1. Software Development

Enables advanced testing capabilities in Python projects using Pytest features like custom markers, hooks, and coverage configuration.

Generates structured Architecture Decision Records (ADRs) by guiding trade-off analysis and fact-checking for important technical decisions in software development.

Provides Rust dependency management guidelines covering crate selection, feature flags, versioning, and security auditing with cargo-audit and cargo-deny.

Provides comprehensive code reviews for quality, security, performance, and best practices in pull requests and code changes.

Provides error handling patterns using neverthrow for new code and custom Result types for legacy, including retry logic and circuit breakers.

Provides best practices for improving code structure, error handling, and reducing duplication to enhance maintainability and quality.

Manages Claude Code hooks including creation, analysis, configuration, security validation, and debugging across event types.

Provides best practices for writing unit and integration tests, including mocking strategies and coverage goals to ensure code quality.

Applies a four-phase systematic approach to identify, isolate, and resolve software bugs and unexpected behavior efficiently.

Enables advanced TypeScript type system usage including strict mode, generics, and type guards for type-safe development.

Guides safe refactoring of legacy code using RGR (Record, Generate, Refactor) to add characterization tests before modifications.

Provides tools and patterns for implementing asynchronous programming in Python using asyncio, async/await, and concurrent.futures.

Provides tools for developing, testing, and deploying Hono web applications across multiple JavaScript runtimes including Cloudflare Workers, Deno, and Node.js.

Automatically generates OpenAPI/Swagger documentation from TypeScript, Express, and Next.js codebases.

Generates DynamoDB operation patterns including client setup, marshall/unmarshall, CRUD, GSI queries, and batch writes for sender tracking systems.

Provides backend development support for Ruby on Rails 8 and Ruby 3.2, including API development, ActiveRecord, migrations, and RSpec testing.

Auto-generates test environment setup with MSW for API mocking, happy-dom, and Vitest coverage thresholds.

Enables comprehensive test setup with pytest fixtures, conftest files, and parametrization for efficient test management.

Provides structured logging implementation using Pino with environment-aware configuration and context-based child loggers for backend applications.

Provides a reusable pattern for orchestrating multi-step email processing with cost tracking, circuit breakers, and graceful degradation.

Guidelines for optimizing Rust CLI tool performance, covering parallel processing, lazy initialization, and build optimizations.

Scaffolds Chrome extensions with WXT, React, TypeScript, and shadcn-UI for content scripts, background workers, and UI components.

Provides asynchronous pattern implementations for FastAPI to build high-performance APIs handling concurrent requests efficiently.

Provides guidance for selecting between inheritance and composition patterns in object-oriented class design and hierarchy creation.