
Set up new projects with frameworks or languages in the current working directory. Use when the user explicitly requests to scaffold, set up, initialize, or create a new project. Supports any language setup or framework. Proactively searches for latest versions and best practices, surfaces choices to the user when multiple options exist.
Proactively use this skill when implementing features, fixing bugs, or refactoring code. Enforces test-driven development with 80%+ coverage including unit, integration, and E2E tests.
Review recently changed code with three separate read-only agents for reuse, quality, and efficiency, then return prioritized issue lists. Use after implementing changes, before verification or commit, or when the user asks to simplify, clean up, reduce duplication, or review recent changes.
React composition patterns that scale. Use when refactoring components with boolean prop proliferation, building flexible component libraries, or designing reusable APIs. Triggers on tasks involving compound components, render props, context providers, or component architecture. Includes React 19 API changes.
Provides comprehensive security checklist and patterns. Use when information is needed about security best practices.
Universal coding standards, best practices, and patterns.
Next.js 16 Cache Components - PPR, use cache directive, cacheLife, cacheTag, updateTag
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
Systematically explore and test a web application to find bugs, UX issues, and other problems. Use when asked to "dogfood", "QA", "exploratory test", "find issues", "bug hunt", "test this app/site/platform", or review the quality of a web application. Produces a structured report with full reproduction evidence -- step-by-step screenshots, repro videos, and detailed repro steps for every issue -- so findings can be handed directly to the responsible teams.
Next.js best practices - file conventions, RSC boundaries, data patterns, async APIs, metadata, error handling, route handlers, image/font optimization, bundling
Browser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filling forms, clicking buttons, taking screenshots, extracting data, testing web apps, or automating any browser task. Triggers include requests to "open a website", "fill out a form", "click a button", "take a screenshot", "scrape data from a page", "test this web app", "login to a site", "automate browser actions", or any task requiring programmatic web interaction.
React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
A checklist of post-work verification steps. Use proactively after completing a feature or significant code change; before creating a PR; when you want to ensure quality gates pass or after refactoring. Do NOT run for documentation-only changes.