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

.claude/skills/feature/SKILL.md

feature is a skill for Claude Code from JubaKitiashvili/everything-react-native-expo. It costs 12 tokens per session (342 once invoked), scanned A, a copy of erne-feature, MIT.

A focused implementation workflow for building one React Native feature unit at a time, such as a screen, custom hook, API module, or reusable component. It uses a feature-builder agent and accounts for loading, error, empty, and success states.

In plain words
What is it for?
Use it for isolated screens, hooks, components, or API modules, especially when several developers or agents are working on a larger feature.
Why use it?
It keeps a task small enough to implement and review clearly, while checking its types, dependencies, edge cases, and integration point. It can also divide work alongside a larger coding agent.

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/feature/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 feature

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/jubakitiashvili/everything-react-native-expo/feature"><img src="https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/feature.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 342 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 88% copy Near-identical to another mod 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 $0.00012 $0.00342
Opus 5 $0.00006 $0.00171
Sonnet 5 $0.00002 $0.00068
Haiku 4.5 $0.00001 $0.00034

Measured 10d ago against content hash bd0b4bf00fb4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

feature 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 10d 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

This is a copy

88% identical to erne-feature — 16 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/feature/SKILL.md · 38 lines

What it actually says

/feature — Focused Feature Unit

You are executing the /feature command. Use the feature-builder agent to implement a discrete, scoped feature unit.

Process

  1. Scope the unit — Identify exactly one deliverable: a single screen, a custom hook, an API module, or a reusable component
  2. Check dependencies — Verify types, API contracts, and shared state are defined before starting
  3. Implement — Using the feature-builder agent's process:
    • Write the code with all states handled (loading, error, empty, success)
    • Type everything explicitly (return types, param interfaces, no any)
    • Handle edges (null checks, empty arrays, network failures, platform differences)
  4. Deliver — Complete file with props/params interface, dependencies list, and integration point

When to Use

  • Building a single screen, hook, or component in isolation
  • Working in parallel with another agent on a larger feature
  • Quick, scoped implementation tasks with clear boundaries

Parallel Work

When used alongside /code (senior-developer):

  • /code handles: data layer, stores, navigation skeleton, complex multi-screen flows
  • /feature handles: individual screens, isolated components, utility hooks, API wrappers
  • Coordinate via shared type definitions and agreed interfaces

Notes

  • Reference the active platform rules layer for conventions
  • Keep scope tight — if the task touches more than 3 files, use /code instead
  • Every delivered unit must include its integration point documentation
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. 10d ago First seen · 38 lines · 12 tokens per session scan A bd0b4bf00fb4

Subscribe to this mod's changes

feature is a skill published in the GitHub repository JubaKitiashvili/everything-react-native-expo (45 stars, last pushed 5mo ago), licensed MIT. It adds 12 tokens to every session and 342 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to erne-feature, differing in 16 lines, and is treated as a copy.

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