rn-code-analysis

rn-code-analysis is a skill for Claude Code, Codex from cmaranho/rn-agent-skills. It costs 57 tokens per session (457 once invoked), scanned A, original, MIT.

A React Native code-analysis guide explains how to inspect an app’s code for bugs, design problems, security risks, and performance issues. Code smells are patterns that often make code harder to maintain or more error-prone.

In plain words
What is it for?
It is for auditing React Native projects, running lint and type checks, finding duplication or fragile types, and prioritising technical debt without changing behavior.
Why use it?
It helps turn a broad code review into evidence-based findings ranked by likely impact and effort.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/cmaranho/rn-agent-skills/rn-code-analysis
Any agent
npx skills add cmaranho/rn-agent-skills --skill rn-code-analysis
Clone the repo
git clone --depth 1 https://github.com/cmaranho/rn-agent-skills

Made for: Claude Code, Codex.

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-code-analysis

README.md
[![agentmods](https://agentmods.dev/badge/skills/cmaranho/rn-agent-skills/rn-code-analysis.svg)](https://agentmods.dev/skills/cmaranho/rn-agent-skills/rn-code-analysis)
Your own site
<a href="https://agentmods.dev/skills/cmaranho/rn-agent-skills/rn-code-analysis"><img src="https://agentmods.dev/badge/skills/cmaranho/rn-agent-skills/rn-code-analysis.svg" alt="Measured on agentmods" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 457 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00057 $0.00457
Opus 5 $0.00028 $0.00229
Sonnet 5 $0.00011 $0.00091
Haiku 4.5 $0.00006 $0.00046

Measured 5d ago against content hash f2ba17e0248a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rn-code-analysis 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 5d 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.

skills/rn-code-analysis/SKILL.md · 52 lines

What it actually says

React Native — Análise de Código

Objetivo

Mapear problemas de qualidade, risco e aderência a padrões, priorizados por impacto.

Quando utilizar

  • Auditar uma base ou módulo.
  • Preparar/embasar um code review aprofundado.
  • Priorizar dívida técnica e riscos.

Conhecimentos necessários

  • Linters/analisadores estáticos (ex.: ESLint, tsc, ferramentas de complexidade).
  • Code smells e métricas (complexidade ciclomática, acoplamento, duplicação).
  • Padrões arquiteturais do projeto e limites de camada.
  • Vetores de risco (segurança, performance, acessibilidade).

Fluxo de execução

  1. Rode análise estática (lint, typecheck) e colete métricas.
  2. Mapeie a arquitetura real vs a esperada; identifique violações de camada.
  3. Detecte smells: duplicação, funções longas, any, acoplamento, dead code.
  4. Sinalize riscos de performance, segurança e acessibilidade.
  5. Priorize por impacto × esforço e proponha ações objetivas.

Boas práticas

  • Baseie achados em evidência (arquivo/linha/métrica).
  • Separe crítico de sugestão; foque no que muda o resultado.
  • Prefira automação (regra de lint) a checagem manual recorrente.
  • Não altere comportamento durante a análise.

Armadilhas comuns

  • Nitpicks estilísticos ofuscando problemas reais.
  • Achados sem prioridade nem impacto.
  • Ignorar contexto/histórico do código.
  • Confundir "diferente do meu gosto" com "defeito".

Critérios de sucesso

  • Lista priorizada e acionável de achados, com evidência.
  • Riscos críticos identificados.
  • Recomendações executáveis e, quando possível, automatizáveis.
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. 5d ago First seen · 52 lines · 57 tokens per session scan A f2ba17e0248a

Subscribe to this mod's changes

rn-code-analysis is a skill published in the GitHub repository cmaranho/rn-agent-skills (2 stars, last pushed 2mo ago), licensed MIT. It adds 57 tokens to every session and 457 once invoked, about $0.0003 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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