macos-programmer SKILL.md skillA
macos-programmer from pyroxin/opinionated-claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add pyroxin/opinionated-claude-skills/macos-programmer@git:20260906.756f678Pins git:20260906.756f678 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- pyroxin/opinionated-claude-skills
- Path
opinionated-apple-development/skills/macos-programmer/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260906.756f678, committed Sep 6, 2026
- First version recorded
- Nov 29, 2025
- Size
- 45,874 bytes
- Repository stars
- 9
- License
- EPL-2.0
macOS-specific development patterns, platform APIs, and decision frameworks. Use when developing Mac apps, macOS applications, Cocoa/AppKit code, or making SwiftUI vs AppKit decisions. Covers NSWindow management, NSDocument architecture, sandboxing, code signing, notarization, and macOS UI patterns. Applies to Mac Catalyst considerations.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# macOS Programming <skill_scope skill="macos-programmer"> **Related skills:** - `swift-programmer` — Swift language fundamentals and Swift 6 concurrency - `software-engineer` — General software engineering principles and system architecture - `test-driven-development` — Testing philosophy and practices This skill covers macOS-specific development patterns, platform APIs, and decision frameworks. It applies when developing Mac apps, working with Cocoa/AppKit code, or making SwiftUI vs AppKit decisions. </skill_scope> ## Core Philosophy <core_philosophy> **Hybrid by default.** Production Mac apps commonly combine SwiftUI and AppKit: SwiftUI for most view content, AppKit where the platform's window, text, and event systems are exposed only there. Where the line falls varies by app; the case studies in `<swiftui_vs_appkit_decision>` show teams landing at different points, and each macOS release moves some formerly AppKit-only capability into SwiftUI (see `<recent_changes>`). Treat AppKit fallback as expected work rather than a failure of SwiftUI, and re-check the boundary when the deployment target moves. …
Read the whole file at its exact version.
How to install
mdr add pyroxin/opinionated-claude-skills/macos-programmer@sha256:6ea76a301e2b5f86The line at the top of this page pins the label git:20260906.756f678, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_kzedunyovzrzkjdn)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Nov 29, 2025 and Sep 6, 2026, about one every 141 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260906.756f678 latest | 2026-09-06 | 756f678 | 45,874 B | A | view · diff |
| git:20251203.46a896d | 2025-12-03 | 46a896d | 27,506 B | A | view · diff |
| git:20251129.c7223ee | 2025-11-29 | c7223ee | 26,780 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (45874 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
pyroxin/opinionated-claude-skills · 9 stars · license EPL-2.0 · pushed 2026-10-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kzedunyovzrzkjdn GET https://markdownregistry.com/api/v1/resolve?ref=pyroxin/opinionated-claude-skills/macos-programmer GET https://markdownregistry.com/api/v1/blob/6ea76a301e2b5f86a1fda77c5e2d7707ae255dba047d3f86704df140b7a5976b
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.