macos-development SKILL.md skillA
macos-development from patrickserrano/lacquer is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add patrickserrano/lacquer/macos-development@git:20260827.52d6408Pins git:20260827.52d6408 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- patrickserrano/lacquer
- Path
profiles/ios/skills/macos-development/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260827.52d6408, committed Aug 27, 2026
- First version recorded
- Jul 25, 2026
- Size
- 6,535 bytes
- Repository stars
- 5
- License
- MIT
Use when building or debugging a macOS app and the request involves — (1) AppKit/SwiftUI interop or modernizing AppKit code, (2) App Sandbox / file-access entitlement errors, especially "works in Xcode, fails in TestFlight", (3) menu bar commands, keyboard shortcuts, or a menu item stuck disabled, (4) multi-window scenes (WindowGroup, Window, MenuBarExtra, openWindow), (5) the Settings/Preferences scene, (6) ScreenCaptureKit screen recording or sharing, (7) SwiftUI-on-macOS behavior that…
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 Development
Platform mechanics for macOS apps — windows, menus, sandboxing, AppKit bridging,
ScreenCaptureKit, and where SwiftUI on macOS diverges from iOS. This complements
narrower macOS skills already in this profile: `macos-ci-recipes` (CI-only) and
`release-macos-spm-packaging` (SwiftPM scaffolding/build/packaging, no Xcode
project). For visual/HIG conventions ("does this look like a real Mac app"),
see the third-party `mac-assed-mac-app-skill` — that skill covers appearance,
this one covers the platform APIs underneath it.
Note the name collision with FlowDeck's own "macOS development" guide
(`resources/macos-development.md` in the `flowdeck` skill): that one is about
*driving* a running macOS app (clicks, keystrokes, accessibility automation —
see `flowdeck ui mac`), not the platform APIs a macOS app is built from. Same
name, different subject — for build/run/UI-automation tasks use `flowdeck`
directly rather than this skill.
## Agent behavior contract
1. Identify which of macOS's three structural differences from iOS is in play
before proposing a fix: **multi-window** (state is per-scene, not global),
…Read the whole file at its exact version.
How to install
mdr add patrickserrano/lacquer/macos-development@sha256:f5d1f34f60b5712bThe line at the top of this page pins the label git:20260827.52d6408, 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_vvd64chdsibshhhp)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jul 25, 2026 and Aug 27, 2026, about one every 33 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260827.52d6408 latest | 2026-08-27 | 52d6408 | 6,535 B | A | view · diff |
| git:20260725.3f0d943 | 2026-07-25 | 3f0d943 | 6,118 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 (6535 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
patrickserrano/lacquer · 5 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_vvd64chdsibshhhp GET https://markdownregistry.com/api/v1/resolve?ref=patrickserrano/lacquer/macos-development GET https://markdownregistry.com/api/v1/blob/f5d1f34f60b5712bfaf40678a355749aa6730d3925c83a300880d770da684844
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.