ios-simulator-skill

raffle-winner-picker

ComposioHQ

Picks random winners from lists, spreadsheets, or Google Sheets for giveaways, raffles, and contests. Ensures fair, unbiased selection with transparency.

webapp-testing

ComposioHQ

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

cloudflare-browser-rendering

mrgoonie

Guide for implementing Cloudflare Browser Rendering - a headless browser automation API for screenshots, PDFs, web scraping, and testing. Use when automating browsers, taking screenshots, generating PDFs, scraping dynamic content, extracting structured data, or testing web applications. Supports REST API, Workers Bindings (Puppeteer/Playwright), MCP servers, and AI-powered automation. (project)

Systematic Debugging

mrgoonie

Four-phase debugging framework that ensures root cause investigation before attempting fixes. Never jump to solutions.

Root Cause Tracing

mrgoonie

Systematically trace bugs backward through call stack to find original trigger

Verification Before Completion

mrgoonie

Run verification commands and confirm output before claiming success

Defense-in-Depth Validation

mrgoonie

Validate at every layer data passes through to make bugs impossible

Scale Game

mrgoonie

Test at extremes (1000x bigger/smaller, instant/year-long) to expose fundamental truths hidden at normal scales

chrome-devtools

mrgoonie

Browser automation, debugging, and performance analysis using Puppeteer CLI scripts. Use for automating browsers, taking screenshots, analyzing performance, monitoring network traffic, web scraping, form automation, and JavaScript debugging.

cloudflare-workers

mrgoonie

Comprehensive guide for building serverless applications with Cloudflare Workers. Use when developing Workers, configuring bindings, implementing runtime APIs, testing Workers, using Wrangler CLI, deploying to production, or building edge functions with JavaScript/TypeScript/Python/Rust.

docs-seeker

mrgoonie

Searching internet for technical documentation using llms.txt standard, GitHub repositories via Repomix, and parallel exploration. Use when user needs: (1) Latest documentation for libraries/frameworks, (2) Documentation in llms.txt format, (3) GitHub repository analysis, (4) Documentation without direct llms.txt support, (5) Multiple documentation sources in parallel

Creating Development Plans

sammcj

Creates structured development plans with phased task breakdowns, requirements, and QA checklists. Use when the user explicitly asks to create a dev plan, development plan, or document development requirements.