Swiftui Pro
twostraws/SwiftUI-Agent-Skill
Comprehensively reviews SwiftUI code for best practices on modern APIs, maintainability, and performance.
Formats and parses locale-aware numbers, decimals, currencies, percentages, dates, durations, measurements, names, lists, byte counts, and URLs with Foundation FormatStyle and ParseableFormatStyle.
Install Swift Formatstyle
$ npx skills add dpearson2699/swift-ios-skills --skill swift-formatstyle -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install dpearson2699/swift-ios-skills swift-formatstyle --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/swift-formatstyle .claude/skills/swift-formatstyle && rm -rf skills-srcUse ~/.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/
Install the "swift-formatstyle" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/swift-formatstyle into .claude/skills/swift-formatstyle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-formatstyle", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/swift-formatstyleType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add dpearson2699/swift-ios-skills --skill swift-formatstyle -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install dpearson2699/swift-ios-skills swift-formatstyle --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/swift-formatstyle .agents/skills/swift-formatstyle && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "swift-formatstyle" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/swift-formatstyle into .agents/skills/swift-formatstyle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-formatstyle", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add dpearson2699/swift-ios-skills --skill swift-formatstyle -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install dpearson2699/swift-ios-skills swift-formatstyle --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/swift-formatstyle .cursor/skills/swift-formatstyle && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "swift-formatstyle" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/swift-formatstyle into .cursor/skills/swift-formatstyle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-formatstyle", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/dpearson2699/swift-ios-skills.git --path skills/swift-formatstyle--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add dpearson2699/swift-ios-skills --skill swift-formatstyle -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install dpearson2699/swift-ios-skills swift-formatstyle --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/swift-formatstyle .gemini/skills/swift-formatstyle && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "swift-formatstyle" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/swift-formatstyle into .gemini/skills/swift-formatstyle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-formatstyle", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install dpearson2699/swift-ios-skills swift-formatstyleInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add dpearson2699/swift-ios-skills --skill swift-formatstyle -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/swift-formatstyle .github/skills/swift-formatstyle && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "swift-formatstyle" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/swift-formatstyle into .github/skills/swift-formatstyle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-formatstyle", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add dpearson2699/swift-ios-skills --skill swift-formatstyle -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install dpearson2699/swift-ios-skills swift-formatstyle --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/dpearson2699/swift-ios-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/swift-formatstyle .opencode/skills/swift-formatstyle && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "swift-formatstyle" agent skill from https://github.com/dpearson2699/swift-ios-skills/tree/main/skills/swift-formatstyle into .opencode/skills/swift-formatstyle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-formatstyle", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
swift-formatstyle- GitHub stars
- 1.2k
- Token cost
- ~2k tokens
- SKILL.md length
- 747 words
- Files
- 3 (incl. references)
- Skills in repo
- 86
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Formats and parses locale-aware numbers, decimals, currencies, percentages, dates, durations, measurements, names, lists, byte counts, and URLs with Foundation FormatStyle and ParseableFormatStyle.
- Works in 5 steps: Identify the value's semantic type and… → Select the narrowest built-in style and… → Render the exact UI with representative… → …
- Replacing legacy Formatter subclasses
- SKILL.md covers Contents, Workflow, Quick Reference and Selection and Availability, plus 6 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Swift Formatstyle is an agent skill from dpearson2699/swift-ios-skills. Formats and parses locale-aware numbers, decimals, currencies, percentages, dates, durations, measurements, names, lists, byte counts, and URLs with Foundation FormatStyle and ParseableFormatStyle. Use when replacing legacy Formatter subclasses, designing reusable format APIs, using SwiftUI Text(:format:), correcting availability, or testing user-facing formatted output across locales.
Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `evals/evals.json` and `references/formatstyle-recipes.md`).
It sits in Mobile, covering iOS development. It works with SwiftUI. The repository describes itself as: Agent Skills for iOS 26+, Swift 6.3, SwiftUI, and modern Apple frameworks.
When your agent uses it
- Replacing legacy Formatter subclasses
- Designing reusable format APIs
- Using SwiftUI Text(:format:)
- Correcting availability
Example prompts
- “Use the swift-formatstyle skill to format and parses locale-aware numbers, decimals, currencies, percentages, dates, durations, measurements, names…”
- “/swift-formatstyle”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Identify the value's semantic type and whether output is display-only or must round-trip through parsing.
- Select the narrowest built-in style and keep the user's current locale unless a wire format explicitly requires another locale.
- Render the exact UI with representative locales such as en_US, de_DE, ar_SA, and ja_JP.
- Check separators, numbering systems, calendars, currency and unit conventions, text direction, and layout.
- If output or parsing fails, fix the style or surrounding copy, restore the input fixture, and rerun the same locale matrix.
What it can do on your machine
Read from SKILL.md and the folder at commit 8d90fd1. 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 (its code samples are swift).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
sosumi.ai
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
Swift Formatstyle loads about 2k tokens when it runs, and up to ~3k if it reads all its reference files. Until then it costs about 102 tokens; SKILL.md has 747 words of instructions outside code blocks.
