ledger-live: Skill for Claude Code

.agents/skills/react-general/SKILL.md

react-general is a skill for Claude Code, Codex from LedgerHQ/ledger-live. It costs 26 tokens per session (885 once invoked), scanned A, original, MIT.

A set of general rules for building and reviewing React and React Native code, including components, state, styling, performance, and navigation.

In plain words
What is it for?
Use it when writing or reviewing TypeScript React files, choosing state management, composing components, styling desktop or mobile screens, and handling navigation.
Why use it?
It gives consistent ways to structure user interfaces and avoid unnecessary re-renders, unclear state ownership, and platform-specific mistakes.

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 LedgerHQ/ledger-live's own configuration. It tells Claude Code and Codex how to work on ledger-live 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 ledger-live configures →

Reuse

Borrowing it

Nothing to install: this file belongs to LedgerHQ/ledger-live. 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/LedgerHQ/ledger-live/develop/.agents/skills/react-general/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/LedgerHQ/ledger-live

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 react-general

README.md
[![agentmods](https://agentmods.dev/badge/skills/ledgerhq/ledger-live/react-general/github.svg)](https://agentmods.dev/skills/ledgerhq/ledger-live/react-general)
Your own site
<a href="https://agentmods.dev/skills/ledgerhq/ledger-live/react-general"><img src="https://agentmods.dev/badge/skills/ledgerhq/ledger-live/react-general/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 react-general

Your own site · 80×15
<a href="https://agentmods.dev/skills/ledgerhq/ledger-live/react-general"><img src="https://agentmods.dev/badge/skills/ledgerhq/ledger-live/react-general.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 885 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

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 →

  • high Memory Poisoning · line 41
    Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.
    Fix: Protect agent memory and state from modification by untrusted content. Use read-only memory for critical instructions and validate all state changes.
How audits are shown
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 $0.00026 $0.00885
Opus 5.5 $0.00010 $0.00354
Sonnet 5.5 $0.00005 $0.00177
Haiku 4.5 $0.00003 $0.00089

Measured today against content hash 24b1362d1008, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

react-general 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.

.agents/skills/react-general/SKILL.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

General React & React Native Patterns

These rules apply to all files, including those inside src/mvvm/. See mvvm-architecture for MVVM-specific structure.

Component Architecture

  • Prefer functional components.
  • Keep components focused and reasonably sized.
  • Decompose large UI into smaller reusable elements.
  • Use composition for extensibility.

State Management

  • Prioritize local state for UI-only concerns.
  • Use RTK Query (with slices) only when necessary for app-wide state. See domain-data.
  • Apply optimized selectors to limit re-rendering.
  • Connect Redux at the lowest component level when possible.

Styling

  • Mobile: use Lumen UI React Native — see ldls-native.
  • Desktop: use Lumen UI React — see ldls-web.
  • All styles must support theme switching (dark/light mode).

Performance

  • Memoize expensive operations with useMemo.
  • Stabilize callbacks with useCallback.
  • Wrap costly components in React.memo.
  • Apply list virtualization where needed.
  • Use lazy loading for large screens or modules.
  • Mobile: use React Navigation; ensure correct deep-link support; keep navigation types strict.
  • Desktop: use React Router; implement route guards when necessary; maintain clear history logic.

Data Fetching

  • Use RTK Query hooks from a domain/api package. See domain-data.
  • Use consistent loading, retry, and error states.
  • Prefer optimistic UI when appropriate.
  • Apply caching and stale-time strategies.

Accessibility

  • Mobile: provide accessible labels for all interactive elements; support screen reader flows; ensure proper focus transitions.
  • Desktop: use semantic HTML tags; implement full keyboard navigation; apply meaningful ARIA attributes when required.

Error Boundaries

  • Wrap critical areas in error boundaries.
  • Report errors to monitoring services.
  • Provide clean, user-friendly fallback UIs.

Read the full file on GitHub · 79 lines

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 24b1362d1008
  2. yesterday Changed · +2 lines 3bbde0ca77b6
  3. 2mo ago First seen · 77 lines · 26 tokens per session scan A 50e9a1c987eb

Subscribe to this mod's changes

react-general is a skill published in the GitHub repository LedgerHQ/ledger-live (624 stars, last pushed yesterday), licensed MIT. It adds 26 tokens to every session and 885 once invoked, about $0.0001 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 2026-08-30.

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