What is macos-spm-app-packaging?

A guide and starter layout for building macOS apps with Swift Package Manager instead of an Xcode project. Swift Package Manager is Swift’s tool for organizing, building, and testing packages.

Use it to bootstrap a SwiftPM macOS app, build and run it, assemble an .app bundle, run tests, and optionally sign, notarize, and publish release files.

It covers the project setup and scripts needed to turn Swift code into a macOS app bundle and prepare it for distribution without relying on Xcode.

macos-spm-app-packaging — Skill for Claude Code by SethCalkins

Install

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.

Any agent

npx skills add SethCalkins/claude-ios-swift-plugin --skill macos-spm-app-packaging

Clone the repo

git clone --depth 1 https://github.com/SethCalkins/claude-ios-swift-plugin

Made for: Claude Code.

Or install swift-skills, the plugin that ships this one along with the rest of its 10 skills, 4 commands, 3 agents.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/sethcalkins/claude-ios-swift-plugin/macos-spm-app-packaging/github.svg)](https://agentmods.dev/skills/sethcalkins/claude-ios-swift-plugin/macos-spm-app-packaging)

Your own site

<a href="https://agentmods.dev/skills/sethcalkins/claude-ios-swift-plugin/macos-spm-app-packaging"><img src="https://agentmods.dev/badge/skills/sethcalkins/claude-ios-swift-plugin/macos-spm-app-packaging/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/sethcalkins/claude-ios-swift-plugin/macos-spm-app-packaging"><img src="https://agentmods.dev/badge/skills/sethcalkins/claude-ios-swift-plugin/macos-spm-app-packaging.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 618 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 100% copy Near-identical to another mod in the catalogue.

Token cost

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	$0.00065	$0.00618
Opus 5	$0.00032	$0.00309
Sonnet 5	$0.00013	$0.00124
Haiku 4.5	$0.00006	$0.00062

Measured 12d ago against content hash 9339debc3d72, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

macos-spm-app-packaging 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 12d ago.

The scan reads SKILL.md. This mod also ships 7 executable files (assets/templates/build_icon.sh, assets/templates/compile_and_run.sh, assets/templates/launch.sh, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

This is a copy

100% identical to macos-spm-app-packaging — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/macos-spm-app-packaging/SKILL.md · 41 lines

How it starts

The opening of the file, as written. The whole thing — 41 lines — stays where its author put it; the contents beside it link to each section on GitHub.

macOS SwiftPM App Packaging (No Xcode)

Overview

Bootstrap a complete SwiftPM macOS app folder, then build, package, and run it without Xcode. Use assets/templates/bootstrap/ for the starter layout and references/packaging.md + references/release.md for packaging and release details.

Two-Step Workflow

Bootstrap the project folder
- Copy assets/templates/bootstrap/ into a new repo.
- Rename MyApp in Package.swift, Sources/MyApp/, and version.env.
- Customize APP_NAME, BUNDLE_ID, and versions.
Build, package, and run the bootstrapped app
- Copy scripts from assets/templates/ into your repo (for example, Scripts/).
- Build/tests: swift build and swift test.
- Package: Scripts/package_app.sh.
- Run: Scripts/compile_and_run.sh (preferred) or Scripts/launch.sh.
- Release (optional): Scripts/sign-and-notarize.sh and Scripts/make_appcast.sh.
- Tag + GitHub release (optional): create a git tag, upload the zip/appcast to the GitHub release, and publish.

Templates

assets/templates/package_app.sh: Build binaries, create the .app bundle, copy resources, sign.
assets/templates/compile_and_run.sh: Dev loop to kill running app, package, launch.
assets/templates/build_icon.sh: Generate .icns from an Icon Composer file (requires Xcode install).
assets/templates/sign-and-notarize.sh: Notarize, staple, and zip a release build.
assets/templates/make_appcast.sh: Generate Sparkle appcast entries for updates.
assets/templates/setup_dev_signing.sh: Create a stable dev code-signing identity.
assets/templates/launch.sh: Simple launcher for a packaged .app.
assets/templates/version.env: Example version file consumed by packaging scripts.
assets/templates/bootstrap/: Minimal SwiftPM macOS app skeleton (Package.swift, Sources/, version.env).

Notes

Keep entitlements and signing configuration explicit; edit the template scripts instead of reimplementing.
Remove Sparkle steps if you do not use Sparkle for updates.
Sparkle relies on the bundle build number (CFBundleVersion), so BUILD_NUMBER in version.env must increase for each update.
For menu bar apps, set MENU_BAR_APP=1 when packaging to emit LSUIElement in Info.plist.

Read the full file on GitHub · 41 lines

Files

What ships with it

15 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

12d ago First seen · 41 lines · 65 tokens per session scan A 9339debc3d72

Subscribe to this mod's changes

macos-spm-app-packaging is a skill published in the GitHub repository SethCalkins/claude-ios-swift-plugin (2 stars, last pushed 7mo ago), licensed MIT. It adds 65 tokens to every session and 618 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to macos-spm-app-packaging, differing in 0 lines, and is treated as a copy.

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