Diff a specific regulatory change against the indexed policy library. Use when a reg has changed and you need to know which policies it touches and what the gap is, when the user says "diff this reg against our policies", "which policy does this affect", or "gap analysis", or when reg-feed-watcher hands off a material item.
Install
npx skills add anthropics/claude-for-legal --skill policy-diffnpx skills add anthropics/claude-for-legal --skill policy-diff -a claude-code -gnpx skills add anthropics/claude-for-legal --skill policy-diff -a codex -ggemini skills install https://github.com/anthropics/claude-for-legal.git --path regulatory-legal/skills/policy-diffgh skill install anthropics/claude-for-legal policy-diffgit clone --depth 1 https://github.com/anthropics/claude-for-legal /tmp/anthropics__claude-for-legal
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/anthropics__claude-for-legal/regulatory-legal/skills/policy-diff ~/.claude/skills/policy-diff # Claude Code
cp -R /tmp/anthropics__claude-for-legal/regulatory-legal/skills/policy-diff ~/.agents/skills/policy-diff # Codex, Cursor, Gemini CLI, Copilot, OpenCode