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 AratKruglik/claude-sdlc --skill rn-conventionsgit clone --depth 1 https://github.com/AratKruglik/claude-sdlcWrote 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/aratkruglik/claude-sdlc/rn-conventions)<a href="https://agentmods.dev/skills/aratkruglik/claude-sdlc/rn-conventions"><img src="https://agentmods.dev/badge/skills/aratkruglik/claude-sdlc/rn-conventions/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/aratkruglik/claude-sdlc/rn-conventions"><img src="https://agentmods.dev/badge/skills/aratkruglik/claude-sdlc/rn-conventions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 105 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 132 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium MCP Rug Pull · line 339 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00155 | $0.02789 |
| Opus 5.5 | $0.00062 | $0.01116 |
| Sonnet 5.5 | $0.00031 | $0.00558 |
| Haiku 4.5 | $0.00015 | $0.00279 |
Grade A, and why
rn-conventions 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 — 354 lines — stays where its author put it; the contents beside it link to each section on GitHub.
React Native Conventions
Workflow detection
| Marker | Workflow |
|---|---|
expo in deps + app.json / app.config.{js,ts} + NO ios/ android/ |
Expo managed |
expo + expo-dev-client in deps |
Expo dev-client (custom native code via prebuild) |
eas.json present |
EAS Build (managed or dev-client built in cloud) |
expo in deps + ios/ + android/ folders |
Expo ejected (treat as bare for native code) |
No expo, ios/ + android/ folders |
Bare RN (React Native CLI) |
Detection precedence: ejected/bare overrides managed if native folders exist.
For new RN projects in 2024+, Expo is the default. Bare projects are typically:
- Legacy projects predating Expo SDK 49.
- Projects with custom native modules that must be in source (rare with config plugins).
- Apps with complex native integrations (CarPlay, Apple Watch, Wear OS).
Project layouts
Expo Router (modern, file-based)
project-root/
├── app.json # OR app.config.{js,ts} for dynamic config
├── package.json
├── tsconfig.json
├── babel.config.js # plugins: ['babel-plugin-module-resolver', etc.]
├── metro.config.js # bundler config (optional)
├── eas.json # if using EAS Build
├── app/ # Expo Router root
│ ├── _layout.tsx # root layout (always)
│ ├── index.tsx # / (home)
│ ├── +not-found.tsx # 404
│ ├── (auth)/ # group (parens hide from URL)
│ │ ├── _layout.tsx # auth stack
│ │ ├── login.tsx
│ │ └── signup.tsx
│ ├── (app)/ # authenticated app group
│ │ ├── _layout.tsx # tabs/drawer
│ │ ├── index.tsx # /
│ │ ├── profile.tsx
│ │ └── [id].tsx # dynamic
│ └── _root.tsx # SafeAreaProvider, theme provider, etc.
├── components/
│ ├── ui/ # Button, Input, Card primitives
│ └── features/
├── hooks/
├── lib/
├── assets/
│ ├── icons/
│ ├── images/
│ └── fonts/
└── __tests__/ # OR colocated *.test.tsx
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 Changed · +2 lines ee140a149afc
- 1mo ago First seen · 352 lines · 155 tokens per session scan A 4e5f47fcc1a3
rn-conventions is a skill published in the GitHub repository AratKruglik/claude-sdlc (49 stars, last pushed today), licensed MIT. It adds 155 tokens to every session and 2,789 once invoked, about $0.0006 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 2026-09-03.
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