Next.js AI Coding Rules

Browse curated Next.js rules for Claude Code, Cursor and more. 9 rules available.

Vercel Next.js CLAUDE.md

Next.jsモノレポ（13.8万スター）の公式CLAUDE.md。ビルドコマンド、watchモード高速開発、テストモード、PRトリアージ、主要エントリポイントを網羅。

# Next.js Development Guide

> **Note:** `CLAUDE.md` is a symlink to `AGENTS.md`. They are the same file.

## Codebase structure

### Monorepo Overview

This is a pnpm monorepo containing the Next.js framework and related packages.

```
next.js/
├── packages/           # Published npm packages
├── t...

vercel/next.js138,000

CLAUDE.mdNext.js

TypeScript

Cal.com — Do/Don'tフォーマット

Cal.comのクリーンなDo/Don'tスタイルAGENTS.md。Prismaベストプラクティス、TypeScript厳密ルール、エラー処理、PR規模ガイドラインを網羅。

# Cal.com Development Guide for AI Agents

You are a senior Cal.com engineer working in a Yarn/Turbo monorepo. You prioritize type safety, security, and small, reviewable diffs.

## Do

- Use `select` instead of `include` in Prisma queries for performance and security
- Use `import type { X }` for T...

calcom/cal.com40,200

AGENTS.mdNext.js

TypeScript

Langfuse — CLAUDE.md

LangfuseオープンソースLLM観測プラットフォームのCLAUDE.md。トレーシング、プロンプト管理、評価、データセットのガイド。

# Langfuse — CLAUDE.md

## Overview

Langfuse is an open-source LLM engineering platform. Features:
- **Tracing**: Full observability of LLM calls, chains, agents.
- **Prompt Management**: Version-controlled prompts with A/B testing.
- **Evaluations**: Human annotation + LLM-as-judge + automated eva...

langfuse/langfuse8,900

CLAUDE.mdNext.js

TypeScript

Dan Abramovのブログ — overreacted.io

Reactコアチームメンバー Dan AbramovのCLAUDE.md。Next.js 15静的ブログ、MDX処理パイプライン、Shikiシンタックスハイライト、率直なコミットメッセージガイドライン。

# CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

## Development Commands

```bash
# Start development server
npm run dev

# Build static site for production
npm run build

# Start production server (after build)
npm start

# Lint th...

gaearon/overreacted.io7,300

CLAUDE.mdNext.js

TypeScript

YourNextStore: ECサイト AGENTS.md

Commerce Kit SDKの例、Biomeリントルール、エラーハンドリングパターン、モード別エージェントワークフローノートを含むAIネイティブECプラットフォーム。

# AGENTS.md

Your Next Store -- e-commerce app built with Next.js App Router + Commerce Kit SDK.

## Commands
```bash
bun dev           # Dev server (port 3000)
bun run build     # Production build
bun start         # Production server
bun run lint      # Biome lint (--write to auto-fix)
bun run for...

yournextstore/yournextstore5,300

AGENTS.mdNext.js

TypeScript

Next.js + TypeScript アプリ

Next.js App Router + TypeScriptの包括的ルール。Server Components優先、Shadcn UI、Tailwind CSS。

You are an expert in TypeScript, Node.js, Next.js App Router, React, Shadcn UI, Radix UI and Tailwind CSS.

Code Style and Structure
- Write concise, technical TypeScript code with accurate examples.
- Use functional and declarative programming patterns; avoid classes.
- Prefer iteration and modular...

cursor.directory1,240

.cursorrulesNext.js

TypeScript

next-music-player — AGENTS.md

A blazing fast, information dense media player built with Next.js.

# AGENTS.md

## Cursor Cloud specific instructions

### Overview

This is a **Next.js Music Player** — a single full-stack Next.js 16 app (not a monorepo). It uses PostgreSQL via Drizzle ORM, Vercel Blob for file storage, and Tailwind CSS v4 for styling. See `README.md` for feature list and standard...

leerob/next-music-player826

Next.js

TypeScript

next-devtools-mcp — CLAUDE.md

Next.js Development for Coding Agent

# CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

## Project Overview

This is an MCP (Model Context Protocol) server that provides Next.js development tools for AI coding assistants. The server exposes tools, prompts, and resources ...

vercel/next-devtools-mcp679

Next.js

TypeScript

Next.js + Supabase + Shadcn PWA

Supabaseバックエンド、Shadcn UIコンポーネント、PWAサポート付きフルスタックNext.js。

## Key Principles

- **Code Quality & Style**

  - Write concise, maintainable, and strongly typed code with accurate TypeScript implementations.
  - Embrace functional, declarative programming. Avoid OOP and classes.
  - Limit files to a maximum of 150 lines; refactor into smaller modules if exceed...

awesome-cursorrules

.cursorrulesNext.js

TypeScript