design-patterns
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github-workflow-automation
Automate GitHub workflows with AI assistance. Includes PR reviews, issue triage, CI/CD integration, and Git operations. Use when automating GitHub workflows, setting up PR review automation, creating GitHub Actions, or triaging issues.
openapi
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ruby
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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.
docx
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
pptx
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
clean-code
Pragmatic coding standards - concise, direct, no over-engineering, no unnecessary comments
clerk-auth
Expert patterns for Clerk auth implementation, middleware, organizations, webhooks, and user sync Use when: adding authentication, clerk auth, user authentication, sign in, sign up.
api-patterns
API design principles and decision-making. REST vs GraphQL vs tRPC selection, response formats, versioning, pagination.
architecture
Architectural decision-making framework. Requirements analysis, trade-off evaluation, ADR documentation. Use when making architecture decisions or analyzing system design.
copy-editing
When the user wants to edit, review, or improve existing marketing copy. Also use when the user mentions 'edit this copy,' 'review my copy,' 'copy feedback,' 'proofread,' 'polish this,' 'make this better,' or 'copy sweep.' This skill provides a systematic approach to editing marketing copy through multiple focused passes.
canvas-design
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.
docker-expert
Docker containerization expert with deep knowledge of multi-stage builds, image optimization, container security, Docker Compose orchestration, and production deployment patterns. Use PROACTIVELY for Dockerfile optimization, container issues, image size problems, security hardening, networking, and orchestration challenges.
writing-plans
Use when you have a spec or requirements for a multi-step task, before touching code
webapp-testing
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.
writing-skills
Use when creating new skills, editing existing skills, or verifying skills work before deployment
database-design
Database design principles and decision-making. Schema design, indexing strategy, ORM selection, serverless databases.
doc-coauthoring
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.
security-review
Use this skill when adding authentication, handling user input, working with secrets, creating API endpoints, or implementing payment/sensitive features. Provides comprehensive security checklist and patterns.
backend-patterns
Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.
behavioral-modes
AI operational modes (brainstorm, implement, debug, review, teach, ship, orchestrate). Use to adapt behavior based on task type.
brand-guidelines
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.
frontend-patterns
Frontend development patterns for React, Next.js, state management, performance optimization, and UI best practices.
slack-gif-creator
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."
subagent-driven-development
Use when executing implementation plans with independent tasks in the current session
dispatching-parallel-agents
Use when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies
api-security-best-practices
Implement secure API design patterns including authentication, authorization, input validation, rate limiting, and protection against common API vulnerabilities
api-documentation-generator
Generate comprehensive, developer-friendly API documentation from code, including endpoints, parameters, examples, and best practices
evals
Run and create evals for testing agent behavior. Use when the user wants to create or run an eval.
git-collaboration
Collaboration workflows for team-based Git development. Covers pull request workflows, merge vs rebase strategies, conflict resolution, code review practices, and branch protection. Helps AI agents follow team conventions and collaborate effectively.
git-commits
Best practices for creating high-quality Git commits. Covers commit message conventions (Conventional Commits), atomic commits, staging strategies, and when to amend vs create new commits. Helps AI agents generate clean, meaningful commit history.
git-recovery
Safety practices and recovery techniques for Git. Covers reflog usage, reset vs revert strategies, recovering lost commits, undoing mistakes, and preventing data loss. Helps AI agents safely navigate Git operations and recover from errors.
modern-git
Modern Git command best practices for AI agents. Use modern, purposeful commands introduced in Git 2.23+ instead of legacy multi-purpose commands. Teaches when to use `git switch` (branch operations), `git restore` (file operations), and other safer alternatives to improve clarity and reduce errors.
simulator-screenshot
Capture screenshots from iOS Simulator or Android Emulator using the bundled simulator-screenshot.sh script. Use when asked to take simulator/emulator screenshots, list available devices, select a specific simulator or emulator by ID/name, or return JSON output for automation.
agent-skills
Use this when: (1) Creating a new project-specific skill to document project patterns, (2) Improving or updating an existing project skill, (3) Writing skill descriptions that will trigger other agents, (4) Organizing skill content for progressive disclosure, or (5) Learning what project-specific skills exist in .claude/skills/. Ensures skills follow project conventions and provide effective progressive disclosure.
discord
Use this skill to send a message over Discord to the operator
jsr
Create and maintain JSR (JavaScript Registry) packages. Use this whenever the user wants to publish a package to JSR, set up a new JSR project, configure exports, write documentation, or troubleshoot JSR publishing.
packlets
Learn the rules of packlets for managing a JavaScript/TypeScript project. Use this skill whenever a user mentions packlets or when working in a project with packlets (src/packlets) directory.
pdd
Skills for Puzzle Driven Development (PDD). Refer to this skill when a project uses PDD or the operator mentions PDD or puzzle-driven development. Use this skill when: (1) Breaking a large feature into incremental deliverables, (2) Writing @todo stub comments to mark unimplemented code, (3) Picking up an existing @todo puzzle to implement, (4) Deciding whether to wrap up a task with a stub or keep working.
playwright-testing
Playwright testing. Use this skill to write and run automated tests for web applications using Playwright.
tmux
Use this skill to run background processes or long running processes using tmux.
wait-for-ci
Use this skill to wait for checks on GitHub Actions to finish on the current pull request
continuity-tracking
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dialogue-craft
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format-export
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fountain-syntax
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glossary-reference
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logline
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page-estimation
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