Frontend

Python development best practices including PEP 8 style guidelines, type hints, docstring conventions, and common patterns. Use when writing or modifying Python code.

Detects code smells, anti-patterns, and debugging issues. Use when: fixing bugs, reviewing code quality, or refactoring.

Force at least one feedback signal after code changes (static checks, logs, tests, UI); prefer local over CI.

Turn the idea for a feature into a fully-formed PRD/design/specification and implementation-plan. Use when you have a spec or requirements that needs implementation. Use in pre-implementation (idea-to-design) stages to make sure you understand the spec/requirements and ensure you have a correct implementation plan before writing actual code.

Explicit-only: pick the next `bd ready` bead via risk-first heuristics; verify dependency/readiness, add missing deps, then mark in progress and comment.

Resolves React hook violations (rules of hooks, useEffect dependencies, hook ordering).

Chrome DevTools Protocol (CDP) browser automation, web scraping, crawling. 브라우저 자동화, 웹 스크래핑, 크롤링.Features/기능: screenshot with region control 영역지정스크린샷, viewport control 뷰포트제어, PDF generation PDF생성, web scraping 웹스크래핑, data extraction 데이터추출, form filling 폼작성, login automation 로그인자동화, click/input 클릭/입력, element finder 요소찾기, tab management 탭관리, cookie control 쿠키제어, JavaScript execution JS실행, page navigation 페이지이동, wait for element 요소대기, scroll 스크롤, accessibility tree 접근성트리, console messages 콘솔메시지, network idle 네트워크대기, back/forward 뒤로/앞으로, reload 새로고침, file upload 파일업로드, React compatibility React호환성, Smart Mode with Interaction Map 스마트모드.Selectors 셀렉터: CSS selectors (ID, class, attribute), XPath selectors with wildcard * (text-based, structural), XPath indexing (select N-th element with same text). Smart Mode: text-based element search with automatic selector generation.Bot detection bypass 봇감지우회 (navigator.webdriver=false). Auto Chrome connection 자동크롬연결. Headless/headed mode. Daemon-based architecture 데몬기반.

Unified testing commands and patterns across frontend and backend.

This skill provides tools and techniques for Magento Admin panel automation. Includes admin login, customer management, search term analysis, and other common admin scenarios. Suitable for tasks requiring complex operations on e-commerce admin backends.

Expert knowledge for React 18+ development with TypeScript. Use when building React components, managing state, or integrating with Litestar/Vite.

Update flake.lock to get latest packages within the current NixOS release - runs nix flake update, checks build, and optionally applies

Advanced file management tools. Includes batch folder creation, batch file moving, file listing, and HTML author extraction.

Implement web search, url content extraction, website crawling, and deep research with the tavily API. Use when building agentic workflows, rag systems, or autonomous agents that require real-time context from the web.

Xcode build system guidance for xcodebuild operations. Use when building iOS projects, running tests, analyzing build failures, or configuring schemes. Covers build/clean/test operations, interpreting xcodebuild output, and troubleshooting common build errors.

This skill provides tools and techniques for e-commerce website automation. Includes advanced search, product comparison, cart management, checkout process and other common shopping scenarios. Suitable for tasks requiring complex operations on e-commerce websites.

Expert knowledge for Svelte 5 development. Use when building Svelte components, using runes, or integrating with SvelteKit and Litestar.

Expert knowledge for Vue 3 development with TypeScript. Use when building Vue components, Composition API, or integrating with Litestar/Vite.

Expert knowledge for Angular 18+ with Vite. Use when building Angular components, services, or integrating with Litestar backend.

Accessibility-first UI automation using IDB. Query accessibility tree (fast, 50 tokens) before screenshots (slow, 170 tokens). Use when automating simulator interactions, tapping UI elements, finding buttons, or testing user flows. Covers idb-ui-describe, idb-ui-tap, idb-ui-find-element patterns.

Executes OpenAI Codex CLI for code analysis, refactoring, and automated editing. Activates when users mention codex commands, code review requests, or automated code transformations requiring advanced reasoning models.