Can it calculate global taxes?

Yes, it provides logic frameworks for calculating regional sales tax, VAT, and GST based on specific customer jurisdictions like the US, EU, and UK.

What billing models does this skill support?

It supports various models including fixed recurring (monthly/annual), usage-based, per-seat, and tiered subscription models.

Does it handle plan changes?

Yes, it includes specialized logic for calculating prorated charges and credits when customers upgrade or downgrade mid-cycle.

How does it manage failed payments?

The skill provides patterns for dunning management, including retry schedules, grace periods, and automated customer notifications to recover revenue.

Billing Automation

Name: Billing Automation
Author: carloscroc

bycarloscroc

0•

E-commerce Solutions

Automates subscription lifecycles, recurring payment processing, and complex invoicing workflows for SaaS and digital services.

This skill provides Claude with domain-specific knowledge to architect and implement robust automated billing systems. It covers the entire subscription lifecycle, from initial trial management and plan migrations with proration to failed payment recovery through automated dunning logic. By utilizing this skill, developers can reliably handle complex financial operations like multi-jurisdictional tax calculation, usage-based billing, and automated invoice generation, ensuring a professional and scalable financial infrastructure.

Key Features

01Multi-jurisdictional Tax and VAT Calculation

02Automated Dunning & Failed Payment Recovery

03Usage-based and Recurring Billing Cycles

04Subscription Lifecycle Management (Trial to Cancellation)

05Proration Logic for Plan Upgrades and Downgrades

060 GitHub stars

Use Cases

01Automating failed payment retries and customer recovery notifications.

02Implementing per-seat or usage-based billing for cloud services.

03Building a SaaS subscription platform with tiered pricing and trials.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add carloscroc/fitness billing-automation

For use in Claude.ai and ChatGPT

Download Skill