Shotkit

Open source Claude Code agent skills for iOS developers and content creators on Mac.

Built by Nicolò Curioni 🔸 — @nicolocurioni96

Install

Homebrew (recommended)

brew tap nicolocurioni96/tools
brew install shotkit

Then use the shotkit CLI directly:

shotkit doctor                                            # verify environment before you start
shotkit init                                              # connect to App Store Connect
shotkit capture --bundle-id com.app.id --deeplinks "..."  # auto-capture from Simulator
shotkit generate --app-name "MyApp" --template trending   # generate with trending styles
shotkit upload --dir ./screenshots-output                  # upload to App Store Connect

As an Agent Skill

Install all skills at once:

npx ai-agent-skills install nicolocurioni96/withnico-skills

Install a single skill:

npx ai-agent-skills install nicolocurioni96/withnico-skills --skill shotkit

Or register as a Claude Code plugin:

/plugin install withnico-skills@nicolocurioni96

Works with Claude Code, Cursor, Codex, Gemini CLI, OpenCode, and any agent following the Agent Skills open standard.

Skills

More skills coming — see Roadmap.

shotkit

The full App Store screenshot workflow in one Claude Code skill.

Trigger phrases:

• "create my App Store screenshots"
• "generate screenshots for my app"
• "design screenshot templates"
• "capture simulator screenshots"
• "build my App Store creatives"

What it does:

1. Auto-Capture — boots Simulator devices, launches your app, navigates via deep links, sets a clean status bar, and captures screenshots — fully automated, zero manual interaction
2. Copy — generates locale-aware headlines (max 30 chars) + sublines (max 60 chars) per screenshot
3. Composite — renders styled images using Pillow with 6 template styles including trending auto-styles
4. Organize & Validate — outputs an ASC-ready folder structure, validates dimensions
5. App Store Connect — native integration to upload, update, and download screenshots directly

6 Template Styles:

Trending palettes: aurora, sunset-pop, midnight, ocean, coral, forest, neon, slate, peach, electric — or auto-extract from your app icon.

Device frames:
Add realistic Apple device bezels with --frame device:

shotkit generate --app-name "MyApp" --captures ./raw --template bold --frame device --frame-color natural-titanium

Frames include Dynamic Island, side buttons, and accurate corner radii. Run shotkit frame-colors to list all options.

Note on device likenesses. Shotkit renders stylised bezels programmatically — it does not embed real Apple product photography. When shipping to the App Store, follow Apple's Marketing Resources & Identity Guidelines on how iPhone, iPad, and other Apple product silhouettes may be used in your creatives.

Device support (2025/2026):

• iPhone 6.9" — 1320 × 2868 px ✅ mandatory
• iPhone 6.7" — 1290 × 2796 px
• iPhone 6.5" — 1242 × 2688 px
• iPad 13" — 2064 × 2752 px ✅ mandatory (if iPad)
• iPad 12.9" — 2048 × 2732 px

Locale support:
en-US, it, de, ja, fr, es, pt-BR, ko — tone-adapted per market.

App Store Connect integration:

shotkit init                           # connect with your API key
shotkit apps                           # list your apps
shotkit download --output ./backup     # download existing screenshots
shotkit upload --dir ./screenshots-output   # upload new screenshots
shotkit update --dir ./screenshots-output   # replace existing screenshots

Requirements:

• macOS only
• Xcode installed (for Simulator capture)
• Python 3.8+ (auto-detected)
• Pillow, PyJWT, cryptography — auto-installed into an isolated venv at ~/.shotkit/venv. Set SHOTKIT_LEGACY_INSTALL=1 before shotkit install-deps to keep the pre-2.1 behaviour of installing into system Python.
• App Store Connect API key (for upload/download — create one here)

Quick start:

# 1. Connect to App Store Connect
shotkit init

# 2. Full pipeline in one command
shotkit screenshots \
  --bundle-id com.yourapp.bundleid \
  --app-name "YourApp" \
  --template trending \
  --icon ./icon.png \
  --deeplinks "myapp://home,myapp://detail,myapp://settings" \
  --screens "home,detail,settings"

# 3. Upload to App Store Connect
shotkit upload --dir ./screenshots-output

Or step by step:

shotkit capture --bundle-id com.app.id --deeplinks "myapp://home,myapp://detail"
shotkit generate --app-name "MyApp" --captures ./raw --template trending --palette aurora
shotkit validate --dir ./screenshots-output
shotkit upload --dir ./screenshots-output

Key features:

• Fully automated Simulator capture — zero manual interaction
• 10 curated trending palettes + auto-extract from app icon
• Native App Store Connect integration — upload, download, update
• Multi-device, multi-locale support
• ASC-ready folder structure with validation

Troubleshooting

shotkit doctor first. It reports which of Python, Pillow, PyJWT, cryptography, xcrun, a booted Simulator, and .shotkit.json are present, and prints a targeted hint for each miss.

Simulator won't boot. Verify the device name matches an installed runtime:

xcrun simctl list devices available

Pass the exact name to --devices-sim, e.g. --devices-sim "iPhone 16 Pro Max". If the runtime is missing, install it in Xcode → Settings → Platforms.

Deep link isn't recognised. Confirm the URL scheme is registered in your app's Info.plist (CFBundleURLTypes) and that the app is already installed and launched at least once on the target Simulator. Test the deep link manually first:

xcrun simctl openurl booted "myapp://home"

Upload fails with 403. The API key needs the Developer or App Manager role in App Store Connect → Users and Access → Keys. The key you generated must have access to the app you selected during shotkit init.

Upload fails with "alpha channel not permitted". App Store Connect rejects PNGs with transparency. Run shotkit validate --dir ./screenshots-output — v2.2 flags this as a warning; flatten the offending PNGs (open in Preview, export as PNG without alpha) and re-upload.

Python packages not found. If Homebrew isn't managing shotkit for you, run:

shotkit install-deps

That creates ~/.shotkit/venv and installs Pillow, PyJWT, and cryptography there. To force the pre-2.1 behaviour of installing into system Python, prefix with SHOTKIT_LEGACY_INSTALL=1.

Roadmap

Contributing

PRs welcome. Each skill lives in skills/<skill-name>/ with:

skills/my-skill/
├── SKILL.md
├── scripts/
└── references/

Follow the Agent Skills open standard for SKILL.md format.

License

MIT — see LICENSE

Author

Nicolò Curioni — withnico.com · @nicolocurioni96

iOS Engineer · AI Evangelist · Indie Developer · Content Creator

Discord: https://discord.gg/JXgrVwqa8b