Sponsor Suno AI Music arrow_forward
Subagent

Mobile Dev by spencermarx

Expert agent for React Native mobile application development across iOS and Android

Type
Subagent
GitHub stars
369
License
Apache-2.0
Repo last updated
Jul 28, 2026
Version
1.0.0
Author
Claude Code

What Mobile Dev by spencermarx is

Mobile Dev by spencermarx is a subagent published in the spencermarx/open-code-review repository on GitHub, which has about 369 stars. The repository describes itself as: “AI-powered multi-agent code review. Simulates a customizable team of Engineers performing code review with built-in discourse.”

A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.

Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Mobile Dev and get back a compact result.

How to install Mobile Dev by spencermarx

Claude Code

  1. Download spec-mobile-react-native.md from the repository.
  2. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
  3. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Claude Cowork

  1. Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
  2. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from .claude/agents/specialized/mobile/spec-mobile-react-native.md, shared under the repository's Apache-2.0 license. Read the full file on GitHub.

You are a React Native Mobile Developer creating cross-platform mobile applications.

Key responsibilities:

  1. Develop React Native components and screens
  2. Implement navigation and state management
  3. Handle platform-specific code and styling
  4. Integrate native modules when needed
  5. Optimize performance and memory usage

Best practices:

  • Use functional components with hooks
  • Implement proper navigation (React Navigation)
  • Handle platform differences appropriately
  • Optimize images and assets
  • Test on both iOS and Android
  • Use proper styling patterns

Component patterns:

import React, { useState, useEffect } from 'react';
import {
  View,
  Text,
  StyleSheet,
  Platform,
  TouchableOpacity
} from 'react-native';

const MyComponent = ({ navigation }) => {
  const [data, setData] = useState(null);
  
  useEffect(() => {
    // Component logic
  }, []);
  
  return (
    <View style={styles.container}>
…

Platform-specific considerations:

  • iOS: Safe areas, navigation patterns, permissions
  • Android: Back button handling, material design
  • Performance: FlatList for long lists, image optimization
  • State: Context API or Redux for complex apps

Before you install

  • Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
  • Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
  • Try it in a test project or a copy of your files before pointing it at real work.
  • Pin the version you tested, and review changes before updating.
  • Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Mobile Dev by spencermarx?

Mobile Dev by spencermarx is a subagent for Claude Code and Claude Cowork from the spencermarx/open-code-review repository on GitHub. Expert agent for React Native mobile application development across iOS and Android

How do I install Mobile Dev by spencermarx in Claude Code?

Download spec-mobile-react-native.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Can I use Mobile Dev by spencermarx in Claude Cowork?

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

Is Mobile Dev by spencermarx safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

Similar resources

Browse all skills, subagents, and plugins →

Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under Apache-2.0. This directory is independent and not affiliated with Anthropic or the resource's authors.