Alternatives to WebApp Testing Skill

Anthropic's official skill for creating distinctive, production-grade frontend interfaces with high design quality for web components, pages, and applications.

Anthropic's official toolkit for styling artifacts with 10 pre-set professional themes or generating custom themes on-the-fly for slides, docs, and HTML.

Anthropic's official suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using React, Tailwind CSS, and shadcn/ui.

Anthropic's official example skill that applies Anthropic brand colors (#141413, #faf9f5, #d97757) and Poppins/Lora typography to slides and documents.

Anthropic's official DOCX skill for comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction.

Anthropic's official meta-skill creation tool with templates and best practices for creating high-quality Claude Skills.

Anthropic's official skill providing knowledge and utilities for creating animated GIFs optimized for Slack with proper dimensions, file sizes, and creative.

Superpowers' writing-skills skill applies TDD to agent skills: watch an agent fail a pressure scenario first, write the SKILL.md, then close loopholes.

Anthropic's official skill for comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.

Anthropic's official skill providing resources for writing internal communications like status reports, leadership updates, company newsletters, FAQs, and incident reports.

Anthropic's official guide for creating high-quality MCP (Model Context Protocol) servers in Python (FastMCP) or Node/TypeScript to enable LLMs to interact w.

Anthropic's official PDF processing skill that teaches Claude Agent how to extract text, create, merge, or split PDF documents.

MIT Agent Skill that lets coding agents write and run custom Playwright scripts for page tests, form flows, screenshots, and scraping in a visible browser.

Create research posters using HTML/CSS exportable to PDF or PowerPoint - modern web-based poster design with responsive layouts.