Tools / Skills
AI coding skills builders use
A skill is a packaged set of instructions an AI assistant can load when a task calls for it, such as how to write tests the way your team does or how to review a design. Builders write about the skills that changed how they work.
- Anthropic document skills (docx, pdf, pptx, xlsx)The four skills behind Claude's file creation, for Word, PDF, PowerPoint and Excel files: create, read and edit them, with scripts for tracked changes, PDF forms and formula recalculation.Skill
- frontend-designAnthropic's design skill for Claude: written guidance that steers new or reworked UI away from templated defaults, toward a deliberate palette, typography and layout chosen for the subject.Skill
- webapp-testingAnthropic's skill for testing a local web app: Claude writes Python Playwright scripts, starts your dev server with a helper, then checks the page, takes screenshots and reads browser logs.Skill
- skill-creatorAnthropic's skill for writing new Agent Skills: it drafts the SKILL.md with you, runs test prompts with and without the skill, and helps tune the description so the skill triggers when it should.Skill