Agent Skills

claude-api

✓★ 158,100

by anthropic

Claude API integration for building LLM-powered applications across Python, TypeScript, Java, Go, Ruby, C#, and PHP. Defaults to Claude Opus 4.6 with adaptive thinking and streaming; supports tool use, structured outputs, batches, and file uploads through a single /v1/messages endpoint Language detection automatically routes you to the correct SDK documentation; includes decision trees for choosing between single API calls, workflows with tool use, and agentic loops Tool runner (beta in most...

doc-coauthoring

✓★ 158,100

by anthropic

Structured workflow for collaboratively authoring documentation, proposals, specs, and similar content. Guides users through three stages: Context Gathering (closing knowledge gaps), Refinement & Structure (building sections iteratively), and Reader Testing (validating the doc works for fresh readers) Supports integration with shared documents, team channels, and templates to pull in context directly when connectors are available Uses brainstorming and curation cycles for each section, with...

web-artifacts-builder

✓★ 158,100

by anthropic

Multi-component React artifacts for Claude with bundling, state management, and shadcn/ui component library. Scaffolds React 18 + TypeScript projects with Vite, Tailwind CSS, and 40+ pre-installed shadcn/ui components via automated initialization script Bundles complete artifacts into single self-contained HTML files with inlined assets, ready for Claude artifact display Includes design guidance to avoid common "AI slop" patterns like excessive centering, purple gradients, and uniform...

Brand Guidelines

✓★ 158,000

by Anthropic

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, or company design standards apply. license: Complete terms in LICENSE.txt

Frontend Design

✓★ 158,000

by Anthropic

Generates distinctive, production-grade frontend interfaces that avoid generic AI aesthetics.

Slack Gif Creator

✓★ 158,000

by Anthropic

Toolkit for creating animated GIFs optimized for Slack, with validators for size constraints and composable animation primitives. This skill applies when users request animated GIFs or emoji animations for Slack from descriptions like "make me a GIF for Slack of X doing Y". license: Complete terms in LICENSE.txt

Theme Factory

✓★ 158,000

by Anthropic

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 that has been creating, or can generate a new theme on-the-fly. license: Complete terms in LICENSE.txt

Algorithmic Art

✓★ 158,000

by Anthropic

Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright violations. license: Complete terms in LICENSE.txt

Canvas Design

✓★ 158,000

by Anthropic

Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations. license: Complete terms in LICENSE.txt

Docx

✓★ 158,000

by Anthropic

Comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction. When Claude needs to work with professional documents (.docx files) for: (1) Creating new documents, (2) Modifying or editing content, (3) Working with tracked changes, (4) Adding comments, or any other document tasks" license: Proprietary. LICENSE.txt has complete terms

Internal Comms

✓★ 158,000

by Anthropic

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 communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project updates, etc.). license: Complete terms in LICENSE.txt

MCP Builder

✓★ 158,000

by Anthropic

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK). license: Complete terms in LICENSE.txt

Artifacts Builder

✓★ 158,000

by Anthropic

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 management, routing, or shadcn/ui components - not for simple single-file HTML/JSX artifacts. license: Complete terms in LICENSE.txt

PDF

✓★ 158,000

by Anthropic

Comprehensive PDF manipulation toolkit for extracting text and tables, creating new PDFs, merging/splitting documents, and handling forms. When Claude needs to fill in a PDF form or programmatically process, generate, or analyze PDF documents at scale. license: Proprietary. LICENSE.txt has complete terms

Webapp Testing

✓★ 158,000

by Anthropic

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs. license: Complete terms in LICENSE.txt

XLSX

✓★ 158,000

by Anthropic

Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas" license: Proprietary. LICENSE.txt has complete terms

PPTX

✓★ 158,000

by Anthropic

Presentation creation, editing, and analysis. When Claude needs to work with presentations (.pptx files) for: (1) Creating new presentations, (2) Modifying or editing content, (3) Working with layouts, (4) Adding comments or speaker notes, or any other presentation tasks" license: Proprietary. LICENSE.txt has complete terms

Skill Creator

✓★ 158,000

by Anthropic

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations. license: Complete terms in LICENSE.txt

frontend-design

✓★ 136,000

by anthropic

Distinctive, production-grade frontend interfaces that reject generic AI aesthetics through intentional design direction. Guides developers through design thinking before coding: establish purpose, tone, constraints, and a memorable differentiator to avoid cookie-cutter results Emphasizes typography choices (distinctive display and body fonts), cohesive color palettes with CSS variables, and high-impact motion through staggered animations and scroll triggers Covers spatial composition...

claude-opus-4-5-migration

✓★ 136,000

by anthropic

Migrate Claude model strings and prompts from Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5. Updates model strings across Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry platforms Removes unsupported beta headers (e.g., context-1m-2025-08-07 ) and adds effort parameter set to "high" Provides optional prompt adjustments for known Opus 4.5 behavioral differences: tool overtriggering, over-engineering, code exploration conservatism, frontend design, and thinking sensitivity...

bootstrap-realtime-eval

✓★ 74,500

by openai

Bootstrap a new realtime eval folder inside this cookbook repo by choosing the right harness from examples/evals/realtime_evals, scaffolding prompt/tools/data…

jupyter-notebook

✓★ 68,500

by microsoft

Use when the user asks to create, scaffold, or edit Jupyter notebooks (`.ipynb`) for experiments, explorations, or tutorials; prefer the bundled templates and…

microsoft-docs

✓★ 68,500

by microsoft

Query official Microsoft documentation to find concepts, tutorials, and code examples across Azure, .NET, Agent Framework, Aspire, VS Code, GitHub, and more.…

cookbook-audit

✓★ 46,400

by anthropic

Audit an Anthropic Cookbook notebook based on a rubric. Use whenever a notebook review or audit is requested.

analyzing-financial-statements

✓★ 46,400

by anthropic

This skill calculates key financial ratios and metrics from financial statement data for investment analysis

applying-brand-guidelines

✓★ 46,400

by anthropic

This skill applies consistent corporate branding and styling to all generated documents including colors, fonts, layouts, and messaging

creating-financial-models

✓★ 46,400

by anthropic

This skill provides an advanced financial modeling suite with DCF analysis, sensitivity testing, Monte Carlo simulations, and scenario planning for investment…

analyzing-financial-statements

✓★ 46,400

by anthropic

This skill calculates key financial ratios and metrics from financial statement data for investment analysis

applying-brand-guidelines

✓★ 46,400

by anthropic

This skill applies consistent corporate branding and styling to all generated documents including colors, fonts, layouts, and messaging

creating-financial-models

✓★ 46,400

by anthropic

This skill provides an advanced financial modeling suite with DCF analysis, sensitivity testing, Monte Carlo simulations, and scenario planning for investment…