agentmods.dev

macos-development

macos-development is a skill for Claude Code from rshankras/claude-code-apple-skills. It costs 54 tokens per session (707 once invoked), scanned A, original, MIT.

A development guide for macOS apps using Swift, SwiftUI, SwiftData, and AppKit, Apple's older macOS user-interface framework.

In plain words
What is it for?
Use it when building, reviewing, or improving a macOS app, especially one using modern Swift or mixing SwiftUI with AppKit.
Why use it?
It brings platform-specific advice together for code structure, concurrency, data storage, architecture, and macOS interface work.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the apple-skills plugin — 147 skills shipped together , and of apple-skills

not rated 708repo +8 1mo ago A scan SkillSpector: pass 54 tokens original MIT

Good fit Use it when building, reviewing, or improving a macOS app, especially one using modern Swift or mixing SwiftUI with AppKit.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rshankras/claude-code-apple-skills/macos
View source ↗ rshankras/claude-code-apple-skills
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 rshankras/claude-code-apple-skills --skill macos
Clone the repo
git clone --depth 1 https://github.com/rshankras/claude-code-apple-skills

Made for: Claude Code.

Or install apple-skills, the plugin that ships this one along with the rest of its 147 skills.

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.

agentmods badge for macos-development

README.md
[![agentmods](https://agentmods.dev/badge/skills/rshankras/claude-code-apple-skills/macos.svg)](https://agentmods.dev/skills/rshankras/claude-code-apple-skills/macos)
Your own site
<a href="https://agentmods.dev/skills/rshankras/claude-code-apple-skills/macos"><img src="https://agentmods.dev/badge/skills/rshankras/claude-code-apple-skills/macos.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 707 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00054 $0.00707
Opus 5 $0.00027 $0.00353
Sonnet 5 $0.00011 $0.00141
Haiku 4.5 $0.00005 $0.00071

Measured 4d ago against content hash 9b460c772e77, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

macos-development 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 4d 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.

skills/macos/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

macOS Development Expert

Comprehensive guidance for macOS app development. This skill aggregates specialized modules for different aspects of macOS development.

When This Skill Activates

Use this skill when the user:

  • Asks about macOS development best practices
  • Wants code review for macOS/Swift projects
  • Needs help with SwiftUI, SwiftData, or AppKit
  • Is implementing macOS 26 (Tahoe) features
  • Wants UI/UX review against HIG
  • Needs architecture guidance for macOS apps

Available Modules

Read relevant module files based on the user's needs:

coding-best-practices/

Swift 6+ code quality and modern idioms.

  • swift-language.md - Modern Swift patterns
  • modern-concurrency.md - async/await, actors, Sendable
  • data-persistence.md - SwiftData, UserDefaults, Keychain
  • code-organization.md - Project structure and modularity
  • architecture-principles.md - Clean architecture patterns

architecture-patterns/

Software design and architecture.

  • solid-detailed.md - SOLID principles with Swift examples
  • design-patterns.md - Common design patterns
  • modular-design.md - Modular architecture approaches

swiftdata-architecture/

SwiftData deep dive.

  • schema-design.md - Model design and relationships
  • query-patterns.md - Efficient queries and predicates
  • performance.md - Optimization techniques

macos-tahoe-apis/

macOS 26 specific features.

  • tahoe-features.md - New macOS 26 capabilities
  • apple-intelligence.md - AI/ML integration
  • mlx-framework.md - On-device ML with MLX
  • continuity.md - Cross-device features
  • xcode16.md - Xcode 16 tools and features

macos-capabilities/

Platform integration.

  • sandboxing.md - App Sandbox and entitlements
  • System integration features

appkit-swiftui-bridge/

Hybrid development.

  • nsviewrepresentable.md - Wrapping AppKit views
  • State management between frameworks

ui-review-tahoe/

UI/UX review for macOS 26.

  • Liquid Glass design system
  • HIG compliance checking
  • Accessibility review

Read the full file on GitHub · 90 lines

Files

What ships with it

39 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.

  1. 4d ago First seen · 90 lines · 54 tokens per session scan A 9b460c772e77

Subscribe to this mod's changes

macos-development is a skill published in the GitHub repository rshankras/claude-code-apple-skills (708 stars, last pushed 1mo ago), licensed MIT. It adds 54 tokens to every session and 707 once invoked, about $0.0003 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 2026-09-03.

agent-skillsai-toolsanthropicapp-storeappleaso
Related

Other skills, from other repositories

thinking-theory-of-constraints

When throughput or latency is pipeline-limited, identify the single binding constraint and exploit, subordinate, elevate, then recheck—ignore non-constraints.

tjboudreaux/cc-thinking-skills · 37 tokens

electron-desktop

Desktop application development with Electron for Windows, macOS, and Linux. Use when building cross-platform desktop apps, implementing native OS features, or packaging web apps for desktop.

travisjneuman/.claude · 38 tokens

investment-memo-generator

Investment memo creation combining financial analysis, document generation, and structured templates. Use when creating investment memos, pitch decks, deal summaries, or investment committee materials.

travisjneuman/.claude · 37 tokens

impact-report-writer

Nonprofit/NGO impact report generation with data visualization suggestions, outcome metrics, narrative structure, and program data presentation. Use when writing impact reports, annual reports, or program evaluation summaries.

travisjneuman/.claude · 43 tokens

generic-static-feature-developer

Guide feature development for static HTML/CSS/JS sites. Covers patterns, automation workflows, and content validation. Use when adding features, modifying automation, or planning changes.

travisjneuman/.claude · 40 tokens

python-memory-safe-scripts

Memory-safe Python script patterns for long-running processes under systemd MemoryMax constraints. Covers allocator purge (mimalloc/glibc malloctrim), HTTP response lifecycle, DataFrame cleanup, thread-local connection reuse, and periodic GC cadence. Battle-tested through 5 OOM optimization cycles on production GPU…

terrylica/cc-skills · 197 tokens