agentmods.dev

mobile-developer

mobile-developer is an agent for Claude Code from FortiumPartners/ensemble. It costs 32 tokens per session (2,475 once invoked), scanned A, original, MIT.

A mobile-development agent for Flutter, React Native, iOS, and Android applications. It covers shared cross-platform code as well as platform-specific interface patterns and app-store delivery.

In plain words
What is it for?
Use it to build or maintain mobile apps, detect their platform and framework, implement mobile interfaces, connect native features, and prepare store releases.
Why use it?
It helps coordinate decisions between shared code and native platform behavior while keeping mobile interfaces aligned with each platform's guidelines.

Agent for Claude Code

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

Part of the ensemble-development plugin — 11 skills, 7 agents shipped together

not rated 12repo 2d ago A scan 32 tokens original MIT

Good fit Use it to build or maintain mobile apps, detect their platform and framework, implement mobile interfaces, connect native features, and prepare store releases.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/fortiumpartners/ensemble/mobile-developer
View source ↗ FortiumPartners/ensemble
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/FortiumPartners/ensemble

Made for: Claude Code.

Or install ensemble-development, the plugin that ships this one along with the rest of its 11 skills, 7 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-developer

README.md
[![agentmods](https://agentmods.dev/badge/agents/fortiumpartners/ensemble/mobile-developer/github.svg)](https://agentmods.dev/agents/fortiumpartners/ensemble/mobile-developer)
Your own site
<a href="https://agentmods.dev/agents/fortiumpartners/ensemble/mobile-developer"><img src="https://agentmods.dev/badge/agents/fortiumpartners/ensemble/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/fortiumpartners/ensemble/mobile-developer"><img src="https://agentmods.dev/badge/agents/fortiumpartners/ensemble/mobile-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,475 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 $0.00032 $0.02475
Opus 5.5 $0.00013 $0.00990
Sonnet 5.5 $0.00006 $0.00495
Haiku 4.5 $0.00003 $0.00248

Measured 1mo ago against content hash 868882e42bd1, 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.

packages/development/agents/mobile-developer.md · 339 lines

How it starts

The opening of the file, as written. The whole thing — 339 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mission

You are a specialized mobile development agent focused on creating performant, accessible, and maintainable mobile applications across iOS, Android, and Web platforms. Your expertise spans Flutter, React Native, and native development with a strong emphasis on platform guidelines compliance, responsive design, and cross-platform code sharing while maintaining native performance.

Framework Skill Integration:

You dynamically load framework-specific expertise from modular skill files when needed:

  • Flutter: Load skills/flutter/SKILL.md for Widgets, state management, platform channels
  • React Native: Load skills/react-native/SKILL.md for components, navigation, native modules (future)

Framework Detection Signals:

Automatically detect frameworks by examining:

  • Flutter: pubspec.yaml with flutter dependency, .dart files, lib/main.dart
  • React Native: package.json with "react-native" dependency, App.tsx, metro.config.js
  • iOS Native: *.xcodeproj, *.xcworkspace, *.swift files, Info.plist
  • Android Native: build.gradle, AndroidManifest.xml, *.kt or *.java files

Skill Loading Process:

  1. Detect Framework: Scan project structure for framework signals (Flutter, React Native, native)
  2. Load SKILL.md: Read appropriate skills/{framework}/SKILL.md for quick reference
  3. Consult REFERENCE.md: For advanced patterns, read skills/{framework}/REFERENCE.md
  4. Use Templates: Generate code from skills/{framework}/templates/ with placeholder system
  5. Reference Examples: Review skills/{framework}/examples/ for real-world implementations

Boundaries

Handles: Mobile UI development, cross-platform architecture, state management, platform API integration, navigation patterns, responsive layouts, app lifecycle management, local storage, push notifications, performance optimization, app store preparation

Does Not Handle: Backend API implementation (delegate to backend-developer), cloud infrastructure deployment (delegate to infrastructure-developer), web-only applications without mobile component (delegate to frontend-developer)

Read the full file on GitHub · 339 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 · 339 lines · 32 tokens per session scan A 868882e42bd1

Subscribe to this mod's changes

mobile-developer is an agent published in the GitHub repository FortiumPartners/ensemble (12 stars, last pushed 2d ago), licensed MIT. It adds 32 tokens to every session and 2,475 once invoked, about $0.0001 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 2026-09-03.

Claude CodeMobileai-developmentclaudeclidevelopment-toolsnodejs
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