Read-only audit of payment and money-movement code, scoped from Stripe Checkout to in-house ledgers. Use when "audit payment system", "double charge / idempotency", "ledger / reconciliation", or "webhook / 3DS / PCI". IAP → audit-monetization-iap.
Install
npx skills add kensaurus/skills --skill audit-payment-systemnpx skills add kensaurus/skills --skill audit-payment-system -a claude-code -gnpx skills add kensaurus/skills --skill audit-payment-system -a codex -ggemini skills install https://github.com/kensaurus/skills.git --path skills/audit-payment-systemgh skill install kensaurus/skills audit-payment-systemgit clone --depth 1 https://github.com/kensaurus/skills /tmp/kensaurus__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/kensaurus__skills/skills/audit-payment-system ~/.claude/skills/audit-payment-system # Claude Code
cp -R /tmp/kensaurus__skills/skills/audit-payment-system ~/.agents/skills/audit-payment-system # Codex, Cursor, Gemini CLI, Copilot, OpenCode