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

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

Expert guidelines for SciPy development, focusing on scientific computing, optimization, signal processing, and statistical analysis.

Transform prompts by adding what Claude needs to succeed.

Comprehensive guide to securing APIs through authentication, authorization, input validation, rate limiting, and vulnerability protection. \n \n Covers five core security areas: JWT/OAuth authentication, role-based access control, input validation with parameterized queries, rate limiting with Redis, and DDoS protection via security headers \n Includes practical code examples for token generation, refresh flows, SQL injection prevention, XSS sanitization, and tiered rate limiting by user tier \n

Comprehensive testing guidance for Vue.js projects covering unit, component, and end-to-end testing. \n \n Addresses 11 common testing challenges including async handling, composable testing, Pinia store setup, Suspense components, and Teleport queries \n Recommends Vitest for unit and component testing, Playwright for end-to-end testing, and Vue Test Utils for component interaction \n Covers testing patterns like black-box component approaches, snapshot test pitfalls, and browser vs. Node.js ru

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.

TypeScript patterns for type-first development, making illegal states unrepresentable, and exhaustive handling. \n \n Use discriminated unions, branded types, and const assertions to encode business rules in the type system and prevent invalid states at compile time \n Validate at system boundaries with Zod schemas as single source of truth; infer TypeScript types automatically to keep types and validation in sync \n Enforce exhaustive handling with never checks in switch statements and default

Comprehensive best practices guide for Shopware 6.6+ development, designed for AI agents and LLMs helping agency developers. Contains 77 rules across 22 categories, prioritized by impact to guide automated refactoring and code generation.

Production-ready Convex patterns for function organization, validation, query optimization, TypeScript safety, and error handling. \n \n Covers five core areas: function organization by domain, argument and return type validation, indexed query patterns, ConvexError handling, and write conflict avoidance through idempotent mutations \n Enforces code quality via @convex-dev/eslint-plugin with four rules covering function syntax, validators, table IDs, and runtime imports \n Includes complete CRUD