anthropics

This skill documents how to create user-configurable Claude Code plugins using .local.md files with YAML frontmatter. It provides bash utilities for parsing settings files and examples of hooks that adapt their behavior based on project-specific configuration.

A comprehensive guide for creating skills in Claude Code plugins. It covers skill anatomy, progressive disclosure principles, writing style requirements, and provides step-by-step workflows for planning, creating, validating, and iterating on skills.

Theme Factory provides a collection of 10 professionally designed themes with curated color palettes and font pairings. Users can preview themes visually and apply them to slide decks, documents, reports, and HTML pages. Custom themes can also be generated on-the-fly based on user requirements.

A comprehensive spreadsheet skill for creating, editing, and analyzing Excel files (.xlsx). It provides Python code patterns using pandas and openpyxl, plus a recalculation script that uses LibreOffice to compute formula values and detect errors.

This skill provides a complete toolkit for testing local web applications using Playwright. It includes helper scripts for managing server lifecycles, capturing browser console logs, discovering page elements, and automating interactions with both dynamic web apps and static HTML files.

This skill provides comprehensive guidance for creating effective Claude Code skills. It includes scripts to initialize new skill directories with proper templates, validate skill structure and frontmatter, and package skills into distributable .skill files. The skill also documents best practices for skill design including progressive disclosure patterns and resource organization.

This skill enables Claude to create, edit, and analyze PowerPoint presentations. It supports creating slides from HTML with accurate positioning, editing existing presentations by manipulating raw OOXML format, using templates to create new presentations, and generating thumbnail previews. The skill includes comprehensive validation to ensure output files are properly formatted.

A comprehensive PDF manipulation toolkit that enables extracting text and tables, creating new PDFs, merging and splitting documents, and filling out forms. It includes Python scripts for both fillable PDF forms and non-fillable PDFs requiring visual annotation placement.

This skill provides a complete guide for building MCP (Model Context Protocol) servers that enable LLMs to interact with external services. It includes implementation patterns for Python (FastMCP) and TypeScript (MCP SDK), best practices for tool design, and an evaluation harness to test MCP server quality using Claude.

A design methodology skill that guides creation of visually striking, memorable frontend interfaces. It provides principles for typography, color, motion, and spatial composition while encouraging bold aesthetic choices that avoid generic AI-generated looks. The skill contains no executable code - only design thinking frameworks and implementation guidelines.

A comprehensive document creation and editing skill that enables Claude to work with Word documents (.docx files). It supports creating new documents, editing existing ones with proper tracked changes (redlining), adding comments, and extracting text content while preserving formatting and document structure.

Canvas Design helps Claude create museum-quality visual art by first developing a design philosophy (aesthetic movement) and then expressing it as a refined PDF or PNG artwork. It emphasizes expert craftsmanship, minimal text, and abstract compositions with included open-source fonts for typography.

Creates algorithmic art through p5.js generative sketches. Users describe a creative vision, and the skill generates an 'algorithmic philosophy' manifesto followed by interactive HTML/JS code that produces unique visual art using flow fields, particle systems, and mathematical patterns.

This skill enables Claude to create algorithmic and generative art using p5.js. It follows a two-step process: first creating an 'algorithmic philosophy' describing the aesthetic movement, then implementing it as interactive p5.js sketches with seeded randomness, flow fields, particle systems, and parametric controls.

Migrate prompts and code from Claude Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5. Use when the user wants to update their codebase, prompts, or API calls to use Opus 4.5. Handles model string updates and prompt adjustments for known Opus 4.5 behavioral differences. Does NOT migrate Haiku 4.5.

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.

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 GIF of X doing Y for Slack."

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.).

Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.

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.

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.

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

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

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

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

A comprehensive marketplace plugin directory containing Stripe payment integration best practices, language server protocol support for multiple programming languages, security pattern detection hooks, and MCP integrations for popular services like GitHub, Slack, Linear, and Supabase.

This skill provides comprehensive guidance for building Stripe payment integrations. It includes best practices for using Checkout Sessions, Payment Intents, webhooks, and Stripe Connect, along with helpful commands for explaining error codes and displaying test card numbers.

Stripe Best Practices provides comprehensive guidance for building Stripe payment integrations, including recommendations for CheckoutSessions, PaymentIntents, subscriptions, and Connect platforms. It includes utility commands to explain Stripe error codes and display test card numbers for development testing.

