Skills von Anthropic

Create, read, and edit .xlsx/.xlsm/.xltx/.csv/.tsv files with built-in formula recalculation and validation.

Create new skills, iterate on existing ones with eval-driven testing, and tune the triggering description.

Walk through a three-stage workflow that turns raw context into a reader-tested document.

Build, edit, and inspect Word (.docx) files through docx-js, pandoc, and direct word/document.xml edits.

Process PDFs end-to-end: merge, split, extract text and tables, create, encrypt, watermark, OCR, and more.

Create, edit, and extract content from .pptx files via XML manipulation and pptxgenjs.

Generates algorithmic art by first writing a computational philosophy, then expressing it as p5.js code.

Generates a visual design philosophy and expresses it as a single-page artwork in PNG or PDF.

Step-by-step guide for building MCP servers that expose external services as LLM-callable tools.

Knowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack like "make me a G

Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one. Helps with aesthetic direction, typography, and making choices that don't read as templated defau

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Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser l

Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state manag

Toolkit for styling artifacts with a theme. These artifacts can be slides, docs, reportings, HTML landing pages, etc. There are 10 pre-set themes with colors/fonts that you can apply to any artifact t

Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting

A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal com