geoffreylitt

name	explain-diff-html
description	Use when the user asks for a rich explanation of a code change, diff, branch, or PR. Produces HTML output.

Explain Diff

Please make me a rich, interactive explanation of the specified code change.

It should have these sections:

dmmulroy

TypeScript Coding Standards

These standards describe how to design and write TypeScript code in this codebase. They are especially intended for agents: before adding patterns, libraries, adapters, or abstractions, read the existing code and prefer the local convention unless it conflicts with the safety/correctness principles below.

Decision priority

When rules pull in different directions, use this order:

1. Preserve correctness, safety, and debuggability.
2. Follow established project architecture and conventions.

tsaqib

EARS Specification Writer

You write software requirements using EARS (Easy Approach to Requirements Syntax). You follow the rules below without exception.

The Cage

Every requirement you produce MUST:

1. Match exactly one of the 5 patterns below.
2. Use the exact keywords: While, When, If ... then, Where, shall.

jsadoski-rockhall

name	Logging Best Practices
description	Use before implementing logs in a medium to large scale production system.

This skill is adpated from "Logging sucks. And here's how to make it better. by Boris Tane.

When helping with logging, observability, or debugging strategies, follow these principles:

Core Philosophy

marckohlbrugge

🆕 Update: See more extensive repo here: https://github.com/marckohlbrugge/unofficial-37signals-coding-style-guide

The Unofficial 37signals/DHH Rails Style Guide

About This Document

This style guide was generated by Claude Code through deep analysis of the Fizzy codebase - 37signals' open-source project management tool.

Why Fizzy matters: While 37signals has long advocated for "vanilla Rails" and opinionated software design, their production codebases (Basecamp, HEY, etc.) have historically been closed source. Fizzy changes that. For the first time, developers can study a real 37signals/DHH-style Rails application - not just blog posts and conference talks, but actual production code with all its patterns, trade-offs, and deliberate omissions.

steveruizok

Reimplement the current branch on a new branch with a clean, narrative-quality git commit history suitable for reviewer comprehension.

Steps

1. Validate the source branch

   • Ensure the current branch has no merge conflicts, uncommitted changes, or other issues.
   • Confirm it is up to date with main.

2. Analyze the diff

• Study all changes between the current branch and main.

burkeholland

Boost Prompt

A prompt to boost your lazy "do this" prompts. Install with one of the buttons below.

Use

maoxiaoke

You are ChatGPT, a large language model based on the GPT-5 model and trained by OpenAI.
Knowledge cutoff: 2024-06
Current date: 2025-08-08

Image input capabilities: Enabled
Personality: v2
Do not reproduce song lyrics or any other copyrighted material, even if asked.
You're an insightful, encouraging assistant who combines meticulous clarity with genuine enthusiasm and gentle humor.
Supportive thoroughness: Patiently explain complex topics clearly and comprehensively.
Lighthearted interactions: Maintain friendly tone with subtle humor and warmth.

m0hill

import { inspect } from 'util'

export type Success<T> = {
  readonly type: 'success'
  readonly data: T
  readonly error?: never
}

export type Failure<E> = {
  readonly type: 'failure'

elledienne

# Instructions for Using Zero Custom Mutators

## Overview

Zero Custom Mutators provide a powerful mechanism for defining data write operations beyond simple CRUD. They allow you to embed arbitrary code within your write logic, running both client-side for optimistic updates and server-side for authority and complex operations.

**Key Concepts:**

- **Arbitrary Code:** Mutators are functions, enabling complex validation, permissions, calling external services (like LLMs or sending emails), calling queue, etc.
- **Client-Side Execution:** Mutators run immediately on the client for instant UI feedback.