🎯Skills21
Interactive design plan review skill that rates each UI/UX dimension on a 0-10 scale, explains what would make it a 10, and iteratively fixes the plan to reach that level — like having a CEO and engineering review for your design decisions.
A visual QA skill that performs a designer's eye audit to find and fix visual inconsistencies, spacing issues, hierarchy problems, and AI slop patterns — iteratively committing each atomic fix with before/after screenshot verification.
A design consultation skill from gstack that researches your product landscape, proposes a complete design system (aesthetic, typography, color, layout, spacing, motion), and generates font and color preview pages, creating DESIGN.md as the project design source of truth.
A report-only QA testing skill that systematically tests a web application and produces a structured report with a health score, screenshots, and reproduction steps — without making any code fixes. Use it when you want a bug report without any code changes.
Wraps OpenAI Codex CLI in three modes: code review with pass/fail gating via independent diff review, challenge mode that adversarially tries to break your code, and consult mode for asking questions with session continuity.
A skill that upgrades gstack to the latest version, detecting whether it is installed globally or locally, running the upgrade, and showing a changelog of what's new. It supports auto-upgrade configuration, snooze options with escalating backoff, and restore-from-backup on failure.
Imports cookies from a real Chromium browser into a headless browse session through an interactive domain picker UI, enabling QA testing of authenticated pages without manual login.
Interactive developer experience plan review that explores developer personas, benchmarks against competitors, designs magical moments, and traces friction points before scoring.
A design exploration skill that generates multiple AI design variants, opens a comparison board for side-by-side review, collects structured feedback, and iterates. Useful for visual brainstorming and exploring UI design options before committing to a direction.
Land-and-deploy workflow that merges a PR, waits for CI and deploy, then verifies production health via canary checks as part of the gstack shipping pipeline.
Performs live developer experience audits by actually testing onboarding flows, navigating docs, timing TTHW (time to hello world), and screenshotting errors. Produces a DX scorecard with evidence and compares against planned targets.
Configures deployment settings for automated landing and deploying by detecting the deploy platform (Fly.io, Render, Vercel, Netlify, Heroku, GitHub Actions), production URL, health checks, and writing the config to CLAUDE.md.
Saves working context including git state, decisions made, and remaining work so any future session can pick up without losing progress, paired with context-restore.
Restores previously saved working context including git state and decisions, enabling seamless session resumption across workspace handoffs and breaks.
Generates production-quality HTML/CSS from approved mockups or user descriptions using Pretext-native patterns with dynamic layouts and zero dependencies.
Launches an AI-controlled Chromium browser with a built-in sidebar extension showing live activity feed and chat, featuring anti-bot stealth capabilities for real-time browser automation.
Cross-model benchmark skill for gstack that runs the same prompt through Claude, GPT (via Codex CLI), and Gemini side-by-side, comparing latency, tokens, cost, and optionally quality via LLM judge to determine which model is best for a given skill.
A skill and agent framework by Y Combinator CEO Garry Tan, designed to help builders ship more products using AI agents, with documented workflows for high-velocity development.
A gstack skill that codifies successful browser scraping flows into permanent, reusable scripts on disk, reducing future scrape calls from full page-driving to approximately 200ms by synthesizing script.ts, test files, and fixtures from the conversation history.
A documentation generation skill that produces structured docs using the Diataxis framework (tutorial, how-to, reference, explanation), capable of creating complete documentation for features, modules, or entire projects.
A gstack skill that performs visual design audits on iOS apps running on real hardware, connecting to an iPhone via StateServer to screenshot every screen and score each dimension 0-10 against Apple Human Interface Guidelines and project design standards.