Can this skill help with SaaS plan upgrades?

Yes, it includes specialized proration calculators that handle credits for unused time on old plans and apply appropriate charges for new plans mid-cycle.

How does the dunning management work?

It implements a systematic recovery process that includes retry schedules, customer email notifications, and grace periods before a subscription is canceled.

Does it support international taxes like VAT and GST?

The skill provides a tax calculation framework with pre-defined rates for various jurisdictions including the US, UK, Germany, France, and Australia.

Is this specific to any payment processor?

While it includes examples for Stripe, the core logic for billing cycles and subscription states is provider-agnostic and can be adapted to any payment gateway.

Billing Automation

Name: Billing Automation
Author: HermeticOrmus

byHermeticOrmus

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전자상거래 솔루션

Implements comprehensive automated billing systems for recurring payments, subscription lifecycles, and failed payment recovery.

The Billing Automation skill provides specialized patterns and logic for building robust financial infrastructures within Claude Code. It enables developers to handle complex subscription states, automate invoice generation, and manage the entire dunning process for failed payments. With pre-built logic for proration during plan changes and multi-jurisdictional tax calculations (VAT, GST, Sales Tax), this skill is essential for developers building SaaS platforms, subscription-based games, or usage-based service models that require high-reliability payment processing.

주요 기능

01Multi-regional tax calculation for US Sales Tax, VAT, and GST

02Full subscription lifecycle management from trial to cancellation

03Proration logic for mid-cycle plan upgrades and seat changes

044 GitHub stars

05Usage-based and recurring billing engine implementation patterns

06Automated dunning workflows with retry schedules and notifications

사용 사례

01Developing a SaaS backend with automated recurring monthly billing

02Implementing a seat-based pricing model with prorated charges

03Creating a payment recovery system to reduce churn from failed credit cards

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add hermeticormus/claude-code-game-development billing-automation

For use in Claude.ai and ChatGPT

주요 기능

01Multi-regional tax calculation for US Sales Tax, VAT, and GST

02Full subscription lifecycle management from trial to cancellation

03Proration logic for mid-cycle plan upgrades and seat changes

044 GitHub stars

05Usage-based and recurring billing engine implementation patterns

06Automated dunning workflows with retry schedules and notifications

사용 사례

01Developing a SaaS backend with automated recurring monthly billing

02Implementing a seat-based pricing model with prorated charges

03Creating a payment recovery system to reduce churn from failed credit cards

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add hermeticormus/claude-code-game-development billing-automation

For use in Claude.ai and ChatGPT