rn-audit

rn-audit is a skill for Claude Code from AndrewDongminYoo/rn-agents-kit. It costs 45 tokens per session (1,208 once invoked), scanned A, original, Apache-2.0.

A read-only code-quality audit for React Native and Expo projects, which are tools for building mobile apps with JavaScript or TypeScript. It examines performance, hooks, lists, native code boundaries, and effect cleanup, then verifies reported problems.

In plain words
What is it for?
Auditing a React Native codebase or code change, checking rendering performance, verifying hook usage, reviewing long lists, inspecting JavaScript-to-native boundaries, and finding effects that may leak work or resources.
Why use it?
It helps separate real issues from plausible but incorrect warnings during a broad code review. The result focuses attention on findings that survive an independent challenge.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the rn-agents-kit plugin — 10 skills shipped together

Good fit Auditing a React Native codebase or code change, checking rendering performance, verifying hook usage, reviewing long lists, inspecting JavaScript-to-native boundaries, and finding effects that may leak work or resources.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/andrewdongminyoo/rn-agents-kit/rn-audit
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 AndrewDongminYoo/rn-agents-kit --skill rn-audit
Clone the repo
git clone --depth 1 https://github.com/AndrewDongminYoo/rn-agents-kit

Made for: Claude Code.

Or install rn-agents-kit, the plugin that ships this one along with the rest of its 10 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 rn-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/andrewdongminyoo/rn-agents-kit/rn-audit/github.svg)](https://agentmods.dev/skills/andrewdongminyoo/rn-agents-kit/rn-audit)
Your own site
<a href="https://agentmods.dev/skills/andrewdongminyoo/rn-agents-kit/rn-audit"><img src="https://agentmods.dev/badge/skills/andrewdongminyoo/rn-agents-kit/rn-audit/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 rn-audit

Your own site · 80×15
<a href="https://agentmods.dev/skills/andrewdongminyoo/rn-agents-kit/rn-audit"><img src="https://agentmods.dev/badge/skills/andrewdongminyoo/rn-agents-kit/rn-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,208 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 $0.00045 $0.01208
Opus 5 $0.00023 $0.00604
Sonnet 5 $0.00009 $0.00242
Haiku 4.5 $0.00005 $0.00121

Measured 4d ago against content hash 6557bb4b7990, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

rn-audit 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 4d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (rn-audit.js), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/rn-audit/SKILL.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

RN Code Audit

Overview

This skill reviews a React Native or Expo target for concrete code-quality defects. It separates discovery from verification so a plausible concern does not become a finding without a second reading of the relevant code. The audit does not modify source files.

When to Use

  • "audit this React Native app or feature"
  • "review this React Native diff before merge"
  • "look for hook, rendering, list, native-boundary, or effect problems"
  • "give me a code-quality report with reproducible evidence"

Prerequisites

  • Identify one target: an app root, a directory, a file, or diff.
  • For diff, set BASE_REF to the pull request base ref, or main when no pull request exists.
  • Use the repository's tracked source and configuration files as default evidence.
  • When the target is a named file or feature directory, include untracked source inside that target.
  • For an app-root or diff audit, list untracked source with git ls-files --others --exclude-standard. Report untracked source as a coverage gap unless a named file or feature directory includes it.
  • Exclude generated and vendored paths from discovery by default. Review an intentionally maintained generated file only when the target explicitly names it.
  • Use collaboration tools only when the active runtime exposes them.

Quick Steps

  1. Inspect the target, project layout, React Native or Expo version, and enabled architecture before selecting review lenses.
    • Include untracked source when a named file or feature directory contains it.
    • For an app-root or diff audit, list untracked source with git ls-files --others --exclude-standard. Report it as a coverage gap unless a named file or feature directory includes it.
  2. For a diff target, set MERGE_BASE=$(git merge-base "$BASE_REF" HEAD). Inspect git diff --name-status --find-renames "$BASE_REF"...HEAD and the complete patch before selecting lenses.
    • Read a deleted preimage with git show "$MERGE_BASE:$OLD_PATH".
    • Read both blobs for a renamed path with git show "$MERGE_BASE:$OLD_PATH" and git show "HEAD:$NEW_PATH".
  3. Select up to five distinct lenses that match the target, such as render cost, hook correctness, list virtualization, native boundaries, or effect cleanup.
  4. For each proposed finding, read the cited code and the closest relevant context.
  5. Have an independent reviewer challenge each finding when the runtime supports independent review.
  6. When independent review is unavailable, perform a separate sequential challenge pass and label the report [PARTIAL].
  7. Report only verified findings with file locations, evidence, severity, and a concrete next step.

Read the full file on GitHub · 107 lines

Files

What ships with it

1 file 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.

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. 4d ago Changed · +34 lines · -48 tokens per session 6557bb4b7990
  2. 9d ago First seen · 73 lines · 93 tokens per session scan A 59b32f423ed5

Subscribe to this mod's changes

rn-audit is a skill published in the GitHub repository AndrewDongminYoo/rn-agents-kit (2 stars, last pushed 5d ago), licensed Apache-2.0. It adds 45 tokens to every session and 1,208 once invoked, about $0.0002 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 2026-08-31.

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