Stress-test an architecture proposal, plan, or technical idea. Invokes the devils-advocate agent to find weaknesses before you commit.
Install
npx skills add langwatch/langwatch --skill challengenpx skills add langwatch/langwatch --skill challenge -a claude-code -gnpx skills add langwatch/langwatch --skill challenge -a codex -ggemini skills install https://github.com/langwatch/langwatch.git --path .claude/skills/challengegh skill install langwatch/langwatch challengegit clone --depth 1 https://github.com/langwatch/langwatch /tmp/langwatch__langwatch
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/langwatch__langwatch/.claude/skills/challenge ~/.claude/skills/challenge # Claude Code
cp -R /tmp/langwatch__langwatch/.claude/skills/challenge ~/.agents/skills/challenge # Codex, Cursor, Gemini CLI, Copilot, OpenCode