everything-react-native-expo: Skill for Claude Code

.claude/skills/erne-plan/SKILL.md

erne-plan is a skill for Claude Code from JubaKitiashvili/everything-react-native-expo. It costs 13 tokens per session (338 once invoked), scanned A, original, MIT.

A planning workflow for designing feature architecture in Expo and React Native projects. It breaks a feature into screens and components, then maps its files, navigation, state, data flow, and implementation tasks.

In plain words
What is it for?
Use it to plan new mobile features, screens, routes, API integrations, state stores, and deep links before implementation.
Why use it?
It turns a broad feature request into a concrete plan before code is written. This helps reveal missing decisions about navigation, state management, APIs, caching, and platform differences.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is JubaKitiashvili/everything-react-native-expo's own configuration. It tells Claude Code how to work on everything-react-native-expo itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything everything-react-native-expo configures →

Part of the erne-universal plugin — 45 skills, 12 agents shipped together

Reuse

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.

Copy the file
curl -O https://raw.githubusercontent.com/JubaKitiashvili/everything-react-native-expo/main/.claude/skills/erne-plan/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/JubaKitiashvili/everything-react-native-expo

Made for: Claude Code.

Or install erne-universal, the plugin that ships this one along with the rest of its 45 skills, 12 agents.

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 erne-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/erne-plan/github.svg)](https://agentmods.dev/skills/jubakitiashvili/everything-react-native-expo/erne-plan)
Your own site
<a href="https://agentmods.dev/skills/jubakitiashvili/everything-react-native-expo/erne-plan"><img src="https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/erne-plan/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 erne-plan

Your own site · 80×15
<a href="https://agentmods.dev/skills/jubakitiashvili/everything-react-native-expo/erne-plan"><img src="https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/erne-plan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 338 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 $0.00013 $0.00338
Opus 5 $0.00006 $0.00169
Sonnet 5 $0.00003 $0.00068
Haiku 4.5 $0.00001 $0.00034

Measured 11d ago against content hash 486893738ba0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

erne-plan 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • plan — 89% identical, 8 lines differ
.claude/skills/erne-plan/SKILL.md · 50 lines

What it actually says

/erne-plan — Feature Architecture Design

You are executing the /erne-plan command. Use the architect agent to design a feature architecture.

Process

  1. Understand the requirement — Ask clarifying questions if the feature description is vague
  2. Analyze existing codebase — Read relevant files, understand current navigation structure, state management, and API patterns
  3. Design the architecture — Using the architect agent's process:
    • Decompose into components and screens
    • Plan Expo Router file structure
    • Select state management approach (Zustand / TanStack Query / local)
    • Design data flow and API layer
    • Consider platform-specific requirements
  4. Output the plan — Use the architect agent's output format:

Architecture Output

## Overview
[1-2 sentence description of the feature]

## File Structure
[New files to create with paths]

## Component Design
[Component hierarchy and responsibilities]

## Data Flow
[State management approach, API calls, caching strategy]

## Navigation
[New routes, layout changes, deep link support]

## Implementation Tasks
[Ordered list of implementation steps]
  1. Review with user — Present the plan and ask for approval before implementation

Notes

  • Reference the active platform rules layer (rules/expo/patterns.md or rules/bare-rn/patterns.md) for conventions
  • Consider whether this is Expo managed, bare RN, or has native modules
  • Include test strategy in the plan
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. 11d ago First seen · 50 lines · 13 tokens per session scan A 486893738ba0

Subscribe to this mod's changes

erne-plan is a skill published in the GitHub repository JubaKitiashvili/everything-react-native-expo (45 stars, last pushed 5mo ago), licensed MIT. It adds 13 tokens to every session and 338 once invoked, about $0.0001 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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