If you're building payments, ledgers, or anything that touches money, this skill keeps you from making expensive mistakes. It covers double-entry accounting, high-precision decimal math (so you don't lose pennies to floating point errors), payment processing patterns, and compliance requirements like PCI-DSS. The focus on audit trails and reconciliation systems is especially practical. With 149 installs and active maintenance, it's clearly solving real problems for fintech teams. Worth having in your toolkit if you're integrating Stripe, Plaid, or building financial infrastructure where correctness isn't optional.
npx skills add https://github.com/404kidwiz/claude-supercode-skills --skill fintech-engineer