Agent skill

Uikit App Modernization

by superagents-lab in superagents-lab/xcode27-skills

Modernizes UIKit apps for multi-window environments by replacing legacy shared-state APIs with context-appropriate modern alternatives.

No licenceAuto-check passedMobile

Install Uikit App Modernization

skills CLI
$ npx skills add superagents-lab/xcode27-skills --skill uikit-app-modernization -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install superagents-lab/xcode27-skills uikit-app-modernization --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/superagents-lab/xcode27-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/uikit-app-modernization .claude/skills/uikit-app-modernization && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
uikit-app-modernization
GitHub stars
339
Token cost
~4.1k tokens
SKILL.md length
2,292 words
Files
5 (incl. references)
Skills in repo
3
Repo updated
First seen
Licence
None found

At a glance

Modernizes UIKit apps for multi-window environments by replacing legacy shared-state APIs with context-appropriate modern alternatives.

  • Works in 6 steps: Fast Path for Simple Cases → Detection → Analysis → …
  • Tasks that involve iOS development
  • SKILL.md covers Purpose, Scope, Core Principles and Workflow, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Uikit App Modernization is an agent skill from superagents-lab/xcode27-skills. Modernizes UIKit apps for multi-window environments by replacing legacy shared-state APIs with context-appropriate modern alternatives. This includes references to mainScreen, interfaceOrientation, application and scene lifecycle, as well as safe area inset updates.

Its SKILL.md is about 4.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `references/orientation-task.md`, `references/safe-area-task.md` and `references/scene-lifecycle-task.md`).

It sits in Mobile, covering iOS development and Legacy modernization. It works with iOS, Xcode and SwiftUI. The repository describes itself as: Apple's official Agent Skills exported from Xcode 27 — SwiftUI, UIKit modernization, Swift Testing, C bounds-safety, and security hardening for AI coding agents.

When your agent uses it

  • Tasks that involve iOS development
  • Tasks that involve Legacy modernization

Example prompts

  • “Use the uikit-app-modernization skill to moderniz UIKit apps for multi-window environments by replacing legacy shared-state APIs with…”
  • “/uikit-app-modernization”

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Fast Path for Simple Cases
  2. Detection
  3. Analysis
  4. Decision & Validation
  5. Implementation
  6. Final Verification

What it can do on your machine

Read from SKILL.md and the folder at commit 6f9ff8d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Uikit App Modernization loads about 4.1k tokens when it runs, and up to ~24k if it reads all its reference files. Until then it costs about 73 tokens; SKILL.md has 2,292 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~73
When it runs · the whole SKILL.md, loaded when a task matches
~4.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~24k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 2,292 words (~4,095 tokens).

“Modernize UIKit apps to behave correctly on modern iOS by:”

— opening of SKILL.md by superagents-lab
name
uikit-app-modernization

Read the full SKILL.md on GitHub

Files

SKILL.md and 4 other files (references) in uikit-app-modernization of superagents-lab/xcode27-skills.

  • SKILL.md
  • references/orientation-task.md
  • references/safe-area-task.md
  • references/scene-lifecycle-task.md
  • references/uiscreen-task.md

Open the folder on GitHubat commit 6f9ff8d

Compare with similar skills

Uikit App Modernization next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Uikit App Modernization compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Uikit App Modernization this skillsuperagents-lab/xcode27-skills339—~4.1kAutomated safety check: PassNone
Update Swiftui APIsAvdLee/SwiftUI-Agent-Skill3.7k—~1.2kAutomated safety check: PassMIT
SwiftUI Design SkillWholiver/swiftui-design-skill213—~2.8kAutomated safety check: PassMIT
Swiftui Iphone DuoFloWritesCode/fwc-swiftui-skills388—~3.9kAutomated safety check: PassMIT
iOS Marketing CaptureParthJadhav/ios-marketing-capture262—~6.1kAutomated safety check: PassMIT
Write AI Docsamuelhe52/AniShelf141—~1.8kAutomated safety check: PassApache-2.0

Similar skills

  • Update Swiftui APIs

    AvdLee/SwiftUI-Agent-Skill

    Scan Apple's SwiftUI documentation for deprecated APIs and update the SwiftUI Expert Skill with modern replacements.

    3.7k GitHub stars~1.2k tokensUpdated 3 days ago
    MobileAuto-check passed
  • SwiftUI Design Skill

    Wholiver/swiftui-design-skill

    Guides the agent to design distinctive SwiftUI interfaces for iOS and macOS, with six anti-generic rules, a design direction workflow and a five-dimension review.

