This skill provides comprehensive guidance for implementing Stripe payment processing in web applications. It covers one-time payments, subscription billing, webhook handling, customer management, and refund processing with PCI-compliant patterns.

A comprehensive guide for implementing JavaScript and TypeScript testing strategies. Covers unit testing, integration testing, mocking patterns, React component testing with Testing Library, test fixtures, and best practices for test-driven development using Jest and Vitest.

This skill guides developers through migrating legacy AngularJS (1.x) applications to modern Angular (2+). It covers hybrid app setup for running both frameworks side-by-side, component and service conversion patterns, dependency injection changes, routing migration, and forms modernization with practical code examples.

This skill provides comprehensive guidance for writing production-grade Bash scripts using defensive programming patterns. It covers strict mode settings, error trapping, safe variable handling, structured logging, and idempotent script design to help developers create reliable shell scripts for CI/CD pipelines, system administration, and automation tasks.

A comprehensive reference skill for designing microservices architectures. It covers service decomposition strategies, synchronous and asynchronous communication patterns, distributed data management with sagas, and resilience patterns like circuit breakers. All content is educational documentation with Python code examples.

A comprehensive guide for writing unit tests for shell scripts using Bats (Bash Automated Testing System). Covers test structure, assertions, mocking, fixtures, CI/CD integration, and best practices for production-grade shell testing.

This skill provides comprehensive guidance for implementing GitOps workflows using ArgoCD and Flux CD. It covers installation, repository structure, sync policies, progressive delivery strategies (canary and blue-green deployments), and secret management best practices for automated Kubernetes deployments.

This skill provides production-ready Terraform module patterns and templates for AWS, Azure, and GCP infrastructure. It includes standardized module structures, VPC/networking examples, RDS database modules, and Terratest integration for testing infrastructure code.

This skill provides comprehensive guidance for setting up and configuring ShellCheck, a static analysis tool for shell scripts. It covers installation, configuration files (.shellcheckrc), common error codes and fixes, CI/CD integration patterns, and best practices for maintaining shell script quality.

Code Review Excellence is a comprehensive guide for conducting effective code reviews. It provides detailed methodologies for reviewing pull requests including checklists for security, performance, and testing, along with templates for feedback and techniques for giving constructive criticism while maintaining team morale.

This skill provides comprehensive guidance for creating distributable Python packages. It covers project structure patterns, pyproject.toml configuration, CLI tool creation with Click or argparse, building wheels and source distributions, and publishing to PyPI with proper versioning and CI/CD automation.

A comprehensive guide for integrating PayPal payments into applications. Covers Express Checkout with Smart Payment Buttons, IPN (Instant Payment Notification) webhook handling, recurring billing/subscriptions, and refund workflows with Python and JavaScript examples.

A comprehensive guide to error handling patterns across Python, TypeScript, Rust, and Go. Covers exception hierarchies, Result types, circuit breakers, retry logic, and graceful degradation strategies for building resilient applications.

A comprehensive reference skill for implementing memory-safe programming patterns including RAII, ownership models, smart pointers, and resource management. Covers best practices in Rust, C++, and C with debugging tool recommendations.

A comprehensive reference guide for optimizing Apache Spark jobs. Covers partitioning strategies, join optimization (broadcast, sort-merge, bucket joins), caching patterns, memory configuration, shuffle reduction techniques, and data format optimization with practical PySpark code examples.

A comprehensive guide for selecting and optimizing embedding models for vector search and RAG applications. Provides code templates for Voyage AI, OpenAI, and local embedding models, along with chunking strategies, domain-specific pipelines, and quality evaluation methods.

This skill helps teams create and maintain Architecture Decision Records (ADRs) - structured documents that capture the context, rationale, and consequences of significant technical decisions. It provides multiple templates (MADR, lightweight, Y-statement, deprecation, RFC-style), directory structure recommendations, review checklists, and integration with adr-tools CLI.

A comprehensive documentation skill for configuring Istio traffic management in Kubernetes service mesh deployments. Provides ready-to-use YAML templates for routing, canary deployments, circuit breakers, retries, traffic mirroring, fault injection, and ingress gateways, along with debugging commands and best practices.

A comprehensive reference guide for dbt (data build tool) analytics engineering. It covers model organization using the medallion architecture (staging, intermediate, marts layers), testing strategies, documentation practices, incremental model patterns, and common dbt commands. Ideal for data engineers building transformation pipelines.

This skill provides comprehensive guidance for implementing observability in service mesh environments like Istio and Linkerd. It includes ready-to-use YAML templates for Prometheus, Jaeger, Grafana, and OpenTelemetry, along with PromQL queries for monitoring golden signals (latency, traffic, errors, saturation) and alerting rules for production deployments.

A comprehensive reference guide for calculating portfolio risk metrics. Provides Python code patterns for Value at Risk (VaR), Conditional VaR, Sharpe ratio, Sortino ratio, maximum drawdown, and other risk measurements used in portfolio management and risk monitoring systems.

This skill helps developers create and maintain OpenAPI 3.1 specifications for RESTful APIs. It provides comprehensive templates for design-first and code-first approaches, including Python/FastAPI and TypeScript/tsoa examples, along with validation tooling configuration and SDK generation commands.

This skill provides production-ready patterns and configuration templates for setting up and optimizing Nx monorepo workspaces. It covers workspace architecture, project boundaries, CI caching, custom generators, and module boundary enforcement with ESLint.

A comprehensive reference skill for implementing Linkerd service mesh in Kubernetes. It provides installation guides, YAML templates for traffic policies, mTLS configuration, canary deployments, and multi-cluster setups, along with monitoring and debugging commands.

A comprehensive TypeScript reference skill that teaches advanced type system concepts including generics, conditional types, mapped types, template literal types, and utility types. It provides code examples and best practices for building type-safe applications without executing any code.

This skill provides comprehensive documentation and best practices for building production MLOps pipelines. It covers the full ML lifecycle including data preparation, model training, validation, and deployment strategies with guidance on using orchestration tools like Airflow, Dagster, and Kubeflow.

A comprehensive guide to end-to-end testing with Playwright and Cypress frameworks. It teaches patterns like Page Object Model, test fixtures, network mocking, visual regression testing, accessibility testing, and debugging strategies for building reliable and maintainable test suites.

A comprehensive reference skill for designing multi-stage CI/CD pipelines. It covers deployment strategies (rolling, blue-green, canary, feature flags), approval gate patterns across different CI platforms, rollback automation, and pipeline monitoring best practices.

A comprehensive guide for designing REST and GraphQL APIs with best practices. Includes production-ready FastAPI templates, GraphQL schema patterns, pagination strategies, error handling conventions, and detailed checklists for pre-implementation review.

This skill provides comprehensive guidance for creating, organizing, and managing Helm charts for Kubernetes application packaging. It includes step-by-step workflows for chart structure, templating patterns, multi-environment configuration, and a validation script to ensure chart quality and security best practices.