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 TalissonVitorino/kmp-ios-skills --skill swiftui-uikit-interopgit clone --depth 1 https://github.com/TalissonVitorino/kmp-ios-skillsWrote 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/talissonvitorino/kmp-ios-skills/swiftui-uikit-interop)<a href="https://agentmods.dev/skills/talissonvitorino/kmp-ios-skills/swiftui-uikit-interop"><img src="https://agentmods.dev/badge/skills/talissonvitorino/kmp-ios-skills/swiftui-uikit-interop/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/talissonvitorino/kmp-ios-skills/swiftui-uikit-interop"><img src="https://agentmods.dev/badge/skills/talissonvitorino/kmp-ios-skills/swiftui-uikit-interop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 247 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 | $0.00259 | $0.04235 |
| Opus 5 | $0.00130 | $0.02117 |
| Sonnet 5 | $0.00052 | $0.00847 |
| Haiku 4.5 | $0.00026 | $0.00424 |
Grade A, and why
swiftui-uikit-interop 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 277 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SwiftUI ↔ UIKit interop (iOS 26)
Bridge the two UI frameworks in both directions. Grounded in Apple's SwiftUI and UIKit documentation.
- SwiftUI wraps UIKit:
UIViewRepresentable,UIViewControllerRepresentable. - UIKit hosts SwiftUI:
UIHostingController,UIHostingConfiguration(cells). - Migration bridge: run both in one app; move screen-by-screen.
Contents
- Which tool
- UIViewRepresentable
- Coordinator (delegates / target-action)
- sizeThatFits — sizing into the SwiftUI layout system
- UIViewControllerRepresentable
- Wrapping system controllers (mail / share / photos / PDF)
- UIHostingController — SwiftUI inside UIKit
- UIHostingConfiguration — SwiftUI in cells (iOS 16+)
- @Observable observation tracking in UIKit (iOS 17/18/26)
- Incremental migration
- Correctness checklist
- References:
references/wrapping-system-controllers.md,references/observation-and-migration.md
Which tool
| Direction | You have | Use |
|---|---|---|
| UIKit → SwiftUI | a UIView |
UIViewRepresentable |
| UIKit → SwiftUI | a UIViewController (modal pickers, page VC) |
UIViewControllerRepresentable |
| SwiftUI → UIKit | a View to drop in a UIKit hierarchy |
UIHostingController |
| SwiftUI → UIKit | a View inside a UICollectionView/UITableView cell |
UIHostingConfiguration (iOS 16+) |
- Prefer the controller variant when the UIKit type is a
UIViewController(e.g.PHPickerViewController,MFMailComposeViewController) — don't reach into.view. - All representable methods are
@MainActor @preconcurrency. Treat the struct as a lightweight, recreated-often config value; keep mutable/reference state in theCoordinator.
UIViewRepresentable
Required: makeUIView(context:) (once) and updateUIView(_:context:) (on every relevant state change). UIViewType is inferred from makeUIView's return.
What ships with it
2 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.
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.
- 8d ago First seen · 277 lines · 259 tokens per session scan A 66f2149ec39f
swiftui-uikit-interop is a skill published in the GitHub repository TalissonVitorino/kmp-ios-skills (12 stars, last pushed 17d ago), licensed MIT. It adds 259 tokens to every session and 4,235 once invoked, about $0.0013 per session on Opus 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 2026-09-03.
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