What is frontend-dev-guidelines?

A set of conventions for building React and TypeScript user interfaces. React is a library for assembling interfaces from reusable components, while TypeScript adds checked types to JavaScript.

Use it when creating components, pages, and features, fetching data, setting up routes, styling with MUI, or improving frontend performance.

It helps keep frontend code organized and makes common choices about loading data, routing, styling, performance, and types more consistent.

frontend-dev-guidelines — Skill by duongductrong/cursor-kit

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/duongductrong/cursor-kit

agentmods

npx agentmods add skills/duongductrong/cursor-kit/frontend-development

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/duongductrong/cursor-kit/frontend-development/github.svg)](https://agentmods.dev/skills/duongductrong/cursor-kit/frontend-development)

Your own site

<a href="https://agentmods.dev/skills/duongductrong/cursor-kit/frontend-development"><img src="https://agentmods.dev/badge/skills/duongductrong/cursor-kit/frontend-development/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/duongductrong/cursor-kit/frontend-development"><img src="https://agentmods.dev/badge/skills/duongductrong/cursor-kit/frontend-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,747 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 95% 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.

Model	Per session	Once invoked
Fable 5.1	$0.00076	$0.02747
Opus 5.5	$0.00030	$0.01099
Sonnet 5.5	$0.00015	$0.00549
Haiku 4.5	$0.00008	$0.00275

Measured 1mo ago against content hash 55701b6d1e94, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

frontend-dev-guidelines 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 1mo 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

95% identical to frontend-dev-guidelines — 3 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.

templates/skills/frontend-development/SKILL.md · 400 lines

How it starts

The opening of the file, as written. The whole thing — 400 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Frontend Development Guidelines

Purpose

Comprehensive guide for modern React development, emphasizing Suspense-based data fetching, lazy loading, proper file organization, and performance optimization.

When to Use This Skill

Creating new components or pages
Building new features
Fetching data with TanStack Query
Setting up routing with TanStack Router
Styling components with MUI v7
Performance optimization
Organizing frontend code
TypeScript best practices

Quick Start

New Component Checklist

Creating a component? Follow this checklist:

Use React.FC<Props> pattern with TypeScript
Lazy load if heavy component: React.lazy(() => import())
Wrap in <SuspenseLoader> for loading states
Use useSuspenseQuery for data fetching
Import aliases: @/, ~types, ~components, ~features
Styles: Inline if <100 lines, separate file if >100 lines
Use useCallback for event handlers passed to children
Default export at bottom
No early returns with loading spinners
Use useMuiSnackbar for user notifications

New Feature Checklist

Creating a feature? Set up this structure:

Create features/{feature-name}/ directory
Create subdirectories: api/, components/, hooks/, helpers/, types/
Create API service file: api/{feature}Api.ts
Set up TypeScript types in types/
Create route in routes/{feature-name}/index.tsx
Lazy load feature components
Use Suspense boundaries
Export public API from feature index.ts

Import Aliases Quick Reference

Alias	Resolves To	Example
`@/`	`src/`	`import { apiClient } from '@/lib/apiClient'`
`~types`	`src/types`	`import type { User } from '~types/user'`
`~components`	`src/components`	`import { SuspenseLoader } from '~components/SuspenseLoader'`
`~features`	`src/features`	`import { authApi } from '~features/auth'`

Read the full file on GitHub · 400 lines

Files

What ships with it

10 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.

1mo ago First seen · 400 lines · 76 tokens per session scan A 55701b6d1e94

Subscribe to this mod's changes

frontend-dev-guidelines is a skill published in the GitHub repository duongductrong/cursor-kit (23 stars, last pushed 7mo ago), licensed MIT. It adds 76 tokens to every session and 2,747 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 95% identical to frontend-dev-guidelines, differing in 3 lines, and is treated as a copy.

Frontend React cursor cursor-kit github-copilot

clean-architecture-react

Use when laying out or extending a React / TypeScript front end — which folder a screen, component, hook, use case or API call belongs in, which folder may import which, and how a component reaches the API. Not for build, dependency, environment-variable or tooling configuration.

SebastienDegodez/skraft-plugin · 62 tokens

frontend-dev-guidelines