practices▌

Apply these security principles when developing backend services, microservices, and any code handling sensitive data or external inputs.

Performance optimization and code style patterns for JavaScript and TypeScript code. Contains 17 rules focused on reducing unnecessary computation, optimizing data structures, and maintaining consistent conventions.

NgRx state management rules for global state with actions, reducers, effects, and selectors. Use with the core angular-best-practices skill for comprehensive Angular coverage.

Comprehensive performance optimization guide for React and Next.js applications, maintained by Vercel. Contains 69 rules across 8 categories, prioritized by impact to guide automated refactoring and code generation.

Guidelines for building scalable, secure, and performant applications on Harper. These practices cover everything from initial schema design to advanced deployment strategies.

Expert guidelines for Matplotlib development, focusing on data visualization, plotting, and creating publication-quality figures.

You are an expert in styled-components, CSS-in-JS patterns, and React component styling.

Comprehensive performance optimization guide for Postgres, maintained by Supabase. Contains rules across 8 categories, prioritized by impact to guide automated query optimization and schema design.

Follows type-first, functional, and error handling patterns from CLAUDE.md. This skill covers language-specific idioms only.

Comprehensive performance optimization and best practices for Next.js applications, designed for AI agents and LLMs working with Next.js code.