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.
npx skills add lifedever/skills-plugin --skill macos-app-scaffoldgit clone --depth 1 https://github.com/lifedever/skills-pluginWrote 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.
[](https://agentmods.dev/skills/lifedever/skills-plugin/macos-app-scaffold)<a href="https://agentmods.dev/skills/lifedever/skills-plugin/macos-app-scaffold"><img src="https://agentmods.dev/badge/skills/lifedever/skills-plugin/macos-app-scaffold.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 81 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Data Exfiltration · line 116 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Rogue Agent · line 165 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Excessive Agency · line 192 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00120 | $0.02623 |
| Opus 5 | $0.00060 | $0.01311 |
| Sonnet 5 | $0.00024 | $0.00525 |
| Haiku 4.5 | $0.00012 | $0.00262 |
Grade A, and why
macos-app-scaffold 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 248 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Create a macOS App Project
Generates a production-grade native macOS app scaffold based on best practices distilled from shipped projects like TaskTick.
Pre-flight Checks
Verify the development environment before starting. Stop and guide the user to install anything that's missing:
xcodebuild -version 2>/dev/null | head -1
swift --version 2>/dev/null | head -1
- Xcode >= 16 (i.e.
xcodebuild -versionreportsXcode 16.xor higher). The scaffold usesswift-tools-version: 6.0; Xcode 15 will fail SPM resolution. Xcode 15 users should upgrade, or confirm they're OK downgrading the generated project to Swift 5.9. - Swift >= 6.0 (same reason as above)
- Generation location defaults to the user's home directory. Confirm with the user first if they want a different location.
Usage
/macos-app-scaffold <AppName> [--bundle-id com.example.app] [--github user/repo]
AppName: required, PascalCase (e.g.MyApp)--bundle-id: optional, defaults tocom.example.<AppName>(please change to your own reverse domain on first use)--github: optional, GitHub repo used for auto-update, format<owner>/<repo>
Generated Output
Generates the project structure below. Ask the user for the creation location first (default: ~/<AppName>-app/).
Project Structure
<AppName>-app/
├── Package.swift
├── Sources/
│ ├── App/
│ │ ├── <AppName>App.swift # @main, multi-window Scene, ModelContainer
│ │ ├── AppDelegate.swift # Cmd+Q → hide to menu bar, shouldReallyQuit
│ │ └── Localization.swift # L10n.tr() helper + LanguageManager
│ ├── Engine/
│ │ ├── UpdateChecker.swift # GitHub Releases API, DMG download/install/restart
│ │ └── NotificationManager.swift
│ ├── Models/
│ │ └── (empty directory, user adds SwiftData models here)
│ ├── Views/
│ │ ├── Main/
│ │ │ └── MainWindowView.swift # NavigationSplitView layout
│ │ ├── MenuBar/
│ │ │ └── MenuBarView.swift # MenuBarExtra popover content
│ │ ├── Settings/
│ │ │ └── SettingsView.swift # TabView: General, Updates, About
│ │ └── Components/
│ │ ├── GlassCard.swift # macOS 26 liquid glass + fallback
│ │ └── PointerCursor.swift # .pointerCursor() pointing-hand modifier
│ ├── Localization/
│ │ ├── en.lproj/
│ │ │ └── Localizable.strings
│ │ └── zh-Hans.lproj/
│ │ └── Localizable.strings
│ └── Resources/
│ └── AppIcon.icns # placeholder icon, user replaces
├── Tests/
│ └── <AppName>Tests.swift
├── scripts/
│ ├── build-dev.sh # dev build: grayscale icon, separate bundle ID
│ └── release.sh # release: arm64 + x86_64 DMG, upload to GitHub Release
├── docs/
│ └── index.html # static landing page, auto-deployed via GitHub Pages
├── .gitignore
├── LICENSE # ask user which open-source license to use
├── CLAUDE.md # Claude Code project documentation
└── .claude/
└── skills/
└── release/
└── SKILL.md # /release <version> release skill
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.
- 8d ago First seen · 248 lines · 120 tokens per session scan A 27a6bd09c479
macos-app-scaffold is a skill published in the GitHub repository lifedever/skills-plugin (11 stars, last pushed 17d ago), licensed MIT. It adds 120 tokens to every session and 2,623 once invoked, about $0.0006 per session on Opus 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 2026-08-30.
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