swiftui-expert-skill SKILL.md skillA

swiftui-expert-skill from patrickserrano/lacquer is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add patrickserrano/lacquer/swiftui-expert-skill@git:20261019.fb8f45f

Pins git:20261019.fb8f45f 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/swiftui-expert-skill/SKILL.md
Versions recorded
5
Latest version
git:20261019.fb8f45f, committed Oct 19, 2026
First version recorded
Jun 17, 2026
Size
12,011 bytes
Repository stars
5
License
MIT

Use when writing, reviewing, or refactoring SwiftUI code — state management, view composition, performance, macOS-specific APIs, or iOS 26+ Liquid Glass adoption. Also triggers whenever an Xcode Instruments `.trace` file is referenced (to analyse it) or the user asks to **record** a new trace — attach to a running app, launch one fresh, or capture a manually-stopped session with the bundled `record_trace.py`.

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

# SwiftUI Expert Skill

## Operating Rules

- Consult `references/latest-apis.md` at the start of every task to avoid deprecated APIs
- Liquid Glass is the system design from the iOS 27 SDK on; design for it by default, and audit an app's UI before moving it to Xcode 27 (use the `swiftui-liquid-glass` skill)
- Use `#available` gating with sensible fallbacks for version-specific APIs

## SwiftUI Code Workflow

### Review existing SwiftUI code
- Read the code under review and identify which topics apply
- Flag deprecated APIs (compare against `references/latest-apis.md`)
- Run the Topic Router below for each relevant topic
- Validate `#available` gating and fallback paths for iOS 26+ features

### Improve existing SwiftUI code
- Audit current implementation against the Topic Router topics
- Replace deprecated APIs with modern equivalents from `references/latest-apis.md`
- Refactor hot paths to reduce unnecessary state updates
- Extract complex view bodies into separate subviews
- Suggest image downsampling when `UIImage(data:)` is encountered (optional optimization, see `references/image-optimization.md`)

### Implement new SwiftUI feature
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add patrickserrano/lacquer/swiftui-expert-skill@sha256:173af1586919aff3

The line at the top of this page pins the label git:20261019.fb8f45f, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_kk6mrhgthemu5dzi.svg)](https://markdownregistry.com/a/art_kk6mrhgthemu5dzi)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Jun 17, 2026 and Oct 19, 2026, about one every 31 days.

versioncommittedcommitsizeaudit
git:20261019.fb8f45f latest2026-10-19 fb8f45f 12,011 BA view · diff
git:20260725.3f0d9432026-07-25 3f0d943 11,914 BA view · diff
git:20260713.49503952026-07-13 4950395 11,684 BA view · diff
git:20260711.5ae0eb92026-07-11 5ae0eb9 11,589 BA view · diff
git:20260617.2b853572026-06-17 2b85357 11,617 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (12011 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

GitHub

patrickserrano/lacquer · 5 stars · license MIT · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_kk6mrhgthemu5dzi
GET https://markdownregistry.com/api/v1/resolve?ref=patrickserrano/lacquer/swiftui-expert-skill
GET https://markdownregistry.com/api/v1/blob/173af1586919aff33ee9f00007ca92d60a5b2e3a2bb94202f205350388c033e7

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.

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