platform: Skill for Claude Code

.agents/skills/vercel-react-native-skills/SKILL.md

vercel-react-native-skills is a skill for Claude Code, Codex from tutur3u/platform. It costs 24 tokens per session (1,015 once invoked), scanned A, a copy of vercel-react-native-skills, Apache-2.0.

A set of React Native and Expo guidelines for building mobile apps, including advice on lists, animations, navigation, rendering, and project structure.

In plain words
What is it for?
Use it when building React Native or Expo screens, improving large scrolling lists, adding animations, using native modules, or organizing a monorepo, which is one repository containing multiple related projects.
Why use it?
It helps agents make informed implementation choices for mobile interfaces and avoid common performance or configuration problems.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is tutur3u/platform's own configuration. It tells Claude Code and Codex how to work on platform 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 platform configures →

Reuse

Borrowing it

Nothing to install: this file belongs to tutur3u/platform. 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/tutur3u/platform/main/.agents/skills/vercel-react-native-skills/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/tutur3u/platform

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 vercel-react-native-skills

README.md
[![agentmods](https://agentmods.dev/badge/skills/tutur3u/platform/vercel-react-native-skills.svg)](https://agentmods.dev/skills/tutur3u/platform/vercel-react-native-skills)
Your own site
<a href="https://agentmods.dev/skills/tutur3u/platform/vercel-react-native-skills"><img src="https://agentmods.dev/badge/skills/tutur3u/platform/vercel-react-native-skills.svg" alt="Measured on agentmods" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,015 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 100% 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 $0.00024 $0.01015
Opus 5 $0.00012 $0.00508
Sonnet 5 $0.00005 $0.00203
Haiku 4.5 $0.00002 $0.00102

Measured today against content hash 96505c35c543, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

vercel-react-native-skills 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 today.

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

100% identical to vercel-react-native-skills — 0 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.

.agents/skills/vercel-react-native-skills/SKILL.md · 118 lines

How it starts

The opening of the file, as written. The whole thing — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.

React Native Skills

Comprehensive best practices for React Native and Expo applications. Contains rules across multiple categories covering performance, animations, UI patterns, and platform-specific optimizations.

When to Apply

Reference these guidelines when:

  • Building React Native or Expo apps
  • Optimizing list and scroll performance
  • Implementing animations with Reanimated
  • Working with images and media
  • Configuring native modules or fonts
  • Structuring monorepo projects with native dependencies

Rule Categories by Priority

Priority Category Impact Prefix
1 List Performance CRITICAL list-performance-
2 Animation HIGH animation-
3 Navigation HIGH navigation-
4 UI Patterns HIGH ui-
5 State Management MEDIUM react-state-
6 Rendering MEDIUM rendering-
7 Monorepo MEDIUM monorepo-
8 Configuration LOW fonts-, imports-

Quick Reference

1. List Performance (CRITICAL)

  • list-performance-virtualize - Use FlashList for large lists
  • list-performance-item-memo - Memoize list item components
  • list-performance-callbacks - Stabilize callback references
  • list-performance-inline-objects - Avoid inline style objects
  • list-performance-function-references - Extract functions outside render
  • list-performance-images - Optimize images in lists
  • list-performance-item-expensive - Move expensive work outside items
  • list-performance-item-types - Use item types for heterogeneous lists

2. Animation (HIGH)

  • animation-gpu-properties - Animate only transform and opacity
  • animation-derived-value - Use useDerivedValue for computed animations
  • animation-gesture-detector-press - Use Gesture.Tap instead of Pressable

Read the full file on GitHub · 118 lines

Files

What ships with it

38 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. today Changed · -4 lines · -33 tokens per session 96505c35c543
  2. 7d ago First seen · 122 lines · 57 tokens per session scan A 4012750a5ccb

Subscribe to this mod's changes

vercel-react-native-skills is a skill published in the GitHub repository tutur3u/platform (53 stars, last pushed today), licensed Apache-2.0. It adds 24 tokens to every session and 1,015 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to vercel-react-native-skills, differing in 0 lines, and is treated as a copy.

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