domain-fintech

Build auditable fintech domains with immutable transactions and rust_decimal arithmetic.

Updated Feb 8, 2026
One-click install
npx skills add https://github.com/yumazak/kodo --skill domain-fintech-yumazak
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: domain-fintech
Source: https://github.com/yumazak/kodo/tree/main/.agents/skills/domain-fintech
Command: npx skills add https://github.com/yumazak/kodo --skill domain-fintech-yumazak

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Fintech apps demand immutable audit trails, precise monetary calculations, and strict transaction boundaries. This skill codifies domain design constraints to reduce risk and improve compliance.

Core Features & Use Cases

  • Domain constraints for auditability, immutability, and traceability.
  • Decimal-based currency math using rust_decimal to avoid floating-point errors.
  • Event-sourced transaction patterns and Arc-based shared ownership for thread-safety.
  • Use cases include building auditable payments, ledger entries, and compliant financial modules.

Quick Start

Configure a fintech module that uses immutable transactions, rust_decimal-based arithmetic, and event-sourced audit logging.

Frequently Asked Questions about domain-fintech

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build an immutable audit trail for fintech transactions?

To build an immutable audit trail for fintech transactions, apply event-sourced transaction patterns with Arc-based shared ownership for thread-safe immutability and structured logging for traceability across modules.

Why does floating-point math cause errors in ledger entries and how do I avoid it?

Floating-point math causes rounding errors in ledger entries because binary representations cannot precisely store decimal values. Avoid this by using rust_decimal for currency arithmetic to ensure precise monetary calculations.

What is event-sourced transaction pattern for compliant financial modules?

Event-sourced transaction patterns for compliant financial modules involve storing immutable transaction events as a sequential audit trail. This ensures strict transaction boundaries, domain traceability, and compliance across distributed services.

How to configure thread-safe immutable transactions in Rust fintech apps?

To configure thread-safe immutable transactions in Rust fintech apps, use Arc-based sharing for shared ownership across threads. Combine this with rust_decimal arithmetic and structured logging to maintain auditable concurrency.

Does rust_decimal work with event-sourced domain design for payment processing?

Yes, rust_decimal works with event-sourced domain design for payment processing. It provides precise currency arithmetic while event-sourced patterns maintain the immutable audit trails required for compliant financial modules.

When do I need strict transaction boundaries in financial modules?

You need strict transaction boundaries in financial modules when building auditable payments or ledger entries. These boundaries ensure traceability, enforce domain constraints, and maintain compliance across distributed services.