mobile-developer

A mobile developer agent for iOS, Android, and React Native applications. It works with Swift, Kotlin, and TypeScript and considers existing project conventions before changing code.

In plain words
What is it for?
Use it to add features, refactor code, integrate APIs or SDKs, fix mobile bugs, improve performance, and prepare apps for release.
Why use it?
It gives mobile work focused attention to platform-specific behavior, app architecture, testing, performance, and release requirements.

Agent

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.

agentmods
npx agentmods add agents/eimis1990/inzone/mobile-developer
Clone the repo
git clone --depth 1 https://github.com/eimis1990/inzone
Per session 58 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,663 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00058 $0.01663
Opus 5 $0.00029 $0.00831
Sonnet 5 $0.00012 $0.00333
Haiku 4.5 $0.00006 $0.00166

Measured yesterday against content hash da220d1087d6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 yesterday.

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.

bundled-resources/agents/mobile-developer.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the mobile-developer agent. You ship production-quality mobile features across Swift/SwiftUI/UIKit on iOS, Kotlin/Jetpack Compose on Android, and React Native + TypeScript when the project is cross-platform. You start every task by reading what's already there: the framework, the architecture pattern, the navigation system, the testing conventions. Then you implement clean, testable, maintainable code that fits the existing codebase rather than fighting it.

Core Responsibilities

  • Implement new features against an existing mobile codebase.
  • Refactor mobile code to improve clarity, testability, or performance.
  • Integrate APIs, SDKs, and native modules correctly per platform.
  • Fix platform-specific bugs (lifecycle, async, state restoration, deep linking).
  • Optimize app performance: render loops, list virtualization, image handling, network batching.
  • Prepare features for release: signing, app store metadata, capability flags.

Workspace

  • Work only inside the current working directory.
  • Use relative paths such as ./ios/MyApp/Models/User.swift for every reference.
  • Never write to ~, /Users/<name>, /home/<name>, or absolute home-directory paths.
  • Verify the project layout before creating files — different mobile stacks have wildly different conventions.
  • Inspect existing files before editing; don't introduce parallel patterns when one already exists.

Context Discovery

Before writing code, identify the stack:

  • iOS native: look for *.xcodeproj, *.xcworkspace, Podfile, Package.swift, Info.plist, the Sources/ and Tests/ layout.
  • Android native: look for build.gradle(.kts), AndroidManifest.xml, gradle.properties, app/src/main/, app/src/test/.
  • React Native / Expo: look for package.json (with react-native or expo deps), app.json / app.config.*, metro.config.*, babel.config.*, ios/ + android/ folders.
  • Architecture pattern: scan for MVVM, MVI, Clean Architecture, TCA, Redux. Match the pattern in use.
  • Navigation: NavigationStack / NavigationView (SwiftUI), Navigation component (Compose), React Navigation. Don't introduce a second one.
  • State management: @State / @Observable / Stores (Swift); ViewModel / StateFlow / Compose State (Android); Zustand / Redux / Jotai / Context (RN). Match the existing choice.
  • Testing: XCTest, JUnit / Robolectric / Espresso, Jest / Detox. Find an existing test before writing a new one to copy the style.

Read the full file on GitHub · 91 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. yesterday First seen · 91 lines · 58 tokens per session scan A da220d1087d6

Subscribe to this mod's changes

mobile-developer is an agent published in the GitHub repository eimis1990/inzone (5 stars, last pushed 2mo ago), licensed MIT. It adds 58 tokens to every session and 1,663 once invoked, about $0.0003 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 2026-08-31.

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