Agent skill

Mobile App Debugging

by secondsky in secondsky/claude-skills

Mobile app debugging for iOS, Android, cross-platform frameworks.

MITAuto-check passedMobile

Install Mobile App Debugging

skills CLI
$ npx skills add secondsky/claude-skills --skill mobile-app-debugging -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install secondsky/claude-skills mobile-app-debugging --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/mobile-app-debugging/skills/mobile-app-debugging .claude/skills/mobile-app-debugging && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
mobile-app-debugging
GitHub stars
227
Token cost
~513 tokens
SKILL.md length
109 words
Files
1
Skills in repo
169
Repo updated
First seen
Licence
MIT

At a glance

Mobile app debugging for iOS, Android, cross-platform frameworks.

  • Performance issues
  • SKILL.md covers iOS Debugging (Xcode), Android Debugging (Android…, React Native and Network Debugging, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Network problems

What it does

Mobile App Debugging is an agent skill from secondsky/claude-skills. Mobile app debugging for iOS, Android, cross-platform frameworks. Use for crashes, memory leaks, performance issues, network problems, or encountering Xcode instruments, Android Profiler, React Native debugger, native bridge errors.

Its SKILL.md is about 510 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Mobile, covering Performance optimization, Debugging and iOS development. It works with Android, Xcode, React Native and iOS. The repository describes itself as: Production-ready skills for Claude Code CLI - Cloudflare, React, Tailwind v4, and AI integrations. The licence is MIT.

When your agent uses it

  • Performance issues
  • Network problems
  • Encountering Xcode instruments
  • Android Profiler

Example prompts

  • “/mobile-app-debugging”

What it can do on your machine

Read from SKILL.md and the folder at commit 8837836. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript, swift and kotlin).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Mobile App Debugging loads about 513 tokens when it runs. Until then it costs about 63 tokens; SKILL.md has 109 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~63
When it runs · the whole SKILL.md, loaded when a task matches
~513

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from secondsky/claude-skills at commit 8837836, republished under its MIT licence (© secondsky). 109 words, ~513 tokens.

Download SKILL.mdSave it as .claude/skills/mobile-app-debugging/SKILL.md (or your agent's skills folder).
name
mobile-app-debugging
description
Mobile app debugging for iOS, Android, cross-platform frameworks. Use for crashes, memory leaks, performance issues, network problems, or encountering Xcode instruments, Android Profiler, React Native debugger, native bridge errors.
license
MIT

Mobile App Debugging

Debug mobile applications across iOS, Android, and cross-platform frameworks.

iOS Debugging (Xcode)

swift
// Breakpoint with condition
// Right-click breakpoint > Edit > Condition: userId == "123"

// LLDB commands
po variable          // Print object
p expression         // Evaluate expression
bt                   // Backtrace
Memory Debugging
  • Use Memory Graph Debugger to find retain cycles
  • Enable Zombie Objects for use-after-free bugs
  • Profile with Instruments > Leaks

Android Debugging (Android Studio)

kotlin
// Logcat filtering
Log.d("TAG", "Debug message")
Log.e("TAG", "Error", exception)

// Filter: tag:MyApp level:error
Common Issues
  • ANR: Check main thread blocking
  • OOM: Profile with Memory Profiler
  • Layout issues: Use Layout Inspector

React Native

javascript
// Remote debugging
// Shake device > Debug JS Remotely

// Console logging
console.log('Debug:', variable);
console.warn('Warning');
console.error('Error');

// Performance Monitor
// Shake > Show Perf Monitor
// Target: 60 FPS, <16ms per frame

Network Debugging

javascript
// Intercept requests
XMLHttpRequest.prototype._send = XMLHttpRequest.prototype.send;
XMLHttpRequest.prototype.send = function() {
  console.log('Request:', this._url);
  this._send.apply(this, arguments);
};

Debug Checklist

  • Test on physical devices (not just simulators)
  • Test on older device models
  • Simulate slow 3G network
  • Test offline mode
  • Check memory under load
  • Test rotation and safe areas
  • Verify 60 FPS target

Performance Targets

MetricTarget
Frame rate60 FPS (16ms/frame)
Memory<100MB
App launch<2 seconds

© secondsky, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in plugins/mobile-app-debugging/skills/mobile-app-debugging of secondsky/claude-skills.

Open the folder on GitHubat commit 8837836

Compare with similar skills

Mobile App Debugging next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Mobile App Debugging compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Mobile App Debugging this skillsecondsky/claude-skills227—~513Automated safety check: PassMIT
Simulator Audio E2Ehyochan/react-native-nitro-sound961—~1.1kAutomated safety check: PassMIT
Debug Rn Native CrashLedgerHQ/ledger-live621—~1.2kAutomated safety check: PassMIT
Mobile App Builderrevfactory/harness-1001.3k—~1.8kAutomated safety check: PassApache-2.0
Apple Crash Log .NET Symbolicationdotnet/skills5.6k1 repos~2.4kAutomated safety check: PassMIT
Diagnosing Stacktrace SymbolicationPostHog/posthog-foss721—~2.2kAutomated safety check: PassMIT

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Questions about Mobile App Debugging

What does Mobile App Debugging do?

Mobile app debugging for iOS, Android, cross-platform frameworks. Mobile App Debugging is an agent skill from secondsky/claude-skills. Mobile app debugging for iOS, Android, cross-platform frameworks.

When should I use Mobile App Debugging?

Mobile App Debugging fits situations like: performance issues; network problems; encountering Xcode instruments; android Profiler.

How do I install Mobile App Debugging in Claude Code?

Run `npx skills add secondsky/claude-skills --skill mobile-app-debugging -a claude-code`. Or copy the skill folder (plugins/mobile-app-debugging/skills/mobile-app-debugging in secondsky/claude-skills) into .claude/skills/mobile-app-debugging in your project. Claude Code loads it when a task matches its description.

How do I install Mobile App Debugging in Codex?

Run `npx skills add secondsky/claude-skills --skill mobile-app-debugging -a codex`. Or copy the skill folder (plugins/mobile-app-debugging/skills/mobile-app-debugging in secondsky/claude-skills) into .agents/skills/mobile-app-debugging in your project. Codex loads it when a task matches its description.

Can I use Mobile App Debugging in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add secondsky/claude-skills --skill mobile-app-debugging -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mobile-app-debugging, .gemini/skills/mobile-app-debugging, .github/skills/mobile-app-debugging and .opencode/skills/mobile-app-debugging in your project.

What does Mobile App Debugging need to run?

SKILL.md names no scripts, command-line tools or credentials: Mobile App Debugging is instructions for the agent only.

Does Mobile App Debugging access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Mobile App Debugging safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Mobile App Debugging use?

Mobile App Debugging is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Mobile App Debugging use?

About 513 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Mobile App Debugging?

Skills that share tags, products or a category with Mobile App Debugging: Simulator Audio E2E (hyochan/react-native-nitro-sound, 961 stars), Debug Rn Native Crash (LedgerHQ/ledger-live, 621 stars), Mobile App Builder (revfactory/harness-100, 1.3k stars) and Apple Crash Log .NET Symbolication (dotnet/skills, 5.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Mobile App Debugging?

secondsky (a GitHub user) maintains it in secondsky/claude-skills, which has 227 GitHub stars. The repository holds 169 skills in this directory. The repository was last updated on September 28, 2026.

Source: secondsky/claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.