electron-mas-checker-skill

A Claude Skill that audits an Electron macOS app before submission to the Mac App Store (MAS). It checks your package.json, entitlements .plist files, Info.plist, source code patterns, and built .app bundle — then produces a structured BLOCKERS / WARNINGS / PASSED report with actionable fixes.

What it checks

• Build target is mas (not darwin)
• App Sandbox entitlements (main + inherit)
• MAS-incompatible entitlements (e.g. cs.allow-jit)
• ElectronTeamID present in Info.plist
• All required Info.plist keys
• Privacy purpose strings (NS*UsageDescription)
• autoUpdater / crashReporter guarded by process.mas
• Unsigned binaries inside the .app bundle
• Quarantine attribute (required clean since Feb 2026)
• Code signing validity
• Account deletion flow (required since June 2022)
• App Store Connect metadata completeness
• Cryptographic export compliance
• All §2.4.5 Mac-specific App Review Guidelines

Installation

Claude Code — project level (recommended, commits with your repo)

mkdir -p your-electron-app/.claude/skills/electron-mas-checker
cp SKILL.md electron-mas-knowledge-base.md \
  your-electron-app/.claude/skills/electron-mas-checker/

Claude Code — global (available in all your projects)

mkdir -p ~/.claude/skills/electron-mas-checker
cp SKILL.md electron-mas-knowledge-base.md \
  ~/.claude/skills/electron-mas-checker/

Claude.ai (browser/desktop)

1. ZIP this folder so the folder itself is at the root:

   zip -r electron-mas-checker-skill.zip electron-mas-checker-skill/

2. Go to Settings → Customize → Skills → upload the ZIP.

Usage

Open Claude Code inside your Electron project, then:

# Auto-trigger
Check my app for Mac App Store submission

# Direct invoke
/electron-mas-checker

# Point at a built bundle
I've built the .app at dist/mas/YourApp.app — run the full signing and bundle checks

Keeping it up to date

When Apple publishes a new App Review Guidelines revision, update electron-mas-knowledge-base.md with the changes. The guidelines page is at: https://developer.apple.com/app-store/review/guidelines/

Current knowledge base is built against: Apple App Review Guidelines — February 6, 2026

License

MIT — see LICENSE