FinTech & Payment Systems
Architects resilient payment gateways, double-entry bookkeeping ledgers, and PCI-DSS compliant financial transaction pipelines.
The FinTech & Payment Systems skill guides Claude to engineer production-ready financial applications with zero tolerance for data corruption. It enforces critical fintech standards including RFC 8935 idempotency keys with distributed Redis locking, strict integer or fixed-point currency math, raw-body HMAC-SHA256 webhook verification, and append-only double-entry bookkeeping ledgers. Whether you are integrating payment gateways like Stripe, PayPal, and VNPay or building immutable audit trails, this skill ensures complete transactional safety and compliance.
Características Principales
01Finite state machine models for robust financial transaction lifecycles
02Cryptographic webhook signature verification with raw byte payloads and replay protection
03Enforced integer and fixed-point decimal money representation avoiding IEEE 754 precision loss
042 GitHub stars
05Append-only double-entry bookkeeping ledger schema and constraints
06RFC 8935 idempotency key middleware with distributed Redis locking
Casos de Uso
01Securing webhook endpoints against replay attacks and unauthorized payload injection
02Building an audit-proof, double-entry accounting ledger system for balance and transaction tracking
03Integrating multi-gateway checkout flows with providers like Stripe, PayPal, ZaloPay, and VNPay