review-ios

review-ios is a skill for Claude Code from existential-birds/beagle. It costs 16 tokens per session (2,484 once invoked), scanned A, original, Apache-2.0.

A review guide for iOS and SwiftUI code, where SwiftUI is Apple's system for building app screens from Swift code. It can review the target Swift files, run style checks when configured, and apply verification steps before reporting issues.

In plain words
What is it for?
Use it for broad reviews of an iOS app's Swift files, including projects that use SwiftUI and optional parallel review agents.
Why use it?
It gives a structured review process that limits unsupported findings and checks both general Swift code and SwiftUI-related concerns.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: mentions subagents.

Part of the beagle-ios plugin — 15 skills shipped together

Good fit Use it for broad reviews of an iOS app's Swift files, including projects that use SwiftUI and optional parallel review agents.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/existential-birds/beagle/review-ios
Install

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.

Any agent
npx skills add existential-birds/beagle --skill review-ios
Clone the repo
git clone --depth 1 https://github.com/existential-birds/beagle

Made for: Claude Code.

Or install beagle-ios, the plugin that ships this one along with the rest of its 15 skills.

Wrote 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.

agentmods badge for review-ios

README.md
[![agentmods](https://agentmods.dev/badge/skills/existential-birds/beagle/review-ios/github.svg)](https://agentmods.dev/skills/existential-birds/beagle/review-ios)
Your own site
<a href="https://agentmods.dev/skills/existential-birds/beagle/review-ios"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/review-ios/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.

agentmods 80×15 button for review-ios

Your own site · 80×15
<a href="https://agentmods.dev/skills/existential-birds/beagle/review-ios"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/review-ios.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,484 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00016 $0.02484
Opus 5.5 $0.00006 $0.00994
Sonnet 5.5 $0.00003 $0.00497
Haiku 4.5 $0.00002 $0.00248

Measured 1mo ago against content hash 620c03f9841c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

review-ios 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.

plugins/beagle-ios/skills/review-ios/SKILL.md · 258 lines

How it starts

The opening of the file, as written. The whole thing — 258 lines — stays where its author put it; the contents beside it link to each section on GitHub.

iOS Code Review

Arguments

  • --parallel: If the agent supports subagents, dispatch one specialized subagent per technology area
  • Path: Target directory (default: current working directory)

Hard gates

Complete in order before writing Issues in the output (empty scope is allowed; fabricated findings are not).

  1. Scope gate: You have an explicit list of .swift paths under review (from Step 1 or a user-provided path). Pass: List captured in working notes or one line: No Swift files in scope — then stop with no Issues.
  2. Linter gate (style): Step 2 commands ran for this tree; if no .swiftlint.yml / .swiftlint.yaml, note that in one line. Pass: You do not report a style issue that SwiftLint would already enforce for that line when config exists and swiftlint succeeds.
  3. Protocol gate: review-verification-protocol is loaded before Step 6. Pass: If you report any Issues, at least one finding was checked against that checklist (name the item in Review Summary or on that Issue); if you report zero Issues, state Protocol applied; no issues in Review Summary.
  4. Evidence gate (Critical/Major): For each Critical or Major item, you re-read the file at FILE:LINE (full surrounding context, not only the diff hunk). Pass: The Issue text matches observable code at that location.

Do not begin Step 6 until Gates 1–3 are satisfied (skills load order stays Steps 4–5).

Step 1: Identify Changed Files

git diff --name-only $(git merge-base HEAD main)..HEAD | grep -E '\.swift$'

Step 2: Verify Linter Status

CRITICAL: Run SwiftLint BEFORE flagging any style issues.

# Check if SwiftLint config exists and run it
if [ -f ".swiftlint.yml" ] || [ -f ".swiftlint.yaml" ]; then
    swiftlint lint --quiet <changed_files>
fi

Rules:

  • If SwiftLint passes for a specific rule, DO NOT flag that issue manually
  • SwiftLint configuration is authoritative for style rules
  • Only flag issues that linters cannot detect (semantic issues, architectural problems)

Read the full file on GitHub · 258 lines

Changes

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.

  1. 1mo ago First seen · 258 lines · 16 tokens per session scan A 620c03f9841c

Subscribe to this mod's changes

review-ios is a skill published in the GitHub repository existential-birds/beagle (82 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 16 tokens to every session and 2,484 once invoked, about $0.0001 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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