Open a whiteboard of the developer's change in their browser, with five questions pinned to its parts (why this way, a malicious actor, the data structure, where it fails, how you know), and let them defend it there. Use for /grip-whiteboard, "whiteboard this change", "let me defend this diff".
Install
npx skills add guilyx/grip --skill grip-whiteboardnpx skills add guilyx/grip --skill grip-whiteboard -a claude-code -gnpx skills add guilyx/grip --skill grip-whiteboard -a codex -ggemini skills install https://github.com/guilyx/grip.git --path skills/grip-whiteboardgh skill install guilyx/grip grip-whiteboardgit clone --depth 1 https://github.com/guilyx/grip /tmp/guilyx__grip
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/guilyx__grip/skills/grip-whiteboard ~/.claude/skills/grip-whiteboard # Claude Code
cp -R /tmp/guilyx__grip/skills/grip-whiteboard ~/.agents/skills/grip-whiteboard # Codex, Cursor, Gemini CLI, Copilot, OpenCode