| academy-guide | A skill that recommends relevant Claude Academy courses and tutorials when users ask how to use Claude or its features, complementing product documentation with genuine, well-matched learning resources. | Apache-2.0 | Anthropic |
| algorithmic-art | Generates original algorithmic art with p5.js, using seeded randomness and interactive parameters for flow fields, particle systems, and similar generative visuals—avoiding replication of existing artists' work. | Apache-2.0 | Anthropic |
| brand-guidelines | Applies Anthropic's brand identity—color palette and typography (Poppins/Lora, with Arial/Georgia fallbacks)—to documents or slides, using python-pptx's RGBColor for precise, context-aware color and text styling. | Apache-2.0 | Anthropic |
| canvas-design | This tool generates original visual artwork as .png or .pdf files, applying design principles to produce posters or static designs without replicating existing artists' work. | Apache-2.0 | Anthropic |
| claude-api | A documentation reference for the Claude API/Anthropic SDK covering model identifiers, pricing, parameters, streaming, tool use, MCP, agent workflows, caching, token counting, and guidance for migrating between models. | Apache-2.0 | Anthropic |
| discernment-nudge | A guideline for an AI assistant to self-review substantive outputs like advice, drafts, or analyses, then append a few targeted follow-up questions checking facts, assumptions, and gaps—applied once per conversation, excluding trivial or creative requests. | Apache-2.0 | Anthropic |
| doc-coauthoring | This tool guides users through a structured, iterative process for co-writing documentation like proposals or specs, helping convey context and validate reader clarity. | — | Anthropic |
| docx | A skill for creating, reading, editing, and formatting Word documents and templates (.docx/.dotx), covering content extraction, image handling, find-and-replace, tracked changes, and comments—excluding PDFs, spreadsheets, or unrelated coding tasks. | Proprietary | Anthropic |
| frontend-design | Offers design guidance for creating distinctive, intentional visual interfaces, covering aesthetic direction and typography choices that avoid generic, templated appearances. | Apache-2.0 | Anthropic |
| internal-comms | A skill providing templates and resources for drafting internal company communications—status reports, leadership updates, newsletters, FAQs, incident reports, and project updates—following the organization's preferred formats. | Apache-2.0 | Anthropic |
| mcp-builder | This guide explains best practices for building well-designed MCP servers, helping LLMs connect to external APIs using Python's FastMCP or Node/TypeScript's MCP SDK. | Apache-2.0 | Anthropic |
| pdf | This tool handles PDF files, enabling text/table extraction, merging, splitting, rotating, watermarking, form filling, encryption, image extraction, and OCR for scanned documents. | Proprietary | Anthropic |
| pptx | A skill for handling PowerPoint .pptx/.potx files: creating, reading, extracting text, editing, merging or splitting decks, and managing templates, layouts, notes, and comments. | Proprietary | Anthropic |
| skill-creator | This tool supports creating, editing, and refining skills, plus evaluating them through performance benchmarking, variance analysis, and description optimization for improved triggering accuracy. | Apache-2.0 | Anthropic |
| slack-gif-creator | A toolkit offering guidelines, validation utilities, and animation ideas for producing Slack-optimized animated GIFs based on user requests. | Apache-2.0 | Anthropic |
| theme-factory | This toolkit applies visual themes—colors and fonts—to artifacts like slides, documents, reports, or HTML pages, offering 10 presets or custom theme generation. | Apache-2.0 | Anthropic |
| web-artifacts-builder | This tool set helps build complex multi-component HTML artifacts for claude.ai using React, Tailwind CSS, and shadcn/ui, suited for projects needing state management or routing. | Apache-2.0 | Anthropic |
| webapp-testing | A Playwright-based toolkit for testing local web apps, enabling frontend verification, UI debugging, screenshot capture, and browser log inspection. | Apache-2.0 | Anthropic |
| xlsx | This skill activates for tasks centered on spreadsheet files (xlsx, xlsm, xltx, csv, tsv), covering opening, editing, creating, converting, or cleaning tabular data, provided the output remains a spreadsheet. | Proprietary | Anthropic |