Reusable SKILL.md capabilities that give your agent new expertise — installed into .claude/skills/ and friends.
.claude/skills/
Test-driven development workflow with Red-Green-Refactor cycle across languages
Use when the user asks to run Codex CLI (codex exec, codex resume) or references OpenAI Codex for code analysis, refactoring, or automated editing
Use the @steipete/oracle CLI to bundle a prompt plus the right files and get a second-model review (API or browser) for debugging, refactors, design checks, or cross-validation.