Borrowing it
Nothing to install: this file belongs to ProjectKumo/KumoApp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ProjectKumo/KumoApp/main/.agents/skills/swiftui-expert-skill/SKILL.mdgit clone --depth 1 https://github.com/ProjectKumo/KumoAppWrote 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/projectkumo/kumoapp/swiftui-expert-skill)<a href="https://agentmods.dev/skills/projectkumo/kumoapp/swiftui-expert-skill"><img src="https://agentmods.dev/badge/skills/projectkumo/kumoapp/swiftui-expert-skill/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/projectkumo/kumoapp/swiftui-expert-skill"><img src="https://agentmods.dev/badge/skills/projectkumo/kumoapp/swiftui-expert-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00164 | $0.02723 |
| Opus 5.5 | $0.00066 | $0.01089 |
| Sonnet 5.5 | $0.00033 | $0.00545 |
| Haiku 4.5 | $0.00016 | $0.00272 |
Grade A, and why
swiftui-expert-skill 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 2mo 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
36 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.
- references/accessibility-patterns.md 5.9 KB
- references/animation-advanced.md 10 KB
- references/animation-basics.md 6.7 KB
- references/animation-transitions.md 7.4 KB
- references/charts-accessibility.md 6.1 KB
- references/charts.md 17 KB
- references/focus-patterns.md 8.7 KB
- references/image-optimization.md 7.2 KB
- references/latest-apis.md 16 KB
- references/layout-best-practices.md 6.8 KB
- references/liquid-glass.md 11 KB
- references/list-patterns.md 12 KB
- references/macos-scenes.md 9.1 KB
- references/macos-views.md 11 KB
- references/macos-window-styling.md 8.6 KB
- references/performance-patterns.md 12 KB
- references/scroll-patterns.md 8.3 KB
- references/sheet-navigation-patterns.md 11 KB
- references/state-management.md 13 KB
- references/text-patterns.md 1.1 KB
- references/trace-analysis.md 14 KB
- references/trace-recording.md 4.8 KB
- references/view-structure.md 24 KB
- scripts/analyze_trace.py 9.9 KB runs code
- scripts/instruments_parser/__init__.py 69 B runs code
- scripts/instruments_parser/causes.py 5.9 KB runs code
- scripts/instruments_parser/correlate.py 6.2 KB runs code
- scripts/instruments_parser/events.py 11 KB runs code
- scripts/instruments_parser/hangs.py 3.4 KB runs code
- scripts/instruments_parser/hitches.py 4.5 KB runs code
- scripts/instruments_parser/summary.py 9.1 KB runs code
- scripts/instruments_parser/swiftui.py 6.6 KB runs code
- scripts/instruments_parser/time_profiler.py 4.3 KB runs code
- scripts/instruments_parser/xctrace.py 3.5 KB runs code
- scripts/instruments_parser/xml_utils.py 7.4 KB runs code
- scripts/record_trace.py 9.3 KB runs code
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.
- 2mo ago First seen · 162 lines · 164 tokens per session scan A 94c3c375764d
swiftui-expert-skill is a skill published in the GitHub repository ProjectKumo/KumoApp (286 stars, last pushed 5mo ago), licensed AGPL-3.0. It adds 164 tokens to every session and 2,723 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
swiftui-expert-skill compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| swiftui-expert-skillProjectKumo/KumoApp | Skill | 286 | 5mo ago | AGPL-3.0 | A | 164 | Claude Code, Codex |
| sweetpadsweetpad-dev/sweetpad | Skill | 1.9k | 2d ago | MIT | A | 90 | Claude Code, Codex |
| swift-expertpersonamanagmentlayer/pcl | Skill | 44 | 11d ago | Apache-2.0 | A | 76 | Claude Code |
| swiftui-view-refactorpatrickserrano/lacquer | Skill | 5 | 4d ago | MIT | A | 103 | Claude Code, Codex |
| app-intents-whats-new-27tartinerlabs/skills | Skill | 8 | today | MIT | A | 205 | Claude Code, Codex |
| expo-modulesfatihkan/badi | Skill | 7 | 1mo ago | MIT | A | 77 | Claude Code |
| watchos-developmentpatrickserrano/lacquer | Skill | 5 | 4d ago | MIT | A | 71 | Claude Code, Codex |