    213 GitHub stars~2.8k tokensUpdated 5 mo ago
    MobileAuto-check passed
  • Swiftui Iphone Duo

    FloWritesCode/fwc-swiftui-skills

    Adapts and reviews SwiftUI apps for iPhone Duo (Xcode 27.1 / iOS 27.1 SDK) and continuously changing window sizes.

    388 GitHub stars~3.9k tokensUpdated yesterday
    MobileAuto-check passed
  • iOS Marketing Capture

    ParthJadhav/ios-marketing-capture

    A skill your agent uses when the user wants to automate capture of marketing screenshots for a SwiftUI iOS app across multiple locales, devices, or appearances.

    262 GitHub stars~6.1k tokensUpdated 1 mo ago
    MobileAuto-check passed
  • Write AI Doc

    samuelhe52/AniShelf

    Create and maintain curated AniShelf docs-ai/ records for substantial features and non-trivial, decision-shaping fixes (numbered entries with 000-plan.md before implementation and 001-action.md…

    141 GitHub stars~1.8k tokensUpdated 2 days ago
    MobileAuto-check passed
  • Preview Build

    Iron-Ham/XcodePreviews

    Build and capture SwiftUI previews for visual analysis. An agent skill from Iron-Ham/XcodePreviews.

    152 GitHub stars~782 tokensUpdated 3 mo ago
    MobileAuto-check passed

More from superagents-lab/xcode27-skills

  • Audit Xcode Security Settings

    superagents-lab/xcode27-skills

    Audit and enable security-oriented Xcode build settings. An agent skill from superagents-lab/xcode27-skills.

    339 GitHub stars~4.6k tokensUpdated 4 mo ago
    Auto-check passed
  • C Bounds Safety

    superagents-lab/xcode27-skills

    Guide for the C -fbounds-safety language extension. An agent skill from superagents-lab/xcode27-skills.

    339 GitHub stars~732 tokensUpdated 4 mo ago
    Auto-check passed

Works with

Categories

Questions about Uikit App Modernization

What does Uikit App Modernization do?

Modernizes UIKit apps for multi-window environments by replacing legacy shared-state APIs with context-appropriate modern alternatives. Uikit App Modernization is an agent skill from superagents-lab/xcode27-skills. Modernizes UIKit apps for multi-window environments by replacing legacy shared-state APIs with context-appropriate modern alternatives.

When should I use Uikit App Modernization?

Uikit App Modernization fits situations like: tasks that involve iOS development; tasks that involve Legacy modernization.

How do I install Uikit App Modernization in Claude Code?

Run `npx skills add superagents-lab/xcode27-skills --skill uikit-app-modernization -a claude-code`. Or copy the skill folder (uikit-app-modernization in superagents-lab/xcode27-skills) into .claude/skills/uikit-app-modernization in your project. Claude Code loads it when a task matches its description.

How do I install Uikit App Modernization in Codex?

Run `npx skills add superagents-lab/xcode27-skills --skill uikit-app-modernization -a codex`. Or copy the skill folder (uikit-app-modernization in superagents-lab/xcode27-skills) into .agents/skills/uikit-app-modernization in your project. Codex loads it when a task matches its description.

Can I use Uikit App Modernization in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add superagents-lab/xcode27-skills --skill uikit-app-modernization -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/uikit-app-modernization, .gemini/skills/uikit-app-modernization, .github/skills/uikit-app-modernization and .opencode/skills/uikit-app-modernization in your project.

What does Uikit App Modernization need to run?

SKILL.md names no scripts, command-line tools or credentials: Uikit App Modernization is instructions for the agent only.

Does Uikit App Modernization access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Uikit App Modernization safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Uikit App Modernization use?

No licence was found for Uikit App Modernization or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Uikit App Modernization use?

About 4.1k tokens (SKILL.md is roughly 16k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 20k tokens, read only when the agent opens those files.

What are the alternatives to Uikit App Modernization?

Skills that share tags, products or a category with Uikit App Modernization: Update Swiftui APIs (AvdLee/SwiftUI-Agent-Skill, 3.7k stars), SwiftUI Design Skill (Wholiver/swiftui-design-skill, 213 stars), Swiftui Iphone Duo (FloWritesCode/fwc-swiftui-skills, 388 stars) and iOS Marketing Capture (ParthJadhav/ios-marketing-capture, 262 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Uikit App Modernization?

superagents-lab (a GitHub organization) maintains it in superagents-lab/xcode27-skills, which has 339 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on June 9, 2026.

Source: superagents-lab/xcode27-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.