anthropics

Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration.

Migrate prompts and code from Claude Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5.

This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use…

Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel.

Use this skill whenever the user wants to create, read, edit, or manipulate Word documents (.docx files) or Word templates (.dotx files).

Toolkit for interacting with and testing local web applications using Playwright.

Use this skill any time a spreadsheet file is the primary input or output.

Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration. TRIGGER — read BEFORE opening the target file;…

Create beautiful visual art in .png and .pdf documents using design philosophy.

Guide users through a structured workflow for co-authoring documentation.

A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use.