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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 747 words (~1,981 tokens).
“Use Foundation's type-safe FormatStyle APIs for user-facing display and ParseableFormatStyle when the same convention must accept input. Route String Catalogs, plurals, localized copy, bundles, and RTL layout to ios-localization; formatting still requires locale review even when no text is translated.”
- name
- swift-formatstyle
Files
SKILL.md and 2 other files (references) in skills/swift-formatstyle of dpearson2699/swift-ios-skills.
- SKILL.md
- evals/evals.json
- references/formatstyle-recipes.md
Open the folder on GitHubat commit 8d90fd1
Compare with similar skills
Swift Formatstyle 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Swift Formatstyle this skilldpearson2699/swift-ios-skills | 1.2k | — | ~2k | Automated safety check: Pass | Custom licence | |
| Swiftui Protwostraws/SwiftUI-Agent-Skill | 5.1k | 2 repos | ~1.5k | Automated safety check: Pass | MIT | |
| Swiftui UI PatternsAFK-surf/OpenBridge | 430 | 4 repos | ~887 | Automated safety check: Pass | MIT | |
| Swiftui Performance Auditharperreed/dotfiles | 334 | 8 repos | ~1.4k | Automated safety check: Pass | None | |
| Hig Project Contextraintree-technology/hig-doctor | 143 | 5 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Hig Components Contentraintree-technology/hig-doctor | 143 | 5 repos | ~1.3k | Automated safety check: Pass | MIT |
Similar skills
Swiftui UI Patterns
AFK-surf/OpenBridge
Best practices and example-driven guidance for building SwiftUI views and components.
Swiftui Performance Audit
harperreed/dotfiles
Audit and improve SwiftUI runtime performance from code review and architecture.
Hig Project Context
raintree-technology/hig-doctor
Create or update a shared Apple design context document that other HIG skills use to tailor guidance.
Hig Components Content
raintree-technology/hig-doctor
Apple Human Interface Guidelines for content display components.
Chunui
liseami/ChunUI
Build iOS apps with the ChunUI design system (Monochrome texture extracted from the production app Zinner/Chat0IM).
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Related
Works with
Categories
Questions about Swift Formatstyle
What does Swift Formatstyle do?
Formats and parses locale-aware numbers, decimals, currencies, percentages, dates, durations, measurements, names, lists, byte counts, and URLs with Foundation FormatStyle and ParseableFormatStyle. Swift Formatstyle is an agent skill from dpearson2699/swift-ios-skills. Formats and parses locale-aware numbers, decimals, currencies, percentages, dates, durations, measurements, names, lists, byte counts, and URLs with Foundation FormatStyle and ParseableFormatStyle.
When should I use Swift Formatstyle?
Swift Formatstyle fits situations like: replacing legacy Formatter subclasses; designing reusable format APIs; using SwiftUI Text(:format:); correcting availability.
How do I install Swift Formatstyle in Claude Code?
Run `npx skills add dpearson2699/swift-ios-skills --skill swift-formatstyle -a claude-code`. Or copy the skill folder (skills/swift-formatstyle in dpearson2699/swift-ios-skills) into .claude/skills/swift-formatstyle in your project. Claude Code loads it when a task matches its description.
How do I install Swift Formatstyle in Codex?
Run `npx skills add dpearson2699/swift-ios-skills --skill swift-formatstyle -a codex`. Or copy the skill folder (skills/swift-formatstyle in dpearson2699/swift-ios-skills) into .agents/skills/swift-formatstyle in your project. Codex loads it when a task matches its description.
Can I use Swift Formatstyle 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 dpearson2699/swift-ios-skills --skill swift-formatstyle -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/swift-formatstyle, .gemini/skills/swift-formatstyle, .github/skills/swift-formatstyle and .opencode/skills/swift-formatstyle in your project.
What does Swift Formatstyle need to run?
SKILL.md names no scripts, command-line tools or credentials: Swift Formatstyle is instructions for the agent only.
Does Swift Formatstyle access the network?
SKILL.md names 1 domain. As links in the text: sosumi.ai. This is read from the text; nothing was executed.
Is Swift Formatstyle 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 Swift Formatstyle use?
Swift Formatstyle has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Swift Formatstyle use?
About 2k tokens (SKILL.md is roughly 7.9k 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 1.1k tokens, read only when the agent opens those files.
What are the alternatives to Swift Formatstyle?
Skills that share tags, products or a category with Swift Formatstyle: Swiftui Pro (twostraws/SwiftUI-Agent-Skill, 5.1k stars), Swiftui UI Patterns (AFK-surf/OpenBridge, 430 stars), Swiftui Performance Audit (harperreed/dotfiles, 334 stars) and Hig Project Context (raintree-technology/hig-doctor, 143 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Swift Formatstyle?
dpearson2699 (a GitHub user) maintains it in dpearson2699/swift-ios-skills, which has 1,175 GitHub stars. The repository holds 86 skills in this directory. The repository was last updated on July 31, 2026.
Source: dpearson2699/swift-ios-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.