This is the official Claude Code plugins marketplace containing curated development tools, language server integrations, and third-party service connectors. The Stripe skill specifically provides best practices for implementing payment processing, checkout flows, subscriptions, and webhooks using Stripe's recommended patterns and APIs.

Provides comprehensive best practices for building Stripe integrations including payment processing, checkout flows, subscriptions, webhooks, and Connect platforms. Includes commands for explaining Stripe error codes and displaying test card numbers for development.

This is the official Claude Code plugins marketplace containing curated extensions including Stripe payment integration best practices, language server protocols for code intelligence, security guidance hooks, and various productivity tools for development workflows.

This is the official Claude Code plugins directory containing Stripe integration best practices, multiple language server integrations, and development productivity tools. The Stripe skill provides guidance on using Checkout Sessions, Payment Intents, and avoiding deprecated APIs like Charges and Sources.

This skill provides best practices and guidelines for building Stripe payment integrations. It covers CheckoutSessions, Payment Element, webhooks, subscriptions, and Connect platforms, with documentation references to official Stripe docs and commands for error explanation and test card references.

Provides comprehensive best practices for building Stripe payment integrations, including guidance on CheckoutSessions, PaymentIntents, subscriptions, and Connect platforms. Includes commands for explaining Stripe errors and displaying test card numbers for development.

A comprehensive Stripe development skill that provides best practices for building payment integrations, checkout flows, subscriptions, webhooks, and Connect platforms. Includes reference documentation links, test card commands, and error explanation utilities to help developers implement Stripe APIs correctly and securely.

This skill helps maintain and improve CLAUDE.md files in your repositories. It audits existing files against quality criteria, provides detailed scoring reports, and suggests targeted improvements to ensure Claude Code has optimal project context for future sessions.

This skill scans your codebase to recommend tailored Claude Code automations. It analyzes your project's language, frameworks, and tools to suggest the most valuable hooks, skills, MCP servers, and subagents for your workflow. The skill is read-only and outputs recommendations without making any changes to your project.

This is Anthropic's official Claude Code plugins directory containing Stripe payment integration best practices, language server support for 11+ programming languages, security pattern detection hooks, and integrations with services like GitHub, GitLab, Slack, Linear, Asana, and Supabase. The Stripe skill specifically guides developers on using Checkout Sessions, Payment Elements, webhooks, and Connect platforms following Stripe's recommended patterns.

Provides comprehensive guidance for Stripe payment integrations, recommending modern APIs like CheckoutSessions and Payment Element while warning against deprecated patterns. The skill references official Stripe documentation for checkout flows, subscriptions, Connect platforms, and webhook handling.

Comprehensive toolkit for developing Claude Code plugins with 7 specialized skills covering hooks, MCP integration, plugin structure, settings, commands, agents, and skill development. Includes validation utilities, working examples, and detailed documentation following progressive disclosure principles.

Hookify lets you create custom hooks that warn or block specific behaviors in Claude Code. Define rules in markdown files with regex patterns to catch dangerous commands, debug code, or enforce workflows - no complex configuration needed.

Ralph Loop implements continuous self-referential AI loops for interactive iterative development. It uses a stop hook to repeatedly feed the same prompt, allowing Claude to see and improve upon its previous work until completion criteria are met.

This plugin transforms Claude into an interactive learning assistant that asks you to write meaningful code at key decision points (5-10 lines) instead of implementing everything automatically. It also provides educational insights about implementation choices and codebase patterns, helping you learn by doing rather than just watching.

This plugin adds educational insights to your Claude Code sessions, explaining implementation choices and codebase patterns as you work. It recreates the deprecated Explanatory output style using a SessionStart hook.

A code review skill that launches multiple AI agents to audit pull requests for bugs and guideline compliance, filtering results by confidence score to reduce false positives.

Feature Development provides a structured 7-phase workflow for building new features: discover requirements, explore the codebase with specialized agents, clarify ambiguities, design architecture, implement with approval, review quality, and summarize results. Uses code-explorer, code-architect, and code-reviewer agents in parallel for thorough analysis.

Automates common git operations with three commands: /commit for smart commits, /commit-push-pr for complete PR workflows, and /clean_gone for branch cleanup. Integrates with GitHub CLI for PR creation.

