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31 Laravel 13 conventions and best practices across architecture, Eloquent, controllers, validation, security, and API design. \n \n Organized into 7 rule categories by priority, from critical architecture and database patterns to medium-impact performance and API design guidance \n Covers essential patterns including service classes, form requests, Eloquent models, migrations, eager loading, and event-driven architecture \n Includes 31 specific rules with prefixes (e.g., arch-service-classes ,

Comprehensive guidance for building Fastify Node.js backends with TypeScript, covering routes, plugins, validation, and production deployment. \n \n Covers 16+ core topics including plugins, route organization, JSON Schema validation, error handling, hooks, authentication, testing, logging with Pino, and TypeScript integration via strip types \n Includes recommended reading paths for common scenarios: new projects, adding authentication, performance optimization, testing setup, and production de

51 rules for writing clean, type-safe, modern PHP 8.x code aligned with PSR standards and SOLID principles. \n \n Covers 7 rule categories: type system, modern PHP features (8.0–8.5), PSR standards, SOLID principles, error handling, performance, and security \n Version-aware guidance that detects PHP version from composer.json and runtime, recommending only features available in the target version \n Organized by priority: type safety and security are critical; modern features and SOLID principl

MySQL development best practices for schema design, query optimization, and database administration. \n \n Covers schema design with InnoDB as default engine, appropriate data types (DECIMAL for financial data, utf8mb4 charset), and primary key strategies including AUTO_INCREMENT and UUID storage \n Indexing strategies including B-tree, FULLTEXT, and covering indexes with guidelines on column selectivity and composite index ordering \n Query optimization using EXPLAIN analysis, prepared statemen

React patterns for hooks, effects, refs, and component design with escape hatch guidance. \n \n Effects synchronize with external systems only (WebSocket, third-party libraries, browser APIs); most component logic should avoid Effects entirely \n Common anti-patterns: derived state, expensive calculations, prop-change resets, and event handling all belong outside Effects—use render calculations, useMemo, key props, and event handlers instead \n Effect dependencies must never be suppressed; use u

A senior-level guide for building production-ready React Single Page Applications (SPAs) with Vite.

Postgres performance optimization rules across 8 priority categories, from query tuning to advanced features. \n \n Organized into 8 rule categories prioritized by impact: query performance and connection management (critical), security and RLS, schema design, concurrency, data access patterns, monitoring, and advanced features \n Each rule includes detailed explanations, incorrect vs. correct SQL examples, EXPLAIN output analysis, and performance metrics to guide optimization decisions \n Cover

Best practices for full-stack React development with TanStack Start, covering server functions, middleware, SSR, and authentication. \n \n Organizes 31 rules across 10 categories (server functions, security, middleware, authentication, SSR, error handling, and more) with priority levels to guide implementation order \n Covers critical patterns for server-side logic, input validation, secure session management, and client-server boundary handling \n Includes middleware composition, selective SSR

Node.js architecture and framework selection guidance based on deployment context and project requirements. \n \n Framework decision tree covers Hono (edge/serverless), Fastify (performance), NestJS (enterprise), and Express (legacy), with selection criteria tied to cold start time, ecosystem size, and team experience \n Covers layered architecture principles (controller, service, repository), async patterns (async/await vs Promise.all/allSettled), and centralized error handling with appropriate

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