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 watchos-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/watchos-code-review)<a href="https://agentmods.dev/skills/existential-birds/beagle/watchos-code-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/watchos-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/watchos-code-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/watchos-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 | $0.00055 | $0.00950 |
| Opus 5.5 | $0.00022 | $0.00380 |
| Sonnet 5.5 | $0.00011 | $0.00190 |
| Haiku 4.5 | $0.00006 | $0.00095 |
Grade A, and why
watchos-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.
Copies of this mod
1 near-identical copy found in the catalogue:
- watchos-code-review — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.
watchOS Code Review
Quick Reference
| Issue Type | Reference |
|---|---|
| App lifecycle, scenes, background modes, extended runtime | references/lifecycle.md |
| ClockKit, WidgetKit, timeline providers, Smart Stack | references/complications.md |
| WCSession, message passing, file transfer, reachability | references/connectivity.md |
| Memory limits, background refresh, battery optimization | references/performance.md |
Review Checklist
- SwiftUI App protocol used with
@WKApplicationDelegateAdaptorfor lifecycle events -
scenePhaseread from root view (not sheets/modals where it's always.active) -
WKExtendedRuntimeSessionstarted only while app is active (not from background) - Workout sessions recovered in
applicationDidFinishLaunching(not just delegate) - Background tasks scheduled at least 5 minutes apart; next scheduled before completing current
-
URLSessionDownloadTask(notDataTask) used for background network requests - WidgetKit used instead of ClockKit for watchOS 9+ complications
- Timeline includes future entries (not just current state); gaps avoided
-
TimelineEntryRelevanceimplemented for Smart Stack prioritization - WCSession delegate set before
activate(); singleton pattern used -
isReachablechecked beforesendMessage;transferUserInfofor critical data - Received files moved synchronously before delegate callback returns
When to Load References
- Reviewing app lifecycle, background modes, or extended sessions -> lifecycle.md
- Reviewing complications, widgets, or timeline providers -> complications.md
- Reviewing WCSession, iPhone-Watch communication -> connectivity.md
- Reviewing memory, battery, or performance issues -> performance.md
Output Format
Report issues using: [FILE:LINE] ISSUE_TITLE
Examples:
[WatchApp.swift:18] WKExtendedRuntimeSession started while app not active[ConnectivityManager.swift:42] WCSession.activate() before delegate assignment[ComplicationTimeline.swift:67] Timeline has no future entries
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 · 67 lines · 55 tokens per session scan A 71b6f6d0d203
watchos-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 55 tokens to every session and 950 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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