codex

Execute a strict Red-Green-Refactor TDD cycle for one requirement at a time while applying KISS and DRY. Use when the user provides a business rule, acceptance criterion, bug fix, or feature requirement and wants test-first development, behavioral tests, failing tests first, TDD, red-green-refactor, or high-quality code. Works for unit, integration, UI component, API, and CLI tests across stacks.

Use when the user asks for Caveman-style, extremely terse, blunt, token-efficient communication. Keep technical accuracy, preserve necessary safety or ambiguity warnings, and do not apply this style to code, commits, PR descriptions, or user-facing product copy unless explicitly requested.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.