Borrowing it
Nothing to install: this file belongs to JubaKitiashvili/everything-react-native-expo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/JubaKitiashvili/everything-react-native-expo/main/.claude/skills/erne-init/SKILL.mdgit clone --depth 1 https://github.com/JubaKitiashvili/everything-react-native-expoWrote 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/jubakitiashvili/everything-react-native-expo/erne-init)<a href="https://agentmods.dev/skills/jubakitiashvili/everything-react-native-expo/erne-init"><img src="https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/erne-init/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/jubakitiashvili/everything-react-native-expo/erne-init"><img src="https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/erne-init.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 | $0.00099 | $0.00697 |
| Opus 5 | $0.00049 | $0.00349 |
| Sonnet 5 | $0.00020 | $0.00139 |
| Haiku 4.5 | $0.00010 | $0.00070 |
Grade A, and why
erne-init 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 11d 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 — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Initialize ERNE
ERNE is an AI agent harness for React Native and Expo. Setting it up involves choosing a few preferences and then running a single CLI command. The reason you need to ask the user before running is that the CLI's interactive prompts don't work reliably in Claude Code — so you handle the interaction here in conversation instead.
Step 1: Ask preferences
Before running anything, ask the user two things in a single message:
Profile: ERNE uses hook profiles to control how much code quality checking happens automatically. Ask which one they'd like:
- minimal — Almost no automated checks. Good for quick prototyping or when you just want the agents without guardrails.
- standard — Catches common issues (formatting, console.logs, platform-specific bugs) without slowing things down. This is what most people pick.
- strict — Adds security scanning, accessibility checks, and test gates. Good for production apps or teams.
MCP servers: ERNE can configure agent-device (controls iOS Simulator and Android Emulator for screenshots, taps, navigation) and GitHub integration. Ask if they want these set up now or later.
Wait for the user to respond before continuing.
Step 2: Run the init command
Once you have their preferences, run this in Bash:
npx erne-universal@latest init --yes --profile <profile> [--no-mcp]
Replace <profile> with their choice (minimal, standard, or strict). Add --no-mcp only if they said no to MCP servers.
The --yes flag is important — it tells the CLI to skip its own interactive prompts since you already gathered the preferences.
Step 3: Launch the dashboard
After init completes, start the dashboard:
npx erne-universal dashboard &
The dashboard runs in the background. Read the output to find which port it started on (usually 3333, but it auto-selects a free port if 3333 is taken).
If the dashboard needs to install dependencies on first run (takes about 2 minutes), tell the user it's installing and will open in the browser when ready.
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.
- 11d ago First seen · 59 lines · 99 tokens per session scan A 2c74dc48a107
erne-init is a skill published in the GitHub repository JubaKitiashvili/everything-react-native-expo (45 stars, last pushed 5mo ago), licensed MIT. It adds 99 tokens to every session and 697 once invoked, about $0.0005 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 2026-08-30.
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