Comprehensive PR review toolkit with 6 specialized agents for analyzing code comments, test coverage, error handling, type design, code quality, and simplification. Each agent focuses on a specific aspect of code quality and provides actionable feedback.

Create new Claude Agent SDK projects with proper setup and configuration. Choose between TypeScript or Python, get the latest SDK version, and automatically verify your application follows best practices.

This skill provides installation instructions for the Lua Language Server (lua-language-server), which enables code intelligence, diagnostics, and language server features for .lua files in Claude Code. Users must install the language server binary separately via Homebrew, snap, pacman, or manual download.

This skill provides setup instructions for Eclipse JDT.LS, a Java language server that enables code intelligence, refactoring, and enhanced editing support for .java files in Claude Code. Requires Java 17+ and manual jdtls installation.

This skill provides instructions for installing the csharp-ls language server, which enables C# code intelligence, diagnostics, and language server features in Claude Code for .cs files.

Provides documentation for integrating Kotlin language server with Claude Code. Requires installing kotlin-lsp CLI separately via Homebrew. Enables code intelligence, refactoring, and analysis for .kt and .kts files.

Swift Lsp is a documentation skill that provides setup instructions for using SourceKit-LSP with Claude Code. It guides users on installing the Swift toolchain (via Xcode on macOS or from swift.org on Linux) to enable Swift code intelligence for .swift files.

A documentation skill that provides installation instructions for the Intelephense PHP language server. It enables PHP code intelligence and diagnostics in Claude Code through the globally installed Intelephense package.

A reference skill that provides installation instructions and documentation for the clangd Language Server Protocol, which enables code intelligence, diagnostics, and formatting for C/C++ projects in Claude Code.

Provides installation instructions for rust-analyzer, the Rust language server that enables code intelligence, autocomplete, and analysis features for .rs files in Claude Code. Requires manual installation of the rust-analyzer binary.

Provides instructions for setting up gopls, the official Go language server that offers code intelligence, refactoring, and analysis features for .go files in Claude Code.

Integrates the Pyright language server to provide static type checking and code intelligence for Python files. Adds support for .py and .pyi extensions with advanced type analysis.

This skill provides setup instructions for the TypeScript Language Server, which adds code intelligence features like go-to-definition, find references, and error checking for TypeScript and JavaScript files in Claude Code.

This is the official Stripe plugin that helps developers build payment integrations. It provides best practices guidance, error code explanations, test card references, and connects to Stripe's MCP server for enhanced payment processing capabilities.

A comprehensive educational skill that teaches developers how to structure Claude Code plugins. It covers directory layout conventions, plugin.json manifest configuration, component organization (commands, agents, skills, hooks), the ${CLAUDE_PLUGIN_ROOT} portable path variable, and best practices with examples ranging from minimal to enterprise-grade plugins.

This skill provides complete guidance for integrating MCP (Model Context Protocol) servers into Claude Code plugins. It covers all four server types (stdio, SSE, HTTP, WebSocket), authentication patterns (OAuth, tokens, environment variables), tool naming conventions, and security best practices for connecting plugins to external services.

This skill provides comprehensive documentation for writing hookify rules - markdown files with YAML frontmatter that define patterns to watch for and messages to show when those patterns match. It covers rule file format, event types (bash, file, stop, prompt), regex pattern syntax, advanced conditions, and best practices for organizing rule files.

This skill teaches developers how to create autonomous agents for Claude Code plugins. It provides comprehensive documentation on agent file structure, YAML frontmatter fields, system prompt design patterns, and triggering conditions with concrete examples. Includes a bash validation script to check agent files for correct structure.

This skill provides comprehensive guidance on creating Claude Code slash commands, including YAML frontmatter configuration, dynamic arguments ($1, $2, $ARGUMENTS), file references with @ syntax, bash execution, and plugin-specific features like ${CLAUDE_PLUGIN_ROOT}. It covers interactive commands using AskUserQuestion, multi-step workflows, testing strategies, and marketplace distribution considerations.

A comprehensive guide for creating Claude Code plugin hooks that automate validation, context loading, and workflow enforcement. Includes working example scripts for validating file writes and bash commands, plus utility scripts for testing and linting hook implementations before deployment.