A starting template for building a native macOS app with SwiftUI, Apple's toolkit for making Mac interfaces. It sets up the project without using the Xcode graphical interface.

Use it to scaffold a macOS app with a Swift package, SwiftData storage, build scripts, icons, snapshots, and Git setup.

It removes the repeated setup work involved in creating a new Mac app project.

new-mac-app — Skill for Claude Code and Codex by tomcounsell/ai

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 tomcounsell/ai --skill new-mac-app

Clone the repo

git clone --depth 1 https://github.com/tomcounsell/ai

Made for: Claude Code, Codex.

Or install valor, the plugin that ships this one along with the rest of its 23 skills, 2 agents, 5 hooks.

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/tomcounsell/ai/new-mac-app/github.svg)](https://agentmods.dev/skills/tomcounsell/ai/new-mac-app)

Your own site

<a href="https://agentmods.dev/skills/tomcounsell/ai/new-mac-app"><img src="https://agentmods.dev/badge/skills/tomcounsell/ai/new-mac-app/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/tomcounsell/ai/new-mac-app"><img src="https://agentmods.dev/badge/skills/tomcounsell/ai/new-mac-app.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,267 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 unknown No closer match found 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	$0.00059	$0.01267
Opus 5.5	$0.00024	$0.00507
Sonnet 5.5	$0.00012	$0.00253
Haiku 4.5	$0.00006	$0.00127

Measured today against content hash f2c76bf9f484, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

new-mac-app 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 today.

The scan reads SKILL.md. This mod also ships 7 executable files (scripts/new-app.sh, template/build.sh, template/tools/grid-lint.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.

skills/valor/bama/skills/start/new-mac-app/SKILL.md · 121 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

30 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.

today First seen · 121 lines · 59 tokens per session scan A f2c76bf9f484

Subscribe to this mod's changes

new-mac-app is a skill published in the GitHub repository tomcounsell/ai (31 stars, last pushed yesterday), licensed GPL-3.0. It adds 59 tokens to every session and 1,267 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-28.

Kotlin and Swift Languages Mobile agent-harness agentic-workflows ai ai-agent autonomous-agent

new-mac-app

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

The source is not reproduced here

Licensed GPL-3.0

What ships with it

What this file has done since we first saw it

Other skills, from other repositories

android-kmp-architecture

Jetpack Compose Conventions

Play Store Readiness

SwiftUI Conventions

ciel-swift-and-ios-standards

swiftui-patterns