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-webkitgit 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-webkit)<a href="https://agentmods.dev/skills/talissonvitorino/kmp-ios-skills/swiftui-webkit"><img src="https://agentmods.dev/badge/skills/talissonvitorino/kmp-ios-skills/swiftui-webkit/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-webkit"><img src="https://agentmods.dev/badge/skills/talissonvitorino/kmp-ios-skills/swiftui-webkit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector 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 | $0.00205 | $0.03912 |
| Opus 5 | $0.00102 | $0.01956 |
| Sonnet 5 | $0.00041 | $0.00782 |
| Haiku 4.5 | $0.00020 | $0.00391 |
Grade A, and why
swiftui-webkit 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 — 356 lines — stays where its author put it; the contents beside it link to each section on GitHub.
WebKit for SwiftUI (iOS / macOS 26+)
Native SwiftUI web content: no UIViewRepresentable, no WKWebView bridging.
WebView is the on-screen view; WebPage (an @Observable model) loads, observes,
and controls the content. Grounded in Apple's WebKit-for-SwiftUI framework.
- Availability:
WebView/WebPageare iOS 26 / macOS 26 / visionOS 26+. For earlier deployment targets wrapWKWebViewin aUIViewRepresentable— see Fallback andreferences/wkwebview-fallback.md. - State:
WebPageis a plain@Observableclass — observe it exactly like anyswiftui-observationmodel (@State private var page = WebPage()). - Security: the web layer is an attack surface. Restrict navigation with
NavigationDeciding, never inject unsanitized input intocallJavaScript, and evaluateserverTrust/ pin perswift-securityfor money-moving flows.
Contents
- WebView — display
- WebPage — the model
- Loading content
- Navigation events
- Deciding navigation policy
- JavaScript bridge
- Custom URL schemes
- Back / forward history
- TLS / serverTrust
- WKWebView fallback (< iOS 26)
- Checklist
- References:
references/wkwebview-fallback.md,references/javascript-bridge.md
WebView — display
import SwiftUI
import WebKit
// 1. Simplest: give it a URL. WebView owns an internal WebPage.
struct SimpleBrowser: View {
var body: some View {
WebView(url: URL(string: "https://www.apple.com"))
}
}
// 2. Drive it with your own WebPage when you need control/observation.
struct ControlledBrowser: View {
@State private var page = WebPage()
var body: some View {
WebView(page)
.navigationTitle(page.title) // observable, updates live
.task { page.load(URLRequest(url: URL(string: "https://www.apple.com")!)) }
}
}
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 · 356 lines · 205 tokens per session scan A c122a66b94b2
swiftui-webkit is a skill published in the GitHub repository TalissonVitorino/kmp-ios-skills (12 stars, last pushed 17d ago), licensed MIT. It adds 205 tokens to every session and 3,912 once invoked, about $0.0010 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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