General AI Coding Rules

Browse curated General rules for Claude Code, Cursor and more. 10 rules available.

AGENTS.md — AIコーディングエージェント向けオープン仕様

Linux Foundation傘下のAIコーディングエージェント向けオープンフォーマット。開発環境・テスト・PR手順を統一的に記述。

# AGENTS.md — Open Specification

AGENTS.md is a simple, open format for guiding coding agents. Think of it as documentation specifically designed for AI agents — similar to how a README guides human developers.

## Recommended Sections

### Dev environment tips
- Instructions for setting up the dev...

GitHub60,000

AGENTS.mdGeneral

General

Windsurf Rules — .windsurfrules & グローバルルール

Windsurf IDEのルール設定ガイド。プロジェクトレベルの.windsurfrules、グローバルルールの使い分け。

# Windsurf Rules Guide

## File Types

### Project Rules: `.windsurfrules`
Place in project root. Applied to all AI interactions within the project.

### Global Rules: `global_rules.md`
Applied across all projects. Personal preferences and universal standards.

## Format
Standard Markdown. Structure...

GitHub500

.windsurfrulesGeneral

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Claude用フロントエンド美学ルール

Anthropic公式Cookbook。AIっぽいダサいデザインを避けるためのタイポグラフィ・カラー・アニメーション・背景ルール。

<frontend_aesthetics>
You tend to converge toward generic, "on distribution" outputs. In frontend design, this creates what users call the "AI slop" aesthetic. Avoid this: make creative, distinctive frontends that surprise and delight. Focus on:

Typography: Choose fonts that are beautiful, unique, ...

Anthropic Cookbook

CLAUDE.mdGeneral

CSS

GitHub Copilot カスタムインストラクション公式ガイド

GitHub公式の.github/copilot-instructions.mdガイド。リポジトリ全体・パス別の指示設定とglobパターン対応。

# GitHub Copilot Custom Instructions

## File Location
Create `.github/copilot-instructions.md` in your repository root. Uses Markdown format with natural language instructions.

## Three Types of Custom Instructions

1. **Repository-wide**: `copilot-instructions.md` in `.github/` applies to all req...

GitHub Docs

copilot-instructions.mdGeneral

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Cline Rules 公式ガイド

Cline公式の.clinerules/ディレクトリガイド。ワークスペース/グローバルルール、YAML frontmatterによるパス条件付き適用。

# Cline Rules Guide

## Supported Rule Types

| Format | Location | Notes |
|--------|----------|-------|
| Cline Rules | `.clinerules/` | Primary format |
| Cursor Rules | `.cursorrules` | Auto-detected |
| Windsurf Rules | `.windsurfrules` | Auto-detected |
| AGENTS.md | `AGENTS.md` | Cross-tool c...

Cline Docs

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Cursor Rules (.mdc形式) 公式ガイド

Cursor公式の.mdc形式ルールガイド。.cursorrules廃止→.mdc移行。4種の適用モード、frontmatter制御。

# Cursor Rules (.mdc Format)

## Rule Types

1. **Always Apply** — Active in every chat session
2. **Apply Intelligently** — Agent decides relevance based on description
3. **Apply to Specific Files** — Activated when file matches glob patterns
4. **Apply Manually** — Invoked via @-mention (e.g., `@...

Cursor Docs

.mdcGeneral

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OpenAI Codex — AGENTS.mdガイド

CodexがAGENTS.mdを読み込む仕組み。3階層の優先度（グローバル→プロジェクト→オーバーライド）、32KB制限。

# OpenAI Codex — AGENTS.md Guide

## Discovery Hierarchy (Three-Tier Precedence)

1. **Global scope**: `~/.codex/AGENTS.override.md` or `~/.codex/AGENTS.md`
2. **Project scope**: Files walking from Git root to current directory
3. **Merge order**: Files concatenate from root downward; closer files o...

OpenAI Docs

AGENTS.mdGeneral

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Aider CONVENTIONS.md 公式ガイド

AiderでのCONVENTIONS.md活用ガイド。ライブラリ選択、型アノテーション、コードスタイルを読み取り専用ファイルで管理。

# Aider CONVENTIONS.md Guide

## What to Include
- Library/package preferences (e.g., "Prefer httpx over requests")
- Type annotation requirements
- Code style guidelines
- Project-specific conventions

## Usage Methods

### Per-session loading
```bash
aider --read CONVENTIONS.md
```
Or in chat: `/r...

Aider Docs

CONVENTIONS.mdGeneral

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Copilotインストラクションを改善する5つのコツ

GitHub公式ブログ。プロジェクト概要・技術スタック・コーディング規約・構造・リソースの5つの観点でインストラクションを改善。

# 5 Tips for Writing Better Custom Instructions for GitHub Copilot

## 1. Provide a Project Overview
Include an elevator pitch: what your app does, who the audience is, and key features.
Example: "This is a website to support pet adoption agencies."

## 2. Identify Your Tech Stack
Document backend f...

GitHub Blog

copilot-instructions.mdGeneral

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Claude Code ベストプラクティス公式ガイド

Anthropic公式のClaude Codeベストプラクティス。CLAUDE.mdの書き方、マルチセッション、Writer/Reviewerパターン。

# Claude Code Best Practices (Official)

## CLAUDE.md Writing Guidelines
- Keep under 200 lines per file
- Write in imperative form (commands, not descriptions)
- Include only what Claude cannot infer from code
- Use bullet points, not paragraphs

## What to Include
- Build, test, deploy commands
- ...

Claude Code Docs

CLAUDE.mdGeneral

General