SwiftUI Agent Skill is a set of instructions that helps AI coding assistants write and review Apple SwiftUI interfaces, including navigation, layout, state, accessibility, and performance. Developers use it with Claude Code, Codex, Gemini, Cursor, and other supported agents, and the catalogue entry is the skill itself.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add twostraws/SwiftUI-Agent-Skill --skill swiftui-progit clone --depth 1 https://github.com/twostraws/SwiftUI-Agent-SkillWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/twostraws/swiftui-agent-skill/swiftui-pro)<a href="https://agentmods.dev/skills/twostraws/swiftui-agent-skill/swiftui-pro"><img src="https://agentmods.dev/badge/skills/twostraws/swiftui-agent-skill/swiftui-pro.svg" alt="Measured on agentmods" height="20"></a>- Socket pass
- Snyk pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00036 | $0.00920 |
| Opus 5 | $0.00018 | $0.00460 |
| Sonnet 5 | $0.00007 | $0.00184 |
| Haiku 4.5 | $0.00004 | $0.00092 |
Grade A, and why
swiftui-pro scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
100% identical to swiftui-pro — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Review Swift and SwiftUI code for correctness, modern API usage, and adherence to project conventions. Report only genuine problems - do not nitpick or invent issues.
Review process:
- Check for deprecated API using
references/api.md. - Check that views, modifiers, and animations have been written optimally using
references/views.md. - Validate that data flow is configured correctly using
references/data.md. - Ensure navigation is updated and performant using
references/navigation.md. - Ensure the code uses designs that are accessible and compliant with Apple’s Human Interface Guidelines using
references/design.md. - Validate accessibility compliance including Dynamic Type, VoiceOver, and Reduce Motion using
references/accessibility.md. - Ensure the code is able to run efficiently using
references/performance.md. - Quick validation of Swift code using
references/swift.md. - Final code hygiene check using
references/hygiene.md.
If doing a partial review, load only the relevant reference files.
Core Instructions
- iOS 26 exists, and is the default deployment target for new apps.
- Target Swift 6.2 or later, using modern Swift concurrency.
- As a SwiftUI developer, the user will want to avoid UIKit unless requested.
- Do not introduce third-party frameworks without asking first.
- Break different types up into different Swift files rather than placing multiple structs, classes, or enums into a single file.
- Use a consistent project structure, with folder layout determined by app features.
Output Format
Organize findings by file. For each issue:
- State the file and relevant line(s).
- Name the rule being violated (e.g., "Use
foregroundStyle()instead offoregroundColor()"). - Show a brief before/after code fix.
Skip files with no issues. End with a prioritized summary of the most impactful changes to make first.
Example output:
ContentView.swift
Line 12: Use foregroundStyle() instead of foregroundColor().
What ships with it
15 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- .claude-plugin/plugin.json 378 B
- agents/openai.yaml 330 B
- assets/swiftui-pro-icon.png 3.0 KB
- assets/swiftui-pro-icon.svg 1.5 KB
- references/accessibility.md 2.3 KB
- references/api.md 3.0 KB
- references/data.md 2.9 KB
- references/design.md 2.6 KB
- references/hygiene.md 1.1 KB
- references/navigation.md 1.3 KB
- references/performance.md 2.7 KB
- references/swift.md 4.0 KB
- references/views.md 3.2 KB
- skills/swiftui-pro/references 16 B
- skills/swiftui-pro/SKILL.md 4.4 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 109 lines · 36 tokens per session scan A 8b58a171afc1
swiftui-pro is a skill published in the GitHub repository twostraws/SwiftUI-Agent-Skill (4,671 stars, last pushed 4mo ago), licensed MIT. It adds 36 tokens to every session and 920 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to swiftui-pro, differing in 2 lines, and is treated as a copy.
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