Use before building anything from a vague request — a feature, an app, an agent, an automation, a page. Trigger when the user says "build me X" without specifics, when a brief could be read two ways, or when the user asks to be challenged, interrogated, or pushed on requirements before code gets written.
Install
npx skills add OneWave-AI/claude-skills --skill grill-the-briefnpx skills add OneWave-AI/claude-skills --skill grill-the-brief -a claude-code -gnpx skills add OneWave-AI/claude-skills --skill grill-the-brief -a codex -ggemini skills install https://github.com/OneWave-AI/claude-skills.git --path grill-the-briefgh skill install OneWave-AI/claude-skills grill-the-briefgit clone --depth 1 https://github.com/OneWave-AI/claude-skills /tmp/OneWave-AI__claude-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/OneWave-AI__claude-skills/grill-the-brief ~/.claude/skills/grill-the-brief # Claude Code
cp -R /tmp/OneWave-AI__claude-skills/grill-the-brief ~/.agents/skills/grill-the-brief # Codex, Cursor, Gemini CLI, Copilot, OpenCode