react

A command that applies React and TypeScript coding practices to components, hooks, state, events, and properties. React is a library for building user interfaces.

In plain words
What is it for?
Creating React components and custom hooks, managing typed state, handling events, and designing typed component properties.
Why use it?
It helps keep React code's inputs, events, reusable logic, and state correctly typed and consistently structured.

Command for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/usrrname/cursorrules/react
Clone the repo
git clone --depth 1 https://github.com/usrrname/cursorrules

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 320 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00320
Opus 5 $0.00000 $0.00160
Sonnet 5 $0.00000 $0.00064
Haiku 4.5 $0.00000 $0.00032

Measured yesterday against content hash 83ff1e4fc4fa, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

react 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 yesterday.

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.

.claude/commands/react.md · 77 lines

What it actually says

/react

Apply React with TypeScript best practices.

Usage

/react [component-or-hook]

When to Invoke

Use this command when:

  • Creating React components
  • Building custom hooks
  • Managing React state
  • Handling events with TypeScript

Standards Applied

Component Patterns

  • FC type or explicit function types
  • Props interfaces with readonly
  • Proper children typing
  • Event handler types

Hooks

  • useState with generics
  • useReducer typed actions
  • useRef for elements/values
  • Custom hooks with full signatures

Props Design

  • Optional props with ?
  • Discriminated unions for variants
  • ComponentProps for wrappers
  • forwardRef typing

Examples

Input

function Button({ onClick, children }) {
  return <button onClick={onClick}>{children}</button>;
}

Output

interface ButtonProps {
  readonly variant: 'primary' | 'secondary';
  readonly children: React.ReactNode;
  readonly onClick?: () => void;
}

export const Button: React.FC<ButtonProps> = ({
  variant,
  children,
  onClick
}) => {
  return (
    <button className={variant} onClick={onClick}>
      {children}
    </button>
  );
};

Agent

Uses BasicBitch with Spellchuck for documentation.

  • /typescript - TypeScript fundamentals
  • /nextjs - Next.js React patterns
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. yesterday First seen · 77 lines · 0 tokens per session scan A 83ff1e4fc4fa

Subscribe to this mod's changes

react is a command published in the GitHub repository usrrname/cursorrules (10 stars, last pushed 4mo ago), licensed ISC. It costs nothing until one of its globs matches a file; then it loads 320 tokens. 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 2026-08-31.