Design

Use when essential PHP security patterns including input validation, SQL injection prevention, XSS protection, CSRF tokens, password hashing, secure session management, and defense-in-depth strategies for building secure PHP applications.

Use when optimizing Tailwind CSS for production, reducing bundle size, and improving performance. Covers PurgeCSS, JIT mode, and build optimization.

Use when implementing iOS 17+ privacy manifests for CocoaPods libraries. Covers PrivacyInfo.xcprivacy file creation, required reasons API declarations, and proper resource bundle integration for App Store compliance.

Use when creating or modifying Storybook stories for components. Ensures stories follow CSF3 format, properly showcase component variations, and build successfully.

Use when designing monorepo structure, organizing packages, or migrating to monorepo architecture with architectural patterns for managing dependencies and scalable workspace configurations.

Use when applying Phoenix Framework best practices including context design, controller patterns, and application architecture. Use when building Phoenix applications.

Use when Django REST Framework for building APIs with serializers, viewsets, and authentication. Use when creating RESTful APIs.

Use when creating or modifying CocoaPods podspec files. Covers required attributes, file patterns, dependencies, and platform specifications for iOS, macOS, tvOS, watchOS, and visionOS projects.

Use when building Angular 16+ applications requiring fine-grained reactive state management and zone-less change detection.

Use when Django Class-Based Views for building modular, reusable views. Use when creating CRUD operations and complex view logic.

Use when lua tables as the universal data structure including arrays, dictionaries, objects, metatables, object-oriented patterns, data structures, and advanced table manipulation for building flexible, efficient Lua applications.

Use when nestJS dependency injection with providers, modules, and decorators. Use when building modular NestJS applications.

Use when designing system architecture, making high-level technical decisions, or planning major system changes. Focuses on structure, patterns, and long-term strategy.

Use when objective-C protocols for defining interfaces and categories for extending classes, including formal protocols, optional methods, class extensions, and patterns for modular, reusable code design.

Use when swift's modern concurrency model including async/await, actors, task groups, structured concurrency, and async sequences for building safe, performant concurrent code without data races or callback pyramids.

Use when writing or creating new Standard Operating Procedures (SOPs) for AI agents. Covers effective SOP writing, clarity principles, and actionable instruction design.

Use when gleam's type system including algebraic data types, custom types, pattern matching, generic types, type inference, opaque types, exhaustive checking, and functional error handling for building type-safe Erlang VM applications.

Use when pylint checkers including built-in checkers, custom checkers, and checker development.

Use when setting up monorepo tooling, optimizing builds, or migrating between tools with Turborepo, Nx, Bazel, Lerna for efficient task running, caching, and code generation.

Use when Vue 3 Composition API with reactive refs, computed, and composables. Use when building modern Vue 3 applications.