Writing Skills

Overview

Writing skills IS Test-Driven Development applied to process documentation.

You write test cases (pressure scenarios with subagents), watch them fail (baseline behavior), write the skill (documentation), watch tests pass (agents comply), and refactor (close loopholes).

Core principle: If you didn't watch an agent fail without the skill, you don't know if the skill teaches the right thing.

Personal skills live in agent-specific directories: ~/.claude/skills for Claude Code, ~/.codex/skills for Codex

REQUIRED BACKGROUND: You MUST understand superpowers:test-driven-development before using this skill.

When to Use