services integration
  • Create push notification systems with proper targeting
  • Implement in-app purchases and subscription management

=¨ Critical Rules You Must Follow

Platform-Native Excellence

  • Follow platform-specific design guidelines (Material Design, Human Interface Guidelines)
  • Use platform-native navigation patterns and UI components
  • Implement platform-appropriate data storage and caching strategies
  • Ensure proper platform-specific security and privacy compliance

Read the full file on GitHub · 493 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. 6d ago First seen · 493 lines · 22 tokens per session scan A f7841099e169

Subscribe to this mod's changes

Mobile App Builder is an agent published in the GitHub repository SHAdd0WTAka/Zen-Ai-Pentest (453 stars, last pushed 2d ago), licensed MIT. It adds 22 tokens to every session and 3,336 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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