domain-fintech

Name: domain-fintech
Availability: InStock
Author: Actionbook

Guide Rust apps to enforce fintech domain constraints with Arc, rust_decimal, and event sourcing.

1.4k|110|Updated Jan 17, 2026

Search Tags:#Rust #domain-driven-design #fintech #immutability #audit-trail #event-sourcing #decimal-math

Ready to run

npx skills add https://github.com/actionbook/rust-skills --skill domain-fintech

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: domain-fintech
Source: https://github.com/actionbook/rust-skills/tree/main/skills/domain-fintech
Command: npx skills add https://github.com/actionbook/rust-skills --skill domain-fintech

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides a domain-driven approach to FinTech Rust applications, ensuring immutable audit trails, precise decimal arithmetic, and clear transaction boundaries by mapping domain constraints to design patterns in Rust.

Core Features & Use Cases

Domain-first design focusing on auditability, precision, and ownership.
Recommended patterns: Arc for shared immutable data, rust_decimal for money, event sourcing for audit logs, structured logging for compliance.
Use Case: Build a fintech ledger that guarantees deterministic calculations and immutable records across services.

Quick Start

Ask the AI to design a fintech module that uses Arc for sharing, rust_decimal for currency, and event-sourced transactions.

Frequently Asked Questions about domain-fintech

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

FAQPage Schema

How do I enforce an immutable audit trail for financial transactions in Rust?▼

To enforce an immutable audit trail in Rust, apply event sourcing patterns to capture state changes as a sequence of immutable events. This guarantees deterministic replay and compliance for ledger systems.

What is the best way to handle precise decimal arithmetic for currency in Rust?▼

For precise decimal arithmetic in Rust, use the rust_decimal crate to represent currency values. This prevents floating-point rounding errors, ensuring deterministic calculations required by financial services.

When do I need Arc for shared immutable data in a Rust fintech application?▼

You need Arc for shared immutable data in Rust fintech applications when multiple transactions or services require read access to the same shared state without copying, ensuring clear ownership boundaries.

How do I apply domain-driven design to a Rust payments or trading system?▼

Apply domain-driven design to Rust payments or trading systems by mapping domain constraints to design patterns like event sourcing for audit logs and structured logging for compliance, enforcing architectural boundaries.

Does event sourcing work with rust_decimal for building a fintech ledger?▼

Yes, event sourcing works with rust_decimal to build a fintech ledger by storing immutable transaction events containing precise decimal values, guaranteeing both calculation accuracy and auditability across services.

Why use structured logging for compliance in Rust financial services?▼

Use structured logging for compliance in Rust financial services to capture deterministic, queryable transaction metadata. This creates an immutable audit trail that satisfies regulatory requirements and ensures traceability.