How to keep the UI in sync with agent changes via SSE plus polling fallback.
Idiomatic Rust patterns, ownership, error handling, traits, concurrency, and best practices for building safe, performant applications.
Spring Boot architecture patterns, REST API design, layered services, data access, caching, async processing, and logging.
Thread-safe data persistence in Swift using actors — in-memory cache with file-backed storage, eliminating data races by design.
Protocol-based dependency injection for testable Swift code — mock file system, network, and external APIs using focused protocols and…
Framework (OSS). Set up Tailwind CSS v4 in Expo with react-native-css and NativeWind v5 for universal styling
TypeScript best practices. Use when reading or editing any .ts or .tsx file.
Automate Unreal Engine editor scenes, actors, and renders.
Framework (OSS). Migrate an existing web React app to a native iOS/Android app with Expo. Use when the user wants to turn a website into a…
Framework (OSS). Guide for creating and writing Expo native modules and views using the Expo Modules API (Swift, Kotlin, TypeScript)…
Analyze and fix useEffect anti-patterns in your code
code review feedback quality analysis best practices consistency checking
CometChat Android UIKit v6 troubleshooting — diagnostic table, common issues, and fixes for both Kotlin Views and Compose stacks
Review code following Kent Beck's refactoring philosophy and simple design principles.
Review code changes in crit's multi-file TUI with syntax highlighting and diff markers.
Open crit for review. Routes to code review (multi-file TUI for code changes) or plan/document review (single-file TUI).
Use when working with iOS/macOS Keychain Services (SecItem queries, kSecClass, OSStatus errors), biometric authentication (LAContext, Face…
Multi-stack code formatter. Suggest when: "format", "fmt", "lint", code style issues found, or before committing. Auto-detects…
GitHub PR creation with auto-push and conventional titles.
Use when structuring a FastAPI application, designing dependency injection chains, defining Pydantic v2 schemas, adding JWT…
Use when working with NestJS applications implementing repository pattern, dependency injection, testing strategies, or ESM configuration.