1. Software Development

Enforces a development workflow where tests are written before code, ensuring robust and maintainable software through the Red-Green-Refactor cycle.

Provides best practices for writing unit, integration, and async tests in Python using pytest, including mocking and fixtures.

Ensures all tests pass, build succeeds, and requirements are met before marking a task as complete, acting as a quality gate in development workflows.

Prevents common testing anti-patterns like mocking behavior and test-specific code in production, ensuring clean test suites and maintainable code.

Provides cross-language testing strategies for unit, integration, and E2E tests, including infrastructure setup and coverage improvement.

Automates optimal technology stack selection for new projects based on validated requirements, integrated into build pipelines.

Builds modern Python backend APIs and async services using FastAPI, SQLAlchemy, and Pydantic for efficient development.

Enforces data validation at every layer of application execution to prevent failures caused by invalid data, making bugs structurally impossible.

Requires running verification commands and confirming outputs before claiming work completion or fixes as successful.

Offers a four-phase debugging framework (root cause investigation, pattern analysis, hypothesis testing, implementation) to systematically resolve software bugs and unexpected behavior.

Automates feature implementation from specifications using GitHub Spec Kit, ensuring 100% compliance with acceptance criteria and spec completion.

Transforms reverse-engineering documentation into GitHub Spec Kit format, initializing .specify directory and generating specifications for development workflows.

Assists in designing and planning software architecture, including component interactions and system patterns.

Generates visual ASCII diagrams mapping specifications to code files, providing coverage statistics and reverse indexes for validation during development or cleanup.

Automates dependency upgrades and application modernization in brownfield projects while maintaining spec-driven control and improving test coverage.

Builds browser extensions for Chrome and Firefox using Manifest V3, content scripts, and service workers.

Replaces arbitrary timeouts with condition polling to resolve race conditions and timing dependencies in test suites.

Creates frontend UI components and pages from natural language descriptions, accelerating development workflows.

Provides essential testing patterns for writing, configuring, and debugging unit tests in software development projects.

Creates command-line tools with argument parsing, subcommands, and intuitive user interfaces for terminal applications.

Automates test generation and execution upon code changes to ensure quality and catch regressions in the development pipeline.

Builds modern Node.js backends with NestJS, Hono, Drizzle ORM, and TypeScript for APIs and serverless functions.

Generates database schemas from feature descriptions without exposing SQL, enabling efficient data persistence design for backend development.

Conducts route-aware gap analysis: compares specs to implementation in brownfield projects and validates spec completeness with tech stack questions in greenfield projects.