software-patterns
Decision framework for architectural patterns including DI, SOA, Repository, Domain Events, Circuit Breaker, and Anti-Corruption Layer. Use when designing systems, choosing patterns, or reviewing architecture.
Brainstorming Ideas Into Designs
Interactive idea refinement using Socratic method to develop fully-formed designs
Dispatching Parallel Agents
Use multiple Claude agents to investigate and fix independent problems concurrently
git-workflow
Essential Git patterns for effective version control, eliminating redundant Git guidance per agent.
git-worktrees
Use git worktrees for parallel development on multiple branches simultaneously
Requesting Code Review
Dispatch code-reviewer subagent to review implementation against plan or requirements before proceeding
stacked-prs
Create and manage stacked (dependent) pull requests for complex features
Writing Plans
Create detailed implementation plans with bite-sized tasks for engineers with zero codebase context
database-migration
Safe patterns for evolving database schemas in production with decision trees and troubleshooting guidance.
json-data-handling
Working effectively with JSON data structures.
reporting-pipelines
Reporting pipelines for CSV/JSON/Markdown exports with timestamped outputs, summaries, and post-processing.
sec-edgar-pipeline
SEC EDGAR extraction pipeline: setup, filing discovery by CIK, recipe-driven extraction, and report generation.
xlsx
Working with Excel files programmatically.
Root Cause Tracing
Systematically trace bugs backward through call stack to find original trigger
systematic-debugging
Systematic debugging methodology emphasizing root cause analysis over quick fixes
verification-before-completion
Run verification commands and confirm output before claiming success
env-manager
Environment variable validation, security scanning, and management for Next.js, Vite, React, and Node.js applications
kubernetes
Kubernetes operations playbook for deploying services: core objects, probes, resource sizing, safe rollouts, and fast kubectl debugging
terraform
Terraform infrastructure-as-code workflow patterns: state and environments, module design, safe plan/apply, drift control, and CI guardrails
artifacts-builder
Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui)
internal-comms-3p-updates
Framework for writing concise 3P (Progress, Plans, Problems) team updates for executives and stakeholders
mcp-builder
MCP (Model Context Protocol) server build and evaluation guide, including local conventions for tool surfaces, config, and testing
skill-creator
Guide for creating effective skills
opentelemetry
OpenTelemetry observability patterns: traces, metrics, logs, context propagation, OTLP export, Collector pipelines, and troubleshooting
threat-modeling
Threat modeling workflow for software systems: scope, data flow diagrams, STRIDE analysis, risk scoring, and turning mitigations into backlog and tests
Condition-Based Waiting
Replace arbitrary timeouts with condition polling for reliable async tests
test-driven-development
Comprehensive TDD patterns and practices for all programming languages, eliminating redundant testing guidance per agent.
test-quality-inspector
Test quality inspection framework for reviewing test coverage, identifying gaps, and ensuring comprehensive validation
Testing Anti-Patterns
Never test mock behavior. Never add test-only methods to production classes. Understand dependencies before mocking. Language-agnostic principles with TypeScript/Jest and Python/pytest examples.
webapp-testing-patterns
Comprehensive web application testing patterns with Playwright selectors, wait strategies, and best practices
bug-fix
Systematic workflow for verifying bug fixes to ensure quality and prevent regres...
pre-merge
Comprehensive verification workflow before merging changes to production.
screenshot
Visual verification workflow for UI changes to accelerate code review and catch ...
api-documentation
Best practices for documenting APIs and code interfaces, eliminating redundant documentation guidance per agent.
web-performance-optimization
Optimize web performance using Core Web Vitals, modern patterns (View Transitions, Speculation Rules), and framework-specific techniques
clickhouse-best-practices
MUST USE when reviewing ClickHouse schemas, queries, or configurations. Contains 28 rules that MUST be checked before providing recommendations. Always read relevant rule files and cite specific rules in responses.
accessibility-expert
WCAG 2.1/2.2 compliance, WAI-ARIA implementation, screen reader optimization, keyboard navigation, and accessibility testing expert. Use PROACTIVELY for accessibility violations, ARIA errors, keyboard navigation issues, screen reader compatibility problems, or accessibility testing automation needs.
ai-sdk-expert
Expert in Vercel AI SDK v5 handling streaming, model integration, tool calling, hooks, state management, edge runtime, prompt engineering, and production patterns. Use PROACTIVELY for any AI SDK implementation, streaming issues, provider integration, or AI application architecture. Detects project setup and adapts approach.
auth-expert
Authentication and authorization expert specializing in JWT, OAuth 2.0, session management, RBAC, password security. Use for auth implementation, token management, or security issues.
cli-expert
Expert in building npm package CLIs with Unix philosophy, automatic project root detection, argument parsing, interactive/non-interactive modes, and CLI library ecosystems. Use PROACTIVELY for CLI tool development, npm package creation, command-line interface design, and Unix-style tool implementation.
code-review
Provides comprehensive code review covering 6 focused aspects - architecture & design, code quality, security & dependencies, performance & scalability, testing coverage, and documentation & API design. Use this skill for deep analysis with actionable feedback after significant code changes.
css-styling-expert
CSS architecture and styling expert with deep knowledge of modern CSS features, responsive design, CSS-in-JS optimization, performance, accessibility, and design systems. Use PROACTIVELY for CSS layout issues, styling architecture, responsive design problems, CSS-in-JS performance, theme implementation, cross-browser compatibility, and design system development. If a specialized expert is better fit, I will recommend switching and stop.
database-expert
Database performance optimization, schema design, query analysis, and connection management across PostgreSQL, MySQL, MongoDB, and SQLite with ORM integration. Use this skill for queries, indexes, connection pooling, transactions, and database architecture decisions.
devops-expert
DevOps and Infrastructure expert with comprehensive knowledge of CI/CD pipelines, containerization, orchestration, infrastructure as code, monitoring, security, and performance optimization. Use PROACTIVELY for any DevOps, deployment, infrastructure, or operational issues. If a specialized expert is a better fit, I will recommend switching and stop.
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.
documentation-expert
Expert in documentation structure, cohesion, flow, audience targeting, and information architecture. Use PROACTIVELY for documentation quality issues, content organization, duplication, navigation problems, or readability concerns. Detects documentation anti-patterns and optimizes for user experience.
git-expert
Git expert with deep knowledge of merge conflicts, branching strategies, repository recovery, performance optimization, and security patterns. Use PROACTIVELY for any Git workflow issues including complex merge conflicts, history rewriting, collaboration patterns, and repository management. If a specialized expert is a better fit, I will recommend switching and stop.
github-actions-expert
GitHub Actions CI/CD pipeline optimization, workflow automation, custom actions development, and security best practices for scalable software delivery
jest-testing-expert
Expert in Jest testing framework, advanced mocking strategies, snapshot testing, async patterns, TypeScript integration, and performance optimization
mongodb-expert
MongoDB document modeling, aggregation pipeline optimization, sharding strategies, replica set configuration, connection pool management, and indexing patterns. Use this skill for MongoDB-specific issues, NoSQL performance optimization, and schema design.
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