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 app-intents-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/app-intents-code-review)<a href="https://agentmods.dev/skills/existential-birds/beagle/app-intents-code-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/app-intents-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/app-intents-code-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/app-intents-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 | $0.00048 | $0.00819 |
| Opus 5.5 | $0.00019 | $0.00328 |
| Sonnet 5.5 | $0.00010 | $0.00164 |
| Haiku 4.5 | $0.00005 | $0.00082 |
Grade A, and why
app-intents-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 — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.
App Intents Code Review
Quick Reference
| Issue Type | Reference |
|---|---|
| AppIntent protocol, perform(), return types | references/intent-structure.md |
| AppEntity, EntityQuery, identifiers | references/entities.md |
| AppShortcutsProvider, phrases, discovery | references/shortcuts.md |
| @Parameter, validation, dynamic options | references/parameters.md |
Review Checklist
-
perform()marked with@MainActorif accessing UI/main thread resources -
perform()completes within 30-second timeout (no heavy downloads/processing) - Custom errors conform to
CustomLocalizedStringResourceConvertible -
EntityQuery.entities(for:)handles missing identifiers gracefully -
EntityStringQueryused if Siri voice input needed (not plainEntityQuery) -
suggestedEntities()returns reasonable defaults for disambiguation -
AppShortcutphrases include.applicationNameparameter - Non-optional
@Parameterhas sensible defaults or usesrequestValue() -
@IntentParameterDependencynot used on iOS 16 targets (crashes) - Phrases localized in
AppShortcuts.strings, notLocalizable.strings - App Intents defined in app bundle, not Swift Package (pre-iOS 17)
-
isDiscoverable = falsefor internal/widget-only intents
When to Load References
- AppIntent protocol implementation -> intent-structure.md
- Entity queries, identifiers, Spotlight -> entities.md
- App Shortcuts, phrases, discovery -> shortcuts.md
- Parameter validation, dynamic options -> parameters.md
Review Questions
- Does
perform()handle timeout limits for long-running operations? - Are entity queries self-contained (no
@Dependencyinjection in Siri context)? - Do phrases read naturally and include the app name?
- Are SwiftData models passed by
persistentModelID, not directly? - Would migrating from SiriKit break existing user shortcuts?
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 · 57 lines · 48 tokens per session scan A 0ed5afe7ab5c
app-intents-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 48 tokens to every session and 819 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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