fastify
Production Fastify (TypeScript) patterns: schema validation, plugins, typed routes, error handling, security hardening, logging, testing with inject, and graceful shutdown
nodejs-backend-typescript
Node.js backend development with TypeScript, Express/Fastify servers, routing, middleware, and database integration
tanstack-query
TanStack Query (React Query) for asynchronous server-state management with automatic caching, background refetching, optimistic updates, and pagination in React applications.
zustand
Minimal, unopinionated state management library for React with simple hook-based API, no providers, and minimal boilerplate for global state without Redux complexity.
jest-typescript
Jest with TypeScript - Industry standard testing framework with 70% market share, mature ecosystem, React Testing Library integration
vitest
Vitest - Modern TypeScript testing framework with Vite-native performance, ESM support, and TypeScript-first design
zod
TypeScript-first schema validation library with static type inference for form validation, API validation, and runtime type checking with compile-time types.
daisyui
Tailwind CSS component library providing semantic class names for 50+ components with built-in themes, dark mode, and customization for rapid UI development.
headlessui
Headless UI - Unstyled, fully accessible UI components for React and Vue with built-in ARIA patterns
shadcn-ui
shadcn/ui component library for React with Tailwind CSS - copy-paste accessible components with full code ownership
tailwind-css
Tailwind CSS utility-first framework for rapid UI development with responsive design and dark mode
graphql
GraphQL query language and runtime for APIs enabling clients to request exactly the data they need with strongly-typed schemas and single endpoint architecture.
dependency-audit
Dependency audit and cleanup workflow for maintaining healthy project dependencies. Use for regular maintenance, security updates, and removing unused packages.
emergency-release-workflow
Emergency release workflow for critical bug fixes and security patches. Use when production issues require fast-track deployment.
docker
Docker containerization for packaging applications with dependencies into isolated, portable units ensuring consistency across development, testing, and production environments.
github-actions
GitHub Actions CI/CD workflows for automating build, test, and deployment
homebrew-formula-maintenance
Homebrew formula maintenance workflows for Python CLIs and taps, including version bumps, SHA/resource updates, testing, audits, and releases.
media-transcoding
FFmpeg-based media transcoding workflows with preset-driven conversions, batch processing, and safe backups for web/mobile/archive outputs.
pr-quality-checklist
PR quality checklist for ensuring comprehensive, well-documented pull requests. Use before submitting PRs to improve review efficiency and code quality.
api-security-review
API security checklist for reviewing endpoints before deployment. Use when creating or modifying API routes to ensure proper authentication, authorization, and input validation.
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
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