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 existential-birds/beagle --skill swiftui-code-reviewgit clone --depth 1 https://github.com/existential-birds/beagleWrote 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/existential-birds/beagle/swiftui-code-review)<a href="https://agentmods.dev/skills/existential-birds/beagle/swiftui-code-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/swiftui-code-review/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/existential-birds/beagle/swiftui-code-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/swiftui-code-review.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 | $0.00047 | $0.00639 |
| Opus 5.5 | $0.00019 | $0.00256 |
| Sonnet 5.5 | $0.00009 | $0.00128 |
| Haiku 4.5 | $0.00005 | $0.00064 |
Grade A, and why
swiftui-code-review 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 1mo 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 — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SwiftUI Code Review
Quick Reference
| Issue Type | Reference |
|---|---|
| View extraction, modifiers, body complexity | references/view-composition.md |
| @State, @Binding, @Observable, @Bindable | references/state-management.md |
| LazyStacks, AnyView, ForEach, identity | references/performance.md |
| VoiceOver, Dynamic Type, labels, traits | references/accessibility.md |
Gates (review workflow)
Complete in order; do not skip ahead.
- Anchor scope — Pass when: every reviewed file is listed as a repo-relative
.swiftpath (or the review explicitly states “none opened / N/A” with reason). - Reference before critique — Pass when: for any non-trivial body, modifier chain, or wrapper-ownership question, you have opened the matching
references/*.mdrow from the table above or you state “not needed” with one line why. - Evidence-bound findings — Pass when: each substantive issue includes
[FILE:LINE](or a bounded line range) before recommendations; symbols/snippets may supplement but not replace the location anchor; no finding that rests only on “typical SwiftUI” without pointing at this code.
Review Checklist
- View body under 10 composed elements (extract subviews)
- Modifiers in correct order (padding before background)
- @StateObject for view-owned objects, @ObservedObject for passed objects
- @Bindable used for two-way bindings to @Observable (iOS 17+)
- LazyVStack/LazyHStack for scrolling lists with 50+ items
- No AnyView (use @ViewBuilder or generics instead)
- ForEach uses stable Identifiable IDs (not array indices)
- All images/icons have accessibilityLabel
- Custom controls have accessibilityAddTraits(.isButton)
- Dynamic Type supported (no fixed font sizes)
- .task modifier for async work (not onAppear + Task)
When to Load References
What ships with it
4 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.
- 1mo ago First seen · 53 lines · 47 tokens per session scan A 35ad0a4bd9d4
swiftui-code-review is a skill published in the GitHub repository existential-birds/beagle (82 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 47 tokens to every session and 639 once invoked, about $0.0002 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 2026-09-16.
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