anthropics/skills

Algorithmic Art creates original generative art using p5.js with seeded randomness and interactive parameter exploration. Use it when users request code-based art, flow fields, particle systems, or other algorithmic visualizations.

Brand Guidelines applies Anthropic's official brand colors and typography to artifacts that benefit from the company's look-and-feel. Use it when brand colors, style guidelines, visual formatting, or company design standards apply.

Canvas Design creates original visual art in .png and .pdf documents guided by design philosophy. Use it when asked to create posters, art pieces, or other static designs, never copying existing artists' work to avoid copyright violations.

Claude API provides reference documentation for the Anthropic SDK, covering model IDs, pricing, parameters, streaming, tool use, MCP, agents, caching, token counting, and model migration. Use it before writing Claude integration code or when asked about Claude/Anthropic APIs, models, or limits.

Doc Co-Authoring guides users through a structured workflow for co-authoring documentation, from context gathering and iterative refinement to reader testing. Use it when writing proposals, technical specs, decision docs, or similar structured content.

Frontend Design guides distinctive, intentional visual design for building new UI or reshaping existing ones, including aesthetic direction, typography, and avoiding templated defaults. Use it when you need deliberate, non-generic visual choices for a frontend.

Internal Communications provides templates and guidelines for writing company status reports, leadership updates, 3P updates, newsletters, FAQs, incident reports, and project updates in approved formats. Use it whenever asked to draft internal communications.

MCP Builder provides a workflow for creating MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. It covers research, implementation, testing, and evaluation when building MCP servers in Python (FastMCP) or Node/TypeScript (MCP SDK).

PDF reads, merges, splits, rotates, and creates PDF documents, and extracts text, tables, and images, including OCR for scanned PDFs.

PPTX creates, edits, and reads PowerPoint presentations programmatically using scripts and direct XML manipulation. Use it when a .pptx or .potx file needs to be opened, created, modified, or extracted from in any workflow.

Skill Creator guides the creation, modification, and evaluation of Claude skills. Use it to draft new skills, iterate on existing ones, run test cases, and optimize skill descriptions for better triggering.

Slack GIF Creator creates animated GIFs optimized for Slack, with tools for drawing frames, applying animation concepts, and validating output against Slack's size and format constraints.

Template is a placeholder skill that demonstrates the required structure for creating new Claude Code skills. Use it as a starting point when authoring an agent skill.

Theme Factory applies curated color palettes and font pairings to artifacts such as slides, documents, reports, and HTML landing pages. Use it when you need consistent visual styling or a custom theme generated on the fly.

Web Application Testing verifies and debugs local web applications using Playwright. It supports frontend functional testing, screenshot capture, browser log viewing, and UI automation.

Web Artifacts Builder scaffolds a React, TypeScript, Tailwind CSS, and shadcn/ui project and bundles it into a single HTML artifact for claude.ai. Use it for elaborate multi-component artifacts that need state management or routing.

Word Documents creates, edits, and analyzes .docx files and Word templates, handling formatting, tracked changes, and comments. Use it whenever a user needs to produce, read, or modify Word documents programmatically.

XLSX creates, edits, and analyzes spreadsheet files such as .xlsx, .xlsm, .csv, and .tsv. Use it when a spreadsheet is the primary input or output, including cleaning messy tabular data, adding formulas, formatting, and converting between formats.