Design e Frontend

Enforces engineering standards and code quality policies. Use during code reviews, before commits, when discussing standards or compliance, for quality audits, and when running retrospectives. Trigger phrases include 'run a retro', 'retrospective', 'code review', 'run review', or 'audit standards'.

Material UI component library patterns for React

Type-safe i18n for Vue 3 Composition API

Padrões e metodologia de otimização de desempenho em Golang, abordando redução de alocação, eficiência de CPU, layout de memória, ajuste de GC, pooling, caching e otimização de hot-path. Utilize ao identificar gargalos em profiling ou benchmarks, ou para sugerir melhorias em revisões de código de desempenho.

Structured content platform — GROQ queries, schema definitions, @sanity/client, Portable Text, image handling, real-time listeners, mutations, TypeGen

WCAG, ARIA, keyboard navigation

Expert prompt engineering for AI systems. Use when the user wants to write or review prompts for AI, create instructions for AI systems, build system prompts, review or improve existing prompts, optimize AI instructions, or create any form of written communication intended for AI consumption (Claude, GPT, or other LLMs).

This skill should be activated when the user wants to build an agent, design tools for an agent, write skills, structure a CLAUDE.md, optimize prompt caching, set up worktrees, use subagents, design verification loops, write hooks, structure a project for Claude Code, or improve their Claude Code workflow. Relevant when the user says "how should I structure this", "write a skill for", "design this

Turn briefs, mockups, and product context into Stitch UI screens, design systems, variants, prototypes, Tailwind-friendly HTML, and screenshots. Use when the user wants to explore a screen, edit an existing Stitch project, compare visual directions, build a multi-screen prototype, or save local design/code-export artifacts from natural-language input.

Modern native JavaScript (ES2022-ES2025) utility patterns that replace lodash

Expert coach for learning, mastering, and upskilling in any domain. Use when the user wants to learn, master, improve, upskill, get better at, or get coached on any topic. Helps build consistent practice habits, identify prerequisites, design efficient learning loops, avoid common pitfalls, maintain discipline, and measure progress. Based on evidence-based principles from "Advice on Upskilling" by

ICU message format internationalization